// Copyright 2015 The Xorm Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package dialects import ( "context" "database/sql" "errors" "fmt" "net/url" "strconv" "strings" "xorm.io/xorm/core" "xorm.io/xorm/schemas" ) var ( mssqlReservedWords = map[string]bool{ "ADD": true, "EXTERNAL": true, "PROCEDURE": true, "ALL": true, "FETCH": true, "PUBLIC": true, "ALTER": true, "FILE": true, "RAISERROR": true, "AND": true, "FILLFACTOR": true, "READ": true, "ANY": true, "FOR": true, "READTEXT": true, "AS": true, "FOREIGN": true, "RECONFIGURE": true, "ASC": true, "FREETEXT": true, "REFERENCES": true, "AUTHORIZATION": true, "FREETEXTTABLE": true, "REPLICATION": true, "BACKUP": true, "FROM": true, "RESTORE": true, "BEGIN": true, "FULL": true, "RESTRICT": true, "BETWEEN": true, "FUNCTION": true, "RETURN": true, "BREAK": true, "GOTO": true, "REVERT": true, "BROWSE": true, "GRANT": true, "REVOKE": true, "BULK": true, "GROUP": true, "RIGHT": true, "BY": true, "HAVING": true, "ROLLBACK": true, "CASCADE": true, "HOLDLOCK": true, "ROWCOUNT": true, "CASE": true, "IDENTITY": true, "ROWGUIDCOL": true, "CHECK": true, "IDENTITY_INSERT": true, "RULE": true, "CHECKPOINT": true, "IDENTITYCOL": true, "SAVE": true, "CLOSE": true, "IF": true, "SCHEMA": true, "CLUSTERED": true, "IN": true, "SECURITYAUDIT": true, "COALESCE": true, "INDEX": true, "SELECT": true, "COLLATE": true, "INNER": true, "SEMANTICKEYPHRASETABLE": true, "COLUMN": true, "INSERT": true, "SEMANTICSIMILARITYDETAILSTABLE": true, "COMMIT": true, "INTERSECT": true, "SEMANTICSIMILARITYTABLE": true, "COMPUTE": true, "INTO": true, "SESSION_USER": true, "CONSTRAINT": true, "IS": true, "SET": true, "CONTAINS": true, "JOIN": true, "SETUSER": true, "CONTAINSTABLE": true, "KEY": true, "SHUTDOWN": true, "CONTINUE": true, "KILL": true, "SOME": true, "CONVERT": true, "LEFT": true, "STATISTICS": true, "CREATE": true, "LIKE": true, "SYSTEM_USER": true, "CROSS": true, "LINENO": true, "TABLE": true, "CURRENT": true, "LOAD": true, "TABLESAMPLE": true, "CURRENT_DATE": true, "MERGE": true, "TEXTSIZE": true, "CURRENT_TIME": true, "NATIONAL": true, "THEN": true, "CURRENT_TIMESTAMP": true, "NOCHECK": true, "TO": true, "CURRENT_USER": true, "NONCLUSTERED": true, "TOP": true, "CURSOR": true, "NOT": true, "TRAN": true, "DATABASE": true, "NULL": true, "TRANSACTION": true, "DBCC": true, "NULLIF": true, "TRIGGER": true, "DEALLOCATE": true, "OF": true, "TRUNCATE": true, "DECLARE": true, "OFF": true, "TRY_CONVERT": true, "DEFAULT": true, "OFFSETS": true, "TSEQUAL": true, "DELETE": true, "ON": true, "UNION": true, "DENY": true, "OPEN": true, "UNIQUE": true, "DESC": true, "OPENDATASOURCE": true, "UNPIVOT": true, "DISK": true, "OPENQUERY": true, "UPDATE": true, "DISTINCT": true, "OPENROWSET": true, "UPDATETEXT": true, "DISTRIBUTED": true, "OPENXML": true, "USE": true, "DOUBLE": true, "OPTION": true, "USER": true, "DROP": true, "OR": true, "VALUES": true, "DUMP": true, "ORDER": true, "VARYING": true, "ELSE": true, "OUTER": true, "VIEW": true, "END": true, "OVER": true, "WAITFOR": true, "ERRLVL": true, "PERCENT": true, "WHEN": true, "ESCAPE": true, "PIVOT": true, "WHERE": true, "EXCEPT": true, "PLAN": true, "WHILE": true, "EXEC": true, "PRECISION": true, "WITH": true, "EXECUTE": true, "PRIMARY": true, "WITHIN": true, "EXISTS": true, "PRINT": true, "WRITETEXT": true, "EXIT": true, "PROC": true, } mssqlQuoter = schemas.Quoter{ Prefix: '[', Suffix: ']', IsReserved: schemas.AlwaysReserve, } ) type mssql struct { Base defaultVarchar string defaultChar string useLegacy bool } func (db *mssql) Init(uri *URI) error { db.quoter = mssqlQuoter db.defaultChar = "CHAR" db.defaultVarchar = "VARCHAR" return db.Base.Init(db, uri) } func (db *mssql) UseLegacyLimitOffset() bool { return db.useLegacy } func (db *mssql) SetParams(params map[string]string) { defaultVarchar, ok := params["DEFAULT_VARCHAR"] if ok { t := strings.ToUpper(defaultVarchar) switch t { case "NVARCHAR", "VARCHAR": db.defaultVarchar = t default: db.defaultVarchar = "VARCHAR" } } else { db.defaultVarchar = "VARCHAR" } defaultChar, ok := params["DEFAULT_CHAR"] if ok { t := strings.ToUpper(defaultChar) switch t { case "NCHAR", "CHAR": db.defaultChar = t default: db.defaultChar = "CHAR" } } else { db.defaultChar = "CHAR" } useLegacy, ok := params["USE_LEGACY_LIMIT_OFFSET"] if ok { if b, _ := strconv.ParseBool(useLegacy); b { db.useLegacy = true } } } func (db *mssql) Version(ctx context.Context, queryer core.Queryer) (*schemas.Version, error) { rows, err := queryer.QueryContext(ctx, "SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel') AS ProductLevel, SERVERPROPERTY ('edition') AS ProductEdition") if err != nil { return nil, err } defer rows.Close() var version, level, edition string if !rows.Next() { if rows.Err() != nil { return nil, rows.Err() } return nil, errors.New("unknow version") } if err := rows.Scan(&version, &level, &edition); err != nil { return nil, err } // 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) return &schemas.Version{ Number: version, Level: level, Edition: edition, }, nil } func (db *mssql) Features() *DialectFeatures { return &DialectFeatures{ AutoincrMode: IncrAutoincrMode, } } func (db *mssql) SQLType(c *schemas.Column) string { var res string switch t := c.SQLType.Name; t { case schemas.Bool, schemas.Boolean: res = schemas.Bit if strings.EqualFold(c.Default, "true") { c.Default = "1" } else if strings.EqualFold(c.Default, "false") { c.Default = "0" } return res case schemas.Serial: c.IsAutoIncrement = true c.IsPrimaryKey = true c.Nullable = false res = schemas.Int case schemas.BigSerial: c.IsAutoIncrement = true c.IsPrimaryKey = true c.Nullable = false res = schemas.BigInt case schemas.Bytea, schemas.Binary: res = schemas.VarBinary if c.Length == 0 { c.Length = 50 } case schemas.Blob, schemas.TinyBlob, schemas.MediumBlob, schemas.LongBlob: res = schemas.VarBinary if c.Length == 0 { res += "(MAX)" } case schemas.TimeStamp, schemas.DateTime: if c.Length > 3 { res = "DATETIME2" } else { return schemas.DateTime } case schemas.TimeStampz: res = "DATETIMEOFFSET" c.Length = 7 case schemas.MediumInt, schemas.TinyInt, schemas.SmallInt, schemas.UnsignedMediumInt, schemas.UnsignedTinyInt, schemas.UnsignedSmallInt: res = schemas.Int case schemas.Text, schemas.MediumText, schemas.TinyText, schemas.LongText, schemas.Json: res = db.defaultVarchar + "(MAX)" case schemas.Double, schemas.UnsignedFloat: res = schemas.Real case schemas.Uuid: res = schemas.Varchar c.Length = 40 case schemas.TinyInt: res = schemas.TinyInt c.Length = 0 case schemas.BigInt, schemas.UnsignedBigInt, schemas.UnsignedInt: res = schemas.BigInt c.Length = 0 case schemas.NVarchar: res = t if c.Length == -1 { res += "(MAX)" } case schemas.Varchar: res = db.defaultVarchar if c.Length == -1 { res += "(MAX)" } case schemas.Char: res = db.defaultChar if c.Length == -1 { res += "(MAX)" } case schemas.NChar: res = t if c.Length == -1 { res += "(MAX)" } default: res = t } if res == schemas.Int || res == schemas.Bit { return res } hasLen1 := (c.Length > 0) hasLen2 := (c.Length2 > 0) if hasLen2 { res += "(" + strconv.FormatInt(c.Length, 10) + "," + strconv.FormatInt(c.Length2, 10) + ")" } else if hasLen1 { res += "(" + strconv.FormatInt(c.Length, 10) + ")" } return res } func (db *mssql) ColumnTypeKind(t string) int { switch strings.ToUpper(t) { case "DATE", "DATETIME", "DATETIME2", "TIME": return schemas.TIME_TYPE case "VARCHAR", "TEXT", "CHAR", "NVARCHAR", "NCHAR", "NTEXT": return schemas.TEXT_TYPE case "FLOAT", "REAL", "BIGINT", "DATETIMEOFFSET", "TINYINT", "SMALLINT", "INT": return schemas.NUMERIC_TYPE default: return schemas.UNKNOW_TYPE } } func (db *mssql) IsReserved(name string) bool { _, ok := mssqlReservedWords[strings.ToUpper(name)] return ok } func (db *mssql) SetQuotePolicy(quotePolicy QuotePolicy) { switch quotePolicy { case QuotePolicyNone: q := mssqlQuoter q.IsReserved = schemas.AlwaysNoReserve db.quoter = q case QuotePolicyReserved: q := mssqlQuoter q.IsReserved = db.IsReserved db.quoter = q case QuotePolicyAlways: fallthrough default: db.quoter = mssqlQuoter } } func (db *mssql) AutoIncrStr() string { return "IDENTITY" } func (db *mssql) DropTableSQL(tableName string) (string, bool) { return fmt.Sprintf("IF EXISTS (SELECT * FROM sysobjects WHERE id = "+ "object_id(N'%s') and OBJECTPROPERTY(id, N'IsUserTable') = 1) "+ "DROP TABLE \"%s\"", tableName, tableName), true } func (db *mssql) ModifyColumnSQL(tableName string, col *schemas.Column) string { s, _ := ColumnString(db.dialect, col, false, true) return fmt.Sprintf("ALTER TABLE %s ALTER COLUMN %s", db.quoter.Quote(tableName), s) } func (db *mssql) IndexCheckSQL(tableName, idxName string) (string, []interface{}) { args := []interface{}{idxName} sql := "select name from sysindexes where id=object_id('" + tableName + "') and name=?" return sql, args } func (db *mssql) IsColumnExist(queryer core.Queryer, ctx context.Context, tableName, colName string) (bool, error) { query := `SELECT "COLUMN_NAME" FROM "INFORMATION_SCHEMA"."COLUMNS" WHERE "TABLE_NAME" = ? AND "COLUMN_NAME" = ?` return db.HasRecords(queryer, ctx, query, tableName, colName) } func (db *mssql) IsTableExist(queryer core.Queryer, ctx context.Context, tableName string) (bool, error) { sql := "select * from sysobjects where id = object_id(N'" + tableName + "') and OBJECTPROPERTY(id, N'IsUserTable') = 1" return db.HasRecords(queryer, ctx, sql) } func (db *mssql) GetColumns(queryer core.Queryer, ctx context.Context, tableName string) ([]string, map[string]*schemas.Column, error) { args := []interface{}{} s := `select a.name as name, b.name as ctype,a.max_length,a.precision,a.scale,a.is_nullable as nullable, "default_is_null" = (CASE WHEN c.text is null THEN 1 ELSE 0 END), replace(replace(isnull(c.text,''),'(',''),')','') as vdefault, ISNULL(p.is_primary_key, 0), a.is_identity as is_identity, a.collation_name from sys.columns a left join sys.types b on a.user_type_id=b.user_type_id left join sys.syscomments c on a.default_object_id=c.id LEFT OUTER JOIN (SELECT i.object_id, ic.column_id, i.is_primary_key FROM sys.indexes i LEFT JOIN sys.index_columns ic ON ic.object_id = i.object_id AND ic.index_id = i.index_id WHERE i.is_primary_key = 1 ) as p on p.object_id = a.object_id AND p.column_id = a.column_id where a.object_id=object_id('` + tableName + `')` rows, err := queryer.QueryContext(ctx, s, args...) if err != nil { return nil, nil, err } defer rows.Close() cols := make(map[string]*schemas.Column) colSeq := make([]string, 0) for rows.Next() { var name, ctype, vdefault string var collation *string var maxLen, precision, scale int64 var nullable, isPK, defaultIsNull, isIncrement bool err = rows.Scan(&name, &ctype, &maxLen, &precision, &scale, &nullable, &defaultIsNull, &vdefault, &isPK, &isIncrement, &collation) if err != nil { return nil, nil, err } col := new(schemas.Column) col.Indexes = make(map[string]int) col.Name = strings.Trim(name, "` ") col.Nullable = nullable col.DefaultIsEmpty = defaultIsNull if !defaultIsNull { col.Default = vdefault } col.IsPrimaryKey = isPK col.IsAutoIncrement = isIncrement ct := strings.ToUpper(ctype) if ct == "DECIMAL" { col.Length = precision col.Length2 = scale } else { col.Length = maxLen } if collation != nil { col.Collation = *collation } switch ct { case "DATETIMEOFFSET": col.SQLType = schemas.SQLType{Name: schemas.TimeStampz, DefaultLength: 0, DefaultLength2: 0} case "NVARCHAR": col.SQLType = schemas.SQLType{Name: schemas.NVarchar, DefaultLength: 0, DefaultLength2: 0} if col.Length > 0 { col.Length /= 2 col.Length2 /= 2 } case "DATETIME2": col.SQLType = schemas.SQLType{Name: schemas.DateTime, DefaultLength: 7, DefaultLength2: 0} col.Length = scale case "DATETIME": col.SQLType = schemas.SQLType{Name: schemas.DateTime, DefaultLength: 3, DefaultLength2: 0} col.Length = scale case "IMAGE": col.SQLType = schemas.SQLType{Name: schemas.VarBinary, DefaultLength: 0, DefaultLength2: 0} case "NCHAR": if col.Length > 0 { col.Length /= 2 col.Length2 /= 2 } fallthrough default: if _, ok := schemas.SqlTypes[ct]; ok { col.SQLType = schemas.SQLType{Name: ct, DefaultLength: 0, DefaultLength2: 0} } else { return nil, nil, fmt.Errorf("Unknown colType %v for %v - %v", ct, tableName, col.Name) } } cols[col.Name] = col colSeq = append(colSeq, col.Name) } if rows.Err() != nil { return nil, nil, rows.Err() } return colSeq, cols, nil } func (db *mssql) GetTables(queryer core.Queryer, ctx context.Context) ([]*schemas.Table, error) { args := []interface{}{} s := `select name from sysobjects where xtype ='U'` rows, err := queryer.QueryContext(ctx, s, args...) if err != nil { return nil, err } defer rows.Close() tables := make([]*schemas.Table, 0) for rows.Next() { table := schemas.NewEmptyTable() var name string err = rows.Scan(&name) if err != nil { return nil, err } table.Name = strings.Trim(name, "` ") tables = append(tables, table) } if rows.Err() != nil { return nil, rows.Err() } return tables, nil } 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) 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) } if rows.Err() != nil { return nil, rows.Err() } return indexes, nil } func (db *mssql) CreateTableSQL(ctx context.Context, queryer core.Queryer, table *schemas.Table, tableName string) (string, bool, error) { if tableName == "" { tableName = table.Name } quoter := db.dialect.Quoter() var b strings.Builder b.WriteString("IF NOT EXISTS (SELECT [name] FROM sys.tables WHERE [name] = '") quoter.QuoteTo(&b, tableName) b.WriteString("' ) CREATE TABLE ") quoter.QuoteTo(&b, tableName) b.WriteString(" (") for i, colName := range table.ColumnsSeq() { col := table.GetColumn(colName) s, _ := ColumnString(db.dialect, col, col.IsPrimaryKey && len(table.PrimaryKeys) == 1, true) b.WriteString(s) if i != len(table.ColumnsSeq())-1 { b.WriteString(", ") } } if len(table.PrimaryKeys) > 1 { b.WriteString(", PRIMARY KEY (") b.WriteString(quoter.Join(table.PrimaryKeys, ",")) b.WriteString(")") } b.WriteString(")") return b.String(), true, nil } func (db *mssql) Filters() []Filter { return []Filter{} } type odbcDriver struct { baseDriver } func (p *odbcDriver) Features() *DriverFeatures { return &DriverFeatures{ SupportReturnInsertedID: false, } } 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 { if strings.ToLower(vv[0]) == "database" { dbName = vv[1] } } } } if dbName == "" { return nil, errors.New("no db name provided") } return &URI{DBName: dbName, DBType: schemas.MSSQL}, nil } func (p *odbcDriver) GenScanResult(colType string) (interface{}, error) { switch colType { case "VARCHAR", "TEXT", "CHAR", "NVARCHAR", "NCHAR", "NTEXT": fallthrough case "DATE", "DATETIME", "DATETIME2", "TIME": var s sql.NullString return &s, nil case "FLOAT", "REAL": var s sql.NullFloat64 return &s, nil case "BIGINT", "DATETIMEOFFSET": var s sql.NullInt64 return &s, nil case "TINYINT", "SMALLINT", "INT": var s sql.NullInt32 return &s, nil default: var r sql.RawBytes return &r, nil } }