563 lines
15 KiB
Go
563 lines
15 KiB
Go
// 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 xorm
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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"github.com/go-xorm/core"
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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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)
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type mssql struct {
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core.Base
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}
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func (db *mssql) Init(d *core.DB, uri *core.Uri, drivername, dataSourceName string) error {
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return db.Base.Init(d, db, uri, drivername, dataSourceName)
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}
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func (db *mssql) SqlType(c *core.Column) string {
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var res string
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switch t := c.SQLType.Name; t {
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case core.Bool:
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res = core.Bit
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if strings.EqualFold(c.Default, "true") {
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c.Default = "1"
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} else {
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c.Default = "0"
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}
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case core.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 = core.Int
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case core.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 = core.BigInt
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case core.Bytea, core.Blob, core.Binary, core.TinyBlob, core.MediumBlob, core.LongBlob:
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res = core.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 core.TimeStamp:
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res = core.DateTime
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case core.TimeStampz:
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res = "DATETIMEOFFSET"
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c.Length = 7
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case core.MediumInt:
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res = core.Int
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case core.Text, core.MediumText, core.TinyText, core.LongText, core.Json:
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res = core.Varchar + "(MAX)"
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case core.Double:
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res = core.Real
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case core.Uuid:
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res = core.Varchar
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c.Length = 40
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case core.TinyInt:
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res = core.TinyInt
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c.Length = 0
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default:
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res = t
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}
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if res == core.Int {
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return core.Int
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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) SupportInsertMany() bool {
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return true
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}
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func (db *mssql) IsReserved(name string) bool {
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_, ok := mssqlReservedWords[name]
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return ok
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}
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func (db *mssql) Quote(name string) string {
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return "\"" + name + "\""
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}
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func (db *mssql) QuoteStr() string {
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return "\""
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}
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func (db *mssql) SupportEngine() bool {
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return false
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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 {
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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)
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}
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func (db *mssql) SupportCharset() bool {
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return false
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}
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func (db *mssql) IndexOnTable() bool {
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return true
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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) ColumnCheckSql(tableName, colName string) (string, []interface{}) {
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args := []interface{}{tableName, colName}
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sql := `SELECT "COLUMN_NAME" FROM "INFORMATION_SCHEMA"."COLUMNS" WHERE "TABLE_NAME" = ? AND "COLUMN_NAME" = ?`
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return sql, args
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}*/
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func (db *mssql) IsColumnExist(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(query, tableName, colName)
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}
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func (db *mssql) TableCheckSql(tableName string) (string, []interface{}) {
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args := []interface{}{}
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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 sql, args
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}
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func (db *mssql) GetColumns(tableName string) ([]string, map[string]*core.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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replace(replace(isnull(c.text,''),'(',''),')','') as vdefault,
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ISNULL(i.is_primary_key, 0)
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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
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sys.index_columns ic ON ic.object_id = a.object_id AND ic.column_id = a.column_id
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LEFT OUTER JOIN
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sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
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where a.object_id=object_id('` + tableName + `')`
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db.LogSQL(s, args)
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rows, err := db.DB().Query(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]*core.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 bool
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err = rows.Scan(&name, &ctype, &maxLen, &precision, &scale, &nullable, &vdefault, &isPK)
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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(core.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.Default = vdefault
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col.IsPrimaryKey = isPK
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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 = core.SQLType{Name: core.TimeStampz, DefaultLength: 0, DefaultLength2: 0}
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case "NVARCHAR":
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col.SQLType = core.SQLType{Name: core.NVarchar, DefaultLength: 0, DefaultLength2: 0}
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case "IMAGE":
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col.SQLType = core.SQLType{Name: core.VarBinary, DefaultLength: 0, DefaultLength2: 0}
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default:
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if _, ok := core.SqlTypes[ct]; ok {
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col.SQLType = core.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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if col.SQLType.IsText() || col.SQLType.IsTime() {
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if col.Default != "" {
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col.Default = "'" + col.Default + "'"
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} else {
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if col.DefaultIsEmpty {
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col.Default = "''"
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}
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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() ([]*core.Table, error) {
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args := []interface{}{}
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s := `select name from sysobjects where xtype ='U'`
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db.LogSQL(s, args)
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rows, err := db.DB().Query(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([]*core.Table, 0)
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for rows.Next() {
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table := core.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(tableName string) (map[string]*core.Index, error) {
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args := []interface{}{tableName}
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s := `SELECT
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IXS.NAME AS [INDEX_NAME],
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C.NAME AS [COLUMN_NAME],
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IXS.is_unique AS [IS_UNIQUE]
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FROM SYS.INDEXES IXS
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INNER JOIN SYS.INDEX_COLUMNS IXCS
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ON IXS.OBJECT_ID=IXCS.OBJECT_ID AND IXS.INDEX_ID = IXCS.INDEX_ID
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INNER JOIN SYS.COLUMNS C ON IXS.OBJECT_ID=C.OBJECT_ID
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AND IXCS.COLUMN_ID=C.COLUMN_ID
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WHERE IXS.TYPE_DESC='NONCLUSTERED' and OBJECT_NAME(IXS.OBJECT_ID) =?
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`
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db.LogSQL(s, args)
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rows, err := db.DB().Query(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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indexes := make(map[string]*core.Index, 0)
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for rows.Next() {
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var indexType int
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var indexName, colName, isUnique string
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err = rows.Scan(&indexName, &colName, &isUnique)
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if err != nil {
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return nil, err
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}
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i, err := strconv.ParseBool(isUnique)
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if err != nil {
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return nil, err
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}
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if i {
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indexType = core.UniqueType
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} else {
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indexType = core.IndexType
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}
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colName = strings.Trim(colName, "` ")
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var isRegular bool
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if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
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indexName = indexName[5+len(tableName):]
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isRegular = true
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}
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var index *core.Index
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var ok bool
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if index, ok = indexes[indexName]; !ok {
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index = new(core.Index)
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index.Type = indexType
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index.Name = indexName
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index.IsRegular = isRegular
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indexes[indexName] = index
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}
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index.AddColumn(colName)
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}
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return indexes, nil
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}
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func (db *mssql) CreateTableSql(table *core.Table, tableName, storeEngine, charset string) string {
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var sql string
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if tableName == "" {
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tableName = table.Name
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}
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sql = "IF NOT EXISTS (SELECT [name] FROM sys.tables WHERE [name] = '" + tableName + "' ) CREATE TABLE "
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sql += db.QuoteStr() + tableName + db.QuoteStr() + " ("
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pkList := table.PrimaryKeys
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for _, colName := range table.ColumnsSeq() {
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col := table.GetColumn(colName)
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if col.IsPrimaryKey && len(pkList) == 1 {
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sql += col.String(db)
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} else {
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sql += col.StringNoPk(db)
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}
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sql = strings.TrimSpace(sql)
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sql += ", "
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}
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if len(pkList) > 1 {
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sql += "PRIMARY KEY ( "
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sql += strings.Join(pkList, ",")
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sql += " ), "
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}
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sql = sql[:len(sql)-2] + ")"
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sql += ";"
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return sql
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}
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func (db *mssql) ForUpdateSql(query string) string {
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return query
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}
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func (db *mssql) Filters() []core.Filter {
|
|
return []core.Filter{&core.IdFilter{}, &core.QuoteFilter{}}
|
|
}
|
|
|
|
type odbcDriver struct {
|
|
}
|
|
|
|
func (p *odbcDriver) Parse(driverName, dataSourceName string) (*core.Uri, error) {
|
|
kv := strings.Split(dataSourceName, ";")
|
|
var dbName string
|
|
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 &core.Uri{DbName: dbName, DbType: core.MSSQL}, nil
|
|
}
|