mirror of
https://codeberg.org/forgejo/forgejo.git
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654 lines
20 KiB
Go
Vendored
654 lines
20 KiB
Go
Vendored
// Copyright 2015 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package dialects
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import (
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"context"
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"errors"
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"fmt"
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"net/url"
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"strconv"
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"strings"
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"xorm.io/xorm/core"
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"xorm.io/xorm/schemas"
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)
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var (
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mssqlReservedWords = map[string]bool{
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"ADD": true,
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"EXTERNAL": true,
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"PROCEDURE": true,
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"ALL": true,
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"FETCH": true,
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"PUBLIC": true,
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"ALTER": true,
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"FILE": true,
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"RAISERROR": true,
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"AND": true,
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"FILLFACTOR": true,
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"READ": true,
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"ANY": true,
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"FOR": true,
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"READTEXT": true,
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"AS": true,
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"FOREIGN": true,
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"RECONFIGURE": true,
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"ASC": true,
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"FREETEXT": true,
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"REFERENCES": true,
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"AUTHORIZATION": true,
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"FREETEXTTABLE": true,
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"REPLICATION": true,
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"BACKUP": true,
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"FROM": true,
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"RESTORE": true,
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"BEGIN": true,
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"FULL": true,
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"RESTRICT": true,
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"BETWEEN": true,
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"FUNCTION": true,
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"RETURN": true,
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"BREAK": true,
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"GOTO": true,
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"REVERT": true,
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"BROWSE": true,
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"GRANT": true,
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"REVOKE": true,
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"BULK": true,
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"GROUP": true,
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"RIGHT": true,
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"BY": true,
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"HAVING": true,
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"ROLLBACK": true,
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"CASCADE": true,
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"HOLDLOCK": true,
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"ROWCOUNT": true,
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"CASE": true,
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"IDENTITY": true,
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"ROWGUIDCOL": true,
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"CHECK": true,
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"IDENTITY_INSERT": true,
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"RULE": true,
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"CHECKPOINT": true,
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"IDENTITYCOL": true,
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"SAVE": true,
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"CLOSE": true,
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"IF": true,
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"SCHEMA": true,
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"CLUSTERED": true,
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"IN": true,
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"SECURITYAUDIT": true,
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"COALESCE": true,
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"INDEX": true,
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"SELECT": true,
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"COLLATE": true,
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"INNER": true,
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"SEMANTICKEYPHRASETABLE": true,
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"COLUMN": true,
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"INSERT": true,
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"SEMANTICSIMILARITYDETAILSTABLE": true,
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"COMMIT": true,
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"INTERSECT": true,
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"SEMANTICSIMILARITYTABLE": true,
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"COMPUTE": true,
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"INTO": true,
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"SESSION_USER": true,
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"CONSTRAINT": true,
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"IS": true,
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"SET": true,
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"CONTAINS": true,
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"JOIN": true,
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"SETUSER": true,
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"CONTAINSTABLE": true,
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"KEY": true,
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"SHUTDOWN": true,
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"CONTINUE": true,
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"KILL": true,
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"SOME": true,
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"CONVERT": true,
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"LEFT": true,
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"STATISTICS": true,
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"CREATE": true,
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"LIKE": true,
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"SYSTEM_USER": true,
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"CROSS": true,
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"LINENO": true,
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"TABLE": true,
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"CURRENT": true,
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"LOAD": true,
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"TABLESAMPLE": true,
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"CURRENT_DATE": true,
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"MERGE": true,
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"TEXTSIZE": true,
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"CURRENT_TIME": true,
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"NATIONAL": true,
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"THEN": true,
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"CURRENT_TIMESTAMP": true,
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"NOCHECK": true,
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"TO": true,
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"CURRENT_USER": true,
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"NONCLUSTERED": true,
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"TOP": true,
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"CURSOR": true,
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"NOT": true,
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"TRAN": true,
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"DATABASE": true,
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"NULL": true,
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"TRANSACTION": true,
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"DBCC": true,
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"NULLIF": true,
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"TRIGGER": true,
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"DEALLOCATE": true,
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"OF": true,
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"TRUNCATE": true,
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"DECLARE": true,
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"OFF": true,
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"TRY_CONVERT": true,
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"DEFAULT": true,
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"OFFSETS": true,
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"TSEQUAL": true,
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"DELETE": true,
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"ON": true,
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"UNION": true,
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"DENY": true,
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"OPEN": true,
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"UNIQUE": true,
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"DESC": true,
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"OPENDATASOURCE": true,
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"UNPIVOT": true,
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"DISK": true,
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"OPENQUERY": true,
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"UPDATE": true,
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"DISTINCT": true,
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"OPENROWSET": true,
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"UPDATETEXT": true,
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"DISTRIBUTED": true,
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"OPENXML": true,
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"USE": true,
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"DOUBLE": true,
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"OPTION": true,
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"USER": true,
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"DROP": true,
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"OR": true,
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"VALUES": true,
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"DUMP": true,
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"ORDER": true,
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"VARYING": true,
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"ELSE": true,
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"OUTER": true,
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"VIEW": true,
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"END": true,
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"OVER": true,
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"WAITFOR": true,
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"ERRLVL": true,
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"PERCENT": true,
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"WHEN": true,
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"ESCAPE": true,
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"PIVOT": true,
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"WHERE": true,
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"EXCEPT": true,
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"PLAN": true,
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"WHILE": true,
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"EXEC": true,
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"PRECISION": true,
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"WITH": true,
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"EXECUTE": true,
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"PRIMARY": true,
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"WITHIN": true,
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"EXISTS": true,
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"PRINT": true,
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"WRITETEXT": true,
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"EXIT": true,
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"PROC": true,
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}
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mssqlQuoter = schemas.Quoter{
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Prefix: '[',
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Suffix: ']',
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IsReserved: schemas.AlwaysReserve,
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}
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)
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type mssql struct {
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Base
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defaultVarchar string
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defaultChar string
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}
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func (db *mssql) Init(uri *URI) error {
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db.quoter = mssqlQuoter
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db.defaultChar = "CHAR"
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db.defaultVarchar = "VARCHAR"
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return db.Base.Init(db, uri)
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}
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func (db *mssql) SetParams(params map[string]string) {
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defaultVarchar, ok := params["DEFAULT_VARCHAR"]
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if ok {
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var t = strings.ToUpper(defaultVarchar)
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switch t {
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case "NVARCHAR", "VARCHAR":
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db.defaultVarchar = t
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default:
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db.defaultVarchar = "VARCHAR"
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}
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} else {
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db.defaultVarchar = "VARCHAR"
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}
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defaultChar, ok := params["DEFAULT_CHAR"]
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if ok {
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var t = strings.ToUpper(defaultChar)
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switch t {
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case "NCHAR", "CHAR":
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db.defaultChar = t
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default:
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db.defaultChar = "CHAR"
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}
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} else {
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db.defaultChar = "CHAR"
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}
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}
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func (db *mssql) Version(ctx context.Context, queryer core.Queryer) (*schemas.Version, error) {
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rows, err := queryer.QueryContext(ctx,
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"SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel') AS ProductLevel, SERVERPROPERTY ('edition') AS ProductEdition")
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var version, level, edition string
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if !rows.Next() {
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return nil, errors.New("unknow version")
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}
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if err := rows.Scan(&version, &level, &edition); err != nil {
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return nil, err
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}
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// MSSQL: Microsoft SQL Server 2017 (RTM-CU13) (KB4466404) - 14.0.3048.4 (X64) Nov 30 2018 12:57:58 Copyright (C) 2017 Microsoft Corporation Developer Edition (64-bit) on Linux (Ubuntu 16.04.5 LTS)
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return &schemas.Version{
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Number: version,
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Level: level,
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Edition: edition,
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}, nil
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}
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func (db *mssql) SQLType(c *schemas.Column) string {
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var res string
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switch t := c.SQLType.Name; t {
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case schemas.Bool:
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res = schemas.Bit
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if strings.EqualFold(c.Default, "true") {
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c.Default = "1"
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} else if strings.EqualFold(c.Default, "false") {
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c.Default = "0"
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}
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return res
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case schemas.Serial:
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c.IsAutoIncrement = true
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c.IsPrimaryKey = true
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c.Nullable = false
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res = schemas.Int
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case schemas.BigSerial:
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c.IsAutoIncrement = true
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c.IsPrimaryKey = true
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c.Nullable = false
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res = schemas.BigInt
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case schemas.Bytea, schemas.Blob, schemas.Binary, schemas.TinyBlob, schemas.MediumBlob, schemas.LongBlob:
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res = schemas.VarBinary
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if c.Length == 0 {
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c.Length = 50
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}
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case schemas.TimeStamp:
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res = schemas.DateTime
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case schemas.TimeStampz:
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res = "DATETIMEOFFSET"
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c.Length = 7
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case schemas.MediumInt:
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res = schemas.Int
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case schemas.Text, schemas.MediumText, schemas.TinyText, schemas.LongText, schemas.Json:
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res = db.defaultVarchar + "(MAX)"
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case schemas.Double:
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res = schemas.Real
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case schemas.Uuid:
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res = schemas.Varchar
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c.Length = 40
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case schemas.TinyInt:
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res = schemas.TinyInt
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c.Length = 0
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case schemas.BigInt, schemas.UnsignedBigInt, schemas.UnsignedInt:
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res = schemas.BigInt
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c.Length = 0
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case schemas.NVarchar:
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res = t
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if c.Length == -1 {
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res += "(MAX)"
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}
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case schemas.Varchar:
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res = db.defaultVarchar
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if c.Length == -1 {
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res += "(MAX)"
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}
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case schemas.Char:
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res = db.defaultChar
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if c.Length == -1 {
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res += "(MAX)"
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}
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case schemas.NChar:
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res = t
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if c.Length == -1 {
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res += "(MAX)"
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}
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default:
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res = t
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}
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if res == schemas.Int || res == schemas.Bit || res == schemas.DateTime {
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return res
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}
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hasLen1 := (c.Length > 0)
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hasLen2 := (c.Length2 > 0)
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if hasLen2 {
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res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
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} else if hasLen1 {
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res += "(" + strconv.Itoa(c.Length) + ")"
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}
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return res
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}
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func (db *mssql) IsReserved(name string) bool {
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_, ok := mssqlReservedWords[strings.ToUpper(name)]
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return ok
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}
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func (db *mssql) SetQuotePolicy(quotePolicy QuotePolicy) {
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switch quotePolicy {
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case QuotePolicyNone:
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var q = mssqlQuoter
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q.IsReserved = schemas.AlwaysNoReserve
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db.quoter = q
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case QuotePolicyReserved:
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var q = mssqlQuoter
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q.IsReserved = db.IsReserved
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db.quoter = q
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case QuotePolicyAlways:
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fallthrough
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default:
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db.quoter = mssqlQuoter
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}
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}
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func (db *mssql) AutoIncrStr() string {
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return "IDENTITY"
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}
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func (db *mssql) DropTableSQL(tableName string) (string, bool) {
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return fmt.Sprintf("IF EXISTS (SELECT * FROM sysobjects WHERE id = "+
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"object_id(N'%s') and OBJECTPROPERTY(id, N'IsUserTable') = 1) "+
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"DROP TABLE \"%s\"", tableName, tableName), true
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}
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func (db *mssql) ModifyColumnSQL(tableName string, col *schemas.Column) string {
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s, _ := ColumnString(db.dialect, col, false)
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return fmt.Sprintf("ALTER TABLE %s ALTER COLUMN %s", tableName, s)
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}
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func (db *mssql) IndexCheckSQL(tableName, idxName string) (string, []interface{}) {
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args := []interface{}{idxName}
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sql := "select name from sysindexes where id=object_id('" + tableName + "') and name=?"
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return sql, args
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}
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func (db *mssql) IsColumnExist(queryer core.Queryer, ctx context.Context, tableName, colName string) (bool, error) {
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query := `SELECT "COLUMN_NAME" FROM "INFORMATION_SCHEMA"."COLUMNS" WHERE "TABLE_NAME" = ? AND "COLUMN_NAME" = ?`
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return db.HasRecords(queryer, ctx, query, tableName, colName)
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}
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func (db *mssql) IsTableExist(queryer core.Queryer, ctx context.Context, tableName string) (bool, error) {
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sql := "select * from sysobjects where id = object_id(N'" + tableName + "') and OBJECTPROPERTY(id, N'IsUserTable') = 1"
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return db.HasRecords(queryer, ctx, sql)
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}
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func (db *mssql) GetColumns(queryer core.Queryer, ctx context.Context, tableName string) ([]string, map[string]*schemas.Column, error) {
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args := []interface{}{}
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s := `select a.name as name, b.name as ctype,a.max_length,a.precision,a.scale,a.is_nullable as nullable,
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"default_is_null" = (CASE WHEN c.text is null THEN 1 ELSE 0 END),
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replace(replace(isnull(c.text,''),'(',''),')','') as vdefault,
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ISNULL(p.is_primary_key, 0), a.is_identity as is_identity
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from sys.columns a
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left join sys.types b on a.user_type_id=b.user_type_id
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left join sys.syscomments c on a.default_object_id=c.id
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LEFT OUTER JOIN (SELECT i.object_id, ic.column_id, i.is_primary_key
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FROM sys.indexes i
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LEFT JOIN sys.index_columns ic ON ic.object_id = i.object_id AND ic.index_id = i.index_id
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WHERE i.is_primary_key = 1
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) as p on p.object_id = a.object_id AND p.column_id = a.column_id
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where a.object_id=object_id('` + tableName + `')`
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rows, err := queryer.QueryContext(ctx, s, args...)
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if err != nil {
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return nil, nil, err
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}
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defer rows.Close()
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cols := make(map[string]*schemas.Column)
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colSeq := make([]string, 0)
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for rows.Next() {
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var name, ctype, vdefault string
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var maxLen, precision, scale int
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var nullable, isPK, defaultIsNull, isIncrement bool
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err = rows.Scan(&name, &ctype, &maxLen, &precision, &scale, &nullable, &defaultIsNull, &vdefault, &isPK, &isIncrement)
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if err != nil {
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return nil, nil, err
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}
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col := new(schemas.Column)
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col.Indexes = make(map[string]int)
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col.Name = strings.Trim(name, "` ")
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col.Nullable = nullable
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col.DefaultIsEmpty = defaultIsNull
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if !defaultIsNull {
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col.Default = vdefault
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}
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col.IsPrimaryKey = isPK
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col.IsAutoIncrement = isIncrement
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ct := strings.ToUpper(ctype)
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if ct == "DECIMAL" {
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col.Length = precision
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col.Length2 = scale
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} else {
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col.Length = maxLen
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}
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switch ct {
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case "DATETIMEOFFSET":
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col.SQLType = schemas.SQLType{Name: schemas.TimeStampz, DefaultLength: 0, DefaultLength2: 0}
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case "NVARCHAR":
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col.SQLType = schemas.SQLType{Name: schemas.NVarchar, DefaultLength: 0, DefaultLength2: 0}
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if col.Length > 0 {
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col.Length /= 2
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col.Length2 /= 2
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}
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case "IMAGE":
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col.SQLType = schemas.SQLType{Name: schemas.VarBinary, DefaultLength: 0, DefaultLength2: 0}
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case "NCHAR":
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if col.Length > 0 {
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col.Length /= 2
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col.Length2 /= 2
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}
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fallthrough
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default:
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if _, ok := schemas.SqlTypes[ct]; ok {
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col.SQLType = schemas.SQLType{Name: ct, DefaultLength: 0, DefaultLength2: 0}
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} else {
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return nil, nil, fmt.Errorf("Unknown colType %v for %v - %v", ct, tableName, col.Name)
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}
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}
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cols[col.Name] = col
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colSeq = append(colSeq, col.Name)
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}
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return colSeq, cols, nil
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}
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func (db *mssql) GetTables(queryer core.Queryer, ctx context.Context) ([]*schemas.Table, error) {
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args := []interface{}{}
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s := `select name from sysobjects where xtype ='U'`
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rows, err := queryer.QueryContext(ctx, s, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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tables := make([]*schemas.Table, 0)
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for rows.Next() {
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table := schemas.NewEmptyTable()
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var name string
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err = rows.Scan(&name)
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if err != nil {
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return nil, err
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}
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table.Name = strings.Trim(name, "` ")
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tables = append(tables, table)
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}
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return tables, nil
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}
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func (db *mssql) GetIndexes(queryer core.Queryer, ctx context.Context, tableName string) (map[string]*schemas.Index, error) {
|
|
args := []interface{}{tableName}
|
|
s := `SELECT
|
|
IXS.NAME AS [INDEX_NAME],
|
|
C.NAME AS [COLUMN_NAME],
|
|
IXS.is_unique AS [IS_UNIQUE]
|
|
FROM SYS.INDEXES IXS
|
|
INNER JOIN SYS.INDEX_COLUMNS IXCS
|
|
ON IXS.OBJECT_ID=IXCS.OBJECT_ID AND IXS.INDEX_ID = IXCS.INDEX_ID
|
|
INNER JOIN SYS.COLUMNS C ON IXS.OBJECT_ID=C.OBJECT_ID
|
|
AND IXCS.COLUMN_ID=C.COLUMN_ID
|
|
WHERE IXS.TYPE_DESC='NONCLUSTERED' and OBJECT_NAME(IXS.OBJECT_ID) =?
|
|
`
|
|
|
|
rows, err := queryer.QueryContext(ctx, s, args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
indexes := make(map[string]*schemas.Index, 0)
|
|
for rows.Next() {
|
|
var indexType int
|
|
var indexName, colName, isUnique string
|
|
|
|
err = rows.Scan(&indexName, &colName, &isUnique)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
i, err := strconv.ParseBool(isUnique)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if i {
|
|
indexType = schemas.UniqueType
|
|
} else {
|
|
indexType = schemas.IndexType
|
|
}
|
|
|
|
colName = strings.Trim(colName, "` ")
|
|
var isRegular bool
|
|
if (strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName)) && len(indexName) > (5+len(tableName)) {
|
|
indexName = indexName[5+len(tableName):]
|
|
isRegular = true
|
|
}
|
|
|
|
var index *schemas.Index
|
|
var ok bool
|
|
if index, ok = indexes[indexName]; !ok {
|
|
index = new(schemas.Index)
|
|
index.Type = indexType
|
|
index.Name = indexName
|
|
index.IsRegular = isRegular
|
|
indexes[indexName] = index
|
|
}
|
|
index.AddColumn(colName)
|
|
}
|
|
return indexes, nil
|
|
}
|
|
|
|
func (db *mssql) CreateTableSQL(table *schemas.Table, tableName string) ([]string, bool) {
|
|
var sql string
|
|
if tableName == "" {
|
|
tableName = table.Name
|
|
}
|
|
|
|
sql = "IF NOT EXISTS (SELECT [name] FROM sys.tables WHERE [name] = '" + tableName + "' ) CREATE TABLE "
|
|
|
|
sql += db.Quoter().Quote(tableName) + " ("
|
|
|
|
pkList := table.PrimaryKeys
|
|
|
|
for _, colName := range table.ColumnsSeq() {
|
|
col := table.GetColumn(colName)
|
|
s, _ := ColumnString(db, col, col.IsPrimaryKey && len(pkList) == 1)
|
|
sql += s
|
|
sql = strings.TrimSpace(sql)
|
|
sql += ", "
|
|
}
|
|
|
|
if len(pkList) > 1 {
|
|
sql += "PRIMARY KEY ( "
|
|
sql += strings.Join(pkList, ",")
|
|
sql += " ), "
|
|
}
|
|
|
|
sql = sql[:len(sql)-2] + ")"
|
|
sql += ";"
|
|
return []string{sql}, true
|
|
}
|
|
|
|
func (db *mssql) ForUpdateSQL(query string) string {
|
|
return query
|
|
}
|
|
|
|
func (db *mssql) Filters() []Filter {
|
|
return []Filter{}
|
|
}
|
|
|
|
type odbcDriver struct {
|
|
}
|
|
|
|
func (p *odbcDriver) Parse(driverName, dataSourceName string) (*URI, error) {
|
|
var dbName string
|
|
|
|
if strings.HasPrefix(dataSourceName, "sqlserver://") {
|
|
u, err := url.Parse(dataSourceName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
dbName = u.Query().Get("database")
|
|
} else {
|
|
kv := strings.Split(dataSourceName, ";")
|
|
for _, c := range kv {
|
|
vv := strings.Split(strings.TrimSpace(c), "=")
|
|
if len(vv) == 2 {
|
|
switch strings.ToLower(vv[0]) {
|
|
case "database":
|
|
dbName = vv[1]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if dbName == "" {
|
|
return nil, errors.New("no db name provided")
|
|
}
|
|
return &URI{DBName: dbName, DBType: schemas.MSSQL}, nil
|
|
}
|