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Include table_schema when query from INFORMATION_SCHEMA for mysql

This commit is contained in:
Jinzhu 2014-04-25 09:26:02 +08:00
parent 66e6c9af9f
commit 6dc332e04d
1 changed files with 15 additions and 2 deletions
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17
mysql.go
View File

@ -2,6 +2,7 @@ package gorm
import (
"fmt"
"strings"
"reflect"
)
@ -68,10 +69,21 @@ func (s *mysql) Quote(key string) string {
return fmt.Sprintf("`%s`", key)
}
func (s *mysql) databaseName(scope *Scope) string {
from := strings.Index(scope.db.parent.source, "/") + 1
to := strings.Index(scope.db.parent.source, "?")
if to == -1 {
to = len(scope.db.parent.source)
}
return scope.db.parent.source[from:to]
}
func (s *mysql) HasTable(scope *Scope, tableName string) bool {
var count int
newScope := scope.New(nil)
newScope.Raw(fmt.Sprintf("SELECT count(*) FROM INFORMATION_SCHEMA.tables where table_name = %v", newScope.AddToVars(tableName)))
newScope.Raw(fmt.Sprintf("SELECT count(*) FROM INFORMATION_SCHEMA.tables where table_name = %v AND table_schema = %v",
newScope.AddToVars(tableName),
newScope.AddToVars(s.databaseName(scope))))
newScope.DB().QueryRow(newScope.Sql, newScope.SqlVars...).Scan(&count)
return count > 0
}
@ -79,7 +91,8 @@ func (s *mysql) HasTable(scope *Scope, tableName string) bool {
func (s *mysql) HasColumn(scope *Scope, tableName string, columnName string) bool {
var count int
newScope := scope.New(nil)
newScope.Raw(fmt.Sprintf("SELECT count(*) FROM information_schema.columns WHERE table_name = %v AND column_name = %v",
newScope.Raw(fmt.Sprintf("SELECT count(*) FROM information_schema.columns WHERE table_schema = %v AND table_name = %v AND column_name = %v",
newScope.AddToVars(s.databaseName(scope)),
newScope.AddToVars(tableName),
newScope.AddToVars(columnName),
))