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// 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 xorm
import (
"errors"
"fmt"
"strconv"
"strings"
"github.com/go-xorm/core"
)
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,
}
)
type mssql struct {
core.Base
}
func (db *mssql) Init(d *core.DB, uri *core.Uri, drivername, dataSourceName string) error {
return db.Base.Init(d, db, uri, drivername, dataSourceName)
}
func (db *mssql) SqlType(c *core.Column) string {
var res string
switch t := c.SQLType.Name; t {
case core.Bool:
res = core.Bit
if strings.EqualFold(c.Default, "true") {
c.Default = "1"
} else {
c.Default = "0"
}
case core.Serial:
c.IsAutoIncrement = true
c.IsPrimaryKey = true
c.Nullable = false
res = core.Int
case core.BigSerial:
c.IsAutoIncrement = true
c.IsPrimaryKey = true
c.Nullable = false
res = core.BigInt
case core.Bytea, core.Blob, core.Binary, core.TinyBlob, core.MediumBlob, core.LongBlob:
res = core.VarBinary
if c.Length == 0 {
c.Length = 50
}
case core.TimeStamp:
res = core.DateTime
case core.TimeStampz:
res = "DATETIMEOFFSET"
c.Length = 7
case core.MediumInt:
res = core.Int
case core.Text, core.MediumText, core.TinyText, core.LongText, core.Json:
res = core.Varchar + "(MAX)"
case core.Double:
res = core.Real
case core.Uuid:
res = core.Varchar
c.Length = 40
case core.TinyInt:
res = core.TinyInt
c.Length = 0
default:
res = t
}
if res == core.Int {
return core.Int
}
hasLen1 := (c.Length > 0)
hasLen2 := (c.Length2 > 0)
if hasLen2 {
res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
} else if hasLen1 {
res += "(" + strconv.Itoa(c.Length) + ")"
}
return res
}
func (db *mssql) SupportInsertMany() bool {
return true
}
func (db *mssql) IsReserved(name string) bool {
_, ok := mssqlReservedWords[name]
return ok
}
func (db *mssql) Quote(name string) string {
return "\"" + name + "\""
}
func (db *mssql) QuoteStr() string {
return "\""
}
func (db *mssql) SupportEngine() bool {
return false
}
func (db *mssql) AutoIncrStr() string {
return "IDENTITY"
}
func (db *mssql) DropTableSql(tableName string) string {
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)
}
func (db *mssql) SupportCharset() bool {
return false
}
func (db *mssql) IndexOnTable() bool {
return true
}
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) ColumnCheckSql(tableName, colName string) (string, []interface{}) {
args := []interface{}{tableName, colName}
sql := `SELECT "COLUMN_NAME" FROM "INFORMATION_SCHEMA"."COLUMNS" WHERE "TABLE_NAME" = ? AND "COLUMN_NAME" = ?`
return sql, args
}*/
func (db *mssql) IsColumnExist(tableName, colName string) (bool, error) {
query := `SELECT "COLUMN_NAME" FROM "INFORMATION_SCHEMA"."COLUMNS" WHERE "TABLE_NAME" = ? AND "COLUMN_NAME" = ?`
return db.HasRecords(query, tableName, colName)
}
func (db *mssql) TableCheckSql(tableName string) (string, []interface{}) {
args := []interface{}{}
sql := "select * from sysobjects where id = object_id(N'" + tableName + "') and OBJECTPROPERTY(id, N'IsUserTable') = 1"
return sql, args
}
func (db *mssql) GetColumns(tableName string) ([]string, map[string]*core.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,
replace(replace(isnull(c.text,''),'(',''),')','') as vdefault,
ISNULL(i.is_primary_key, 0)
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
sys.index_columns ic ON ic.object_id = a.object_id AND ic.column_id = a.column_id
LEFT OUTER JOIN
sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
where a.object_id=object_id('` + tableName + `')`
db.LogSQL(s, args)
rows, err := db.DB().Query(s, args...)
if err != nil {
return nil, nil, err
}
defer rows.Close()
cols := make(map[string]*core.Column)
colSeq := make([]string, 0)
for rows.Next() {
var name, ctype, vdefault string
var maxLen, precision, scale int
var nullable, isPK bool
err = rows.Scan(&name, &ctype, &maxLen, &precision, &scale, &nullable, &vdefault, &isPK)
if err != nil {
return nil, nil, err
}
col := new(core.Column)
col.Indexes = make(map[string]int)
col.Name = strings.Trim(name, "` ")
col.Nullable = nullable
col.Default = vdefault
col.IsPrimaryKey = isPK
ct := strings.ToUpper(ctype)
if ct == "DECIMAL" {
col.Length = precision
col.Length2 = scale
} else {
col.Length = maxLen
}
switch ct {
case "DATETIMEOFFSET":
col.SQLType = core.SQLType{Name: core.TimeStampz, DefaultLength: 0, DefaultLength2: 0}
case "NVARCHAR":
col.SQLType = core.SQLType{Name: core.NVarchar, DefaultLength: 0, DefaultLength2: 0}
case "IMAGE":
col.SQLType = core.SQLType{Name: core.VarBinary, DefaultLength: 0, DefaultLength2: 0}
default:
if _, ok := core.SqlTypes[ct]; ok {
col.SQLType = core.SQLType{Name: ct, DefaultLength: 0, DefaultLength2: 0}
} else {
return nil, nil, fmt.Errorf("Unknown colType %v for %v - %v", ct, tableName, col.Name)
}
}
if col.SQLType.IsText() || col.SQLType.IsTime() {
if col.Default != "" {
col.Default = "'" + col.Default + "'"
} else {
if col.DefaultIsEmpty {
col.Default = "''"
}
}
}
cols[col.Name] = col
colSeq = append(colSeq, col.Name)
}
return colSeq, cols, nil
}
func (db *mssql) GetTables() ([]*core.Table, error) {
args := []interface{}{}
s := `select name from sysobjects where xtype ='U'`
db.LogSQL(s, args)
rows, err := db.DB().Query(s, args...)
if err != nil {
return nil, err
}
defer rows.Close()
tables := make([]*core.Table, 0)
for rows.Next() {
table := core.NewEmptyTable()
var name string
err = rows.Scan(&name)
if err != nil {
return nil, err
}
table.Name = strings.Trim(name, "` ")
tables = append(tables, table)
}
return tables, nil
}
func (db *mssql) GetIndexes(tableName string) (map[string]*core.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) =?
`
db.LogSQL(s, args)
rows, err := db.DB().Query(s, args...)
if err != nil {
return nil, err
}
defer rows.Close()
indexes := make(map[string]*core.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 = core.UniqueType
} else {
indexType = core.IndexType
}
colName = strings.Trim(colName, "` ")
var isRegular bool
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
indexName = indexName[5+len(tableName):]
isRegular = true
}
var index *core.Index
var ok bool
if index, ok = indexes[indexName]; !ok {
index = new(core.Index)
index.Type = indexType
index.Name = indexName
index.IsRegular = isRegular
indexes[indexName] = index
}
index.AddColumn(colName)
}
return indexes, nil
}
func (db *mssql) CreateTableSql(table *core.Table, tableName, storeEngine, charset string) string {
var sql string
if tableName == "" {
tableName = table.Name
}
sql = "IF NOT EXISTS (SELECT [name] FROM sys.tables WHERE [name] = '" + tableName + "' ) CREATE TABLE "
sql += db.QuoteStr() + tableName + db.QuoteStr() + " ("
pkList := table.PrimaryKeys
for _, colName := range table.ColumnsSeq() {
col := table.GetColumn(colName)
if col.IsPrimaryKey && len(pkList) == 1 {
sql += col.String(db)
} else {
sql += col.StringNoPk(db)
}
sql = strings.TrimSpace(sql)
sql += ", "
}
if len(pkList) > 1 {
sql += "PRIMARY KEY ( "
sql += strings.Join(pkList, ",")
sql += " ), "
}
sql = sql[:len(sql)-2] + ")"
sql += ";"
return sql
}
func (db *mssql) ForUpdateSql(query string) string {
return query
}
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
}