diff --git a/database/gdb/gdb_mssql.go b/database/gdb/gdb_mssql.go
index fe04d1f68..af183389c 100644
--- a/database/gdb/gdb_mssql.go
+++ b/database/gdb/gdb_mssql.go
@@ -163,8 +163,22 @@ func (db *dbMssql) parseSql(sql string) string {
 }
 
 // Tables retrieves and returns the tables of current schema.
-// TODO
 func (db *dbMssql) Tables(schema ...string) (tables []string, err error) {
+	var result Result
+	link, err := db.getSlave(schema...)
+	if err != nil {
+		return nil, err
+	}
+
+	result, err = db.doGetAll(link, `SELECT NAME FROM SYSOBJECTS WHERE XTYPE='U' AND STATUS >= 0 ORDER BY NAME`)
+	if err != nil {
+		return
+	}
+	for _, m := range result {
+		for _, v := range m {
+			tables = append(tables, strings.ToLower(v.String()))
+		}
+	}
 	return
 }
 
diff --git a/database/gdb/gdb_oracle.go b/database/gdb/gdb_oracle.go
index 7186b1160..751f46f72 100644
--- a/database/gdb/gdb_oracle.go
+++ b/database/gdb/gdb_oracle.go
@@ -123,8 +123,18 @@ func (db *dbOracle) parseSql(sql string) string {
 }
 
 // Tables retrieves and returns the tables of current schema.
-// TODO
 func (db *dbOracle) Tables(schema ...string) (tables []string, err error) {
+	var result Result
+
+	result, err = db.doGetAll(nil, "SELECT TABLE_NAME FROM USER_TABLES ORDER BY TABLE_NAME")
+	if err != nil {
+		return
+	}
+	for _, m := range result {
+		for _, v := range m {
+			tables = append(tables, strings.ToLower(v.String()))
+		}
+	}
 	return
 }
 
diff --git a/database/gdb/gdb_pgsql.go b/database/gdb/gdb_pgsql.go
index 3aa6f11ee..24b9b3e38 100644
--- a/database/gdb/gdb_pgsql.go
+++ b/database/gdb/gdb_pgsql.go
@@ -62,8 +62,26 @@ func (db *dbPgsql) handleSqlBeforeExec(sql string) string {
 }
 
 // Tables retrieves and returns the tables of current schema.
-// TODO
 func (db *dbPgsql) Tables(schema ...string) (tables []string, err error) {
+	var result Result
+	link, err := db.getSlave(schema...)
+	if err != nil {
+		return nil, err
+	}
+
+	query := "SELECT TABLENAME FROM PG_TABLES WHERE SCHEMANAME = 'public' ORDER BY TABLENAME"
+	if len(schema) > 0 && schema[0] != "" {
+		query = fmt.Sprintf("SELECT TABLENAME FROM PG_TABLES WHERE SCHEMANAME = '%s' ORDER BY TABLENAME", schema[0])
+	}
+	result, err = db.doGetAll(link, query)
+	if err != nil {
+		return
+	}
+	for _, m := range result {
+		for _, v := range m {
+			tables = append(tables, v.String())
+		}
+	}
 	return
 }