diff --git a/chain.go b/chain.go
index 35371a1..d4b728e 100644
--- a/chain.go
+++ b/chain.go
@@ -241,7 +241,7 @@ func (this *Query) GetTableInfo(table string) (map[string]interface{}, error) {
 		"IS_NULLABLE",    //是否为空
 	}
 	sql := "select `" + strings.Join(field, "`,`") + "` from information_schema.COLUMNS where table_name = ? and table_schema = ?"
-
+	valuelist := []interface{}{table}
 	if DB_PROVIDER == "PgsqlDb" {
 		//pgsql中，未加引号的标识符会被自动转换为小写
 		sql = `SELECT
@@ -277,6 +277,8 @@ func (this *Query) GetTableInfo(table string) (map[string]interface{}, error) {
 				ALL_TAB_COLUMNS 
 			WHERE 
 			    TABLE_NAME = ?`
+	} else {
+		valuelist = append(valuelist, this.dbname)
 	}
 
 	if this.conn == nil {
@@ -287,9 +289,12 @@ func (this *Query) GetTableInfo(table string) (map[string]interface{}, error) {
 	if err != nil {
 		return nil, err
 	}
-	valuelist := []interface{}{table}
-	if DB_PROVIDER == "" {
-		valuelist = []interface{}{table, this.dbname}
+
+	//if DB_PROVIDER == "" {
+	//	valuelist = []interface{}{table, this.dbname}
+	//}
+	if this.debug {
+		log.Println("GetTableInfo sql:", sql, valuelist)
 	}
 	list, err := StmtForQueryList(stmtSql, valuelist)
 	if err != nil {