diff --git a/.drone.yml b/.drone.yml
index 93fad07b..300c7841 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -110,6 +110,25 @@ steps:
     - push
     - pull_request
 
+- name: test-mariadb
+  image: golang:1.12
+  environment:
+    GO111MODULE: "on"
+    GOPROXY: "https://goproxy.cn"
+    TEST_MYSQL_HOST: mariadb
+    TEST_MYSQL_CHARSET: utf8mb4
+    TEST_MYSQL_DBNAME: xorm_test
+    TEST_MYSQL_USERNAME: root
+    TEST_MYSQL_PASSWORD:
+  commands:
+  - make test-mysql
+  - TEST_CACHE_ENABLE=true make test-mysql
+  - TEST_QUOTE_POLICY=reserved make test-mysql
+  when:
+    event:
+    - push
+    - pull_request
+
 - name: test-postgres
   pull: default
   image: golang:1.12
@@ -259,6 +278,18 @@ services:
     - tag
     - pull_request
 
+- name: mariadb
+  pull: default
+  image: mariadb:10.4
+  environment:
+    MYSQL_ALLOW_EMPTY_PASSWORD: yes
+    MYSQL_DATABASE: xorm_test
+  when:
+    event:
+    - push
+    - tag
+    - pull_request
+
 - name: pgsql
   pull: default
   image: postgres:9.5
diff --git a/dialects/mysql.go b/dialects/mysql.go
index a39cd925..32e18a17 100644
--- a/dialects/mysql.go
+++ b/dialects/mysql.go
@@ -307,8 +307,16 @@ func (db *mysql) AddColumnSQL(tableName string, col *schemas.Column) string {
 
 func (db *mysql) GetColumns(queryer core.Queryer, ctx context.Context, tableName string) ([]string, map[string]*schemas.Column, error) {
 	args := []interface{}{db.uri.DBName, tableName}
+	alreadyQuoted := "(INSTR(VERSION(), 'maria') > 0 && " +
+		"(SUBSTRING_INDEX(VERSION(), '.', 1) > 10 || " +
+		"(SUBSTRING_INDEX(VERSION(), '.', 1) = 10 && " +
+		"(SUBSTRING_INDEX(SUBSTRING(VERSION(), 4), '.', 1) > 2 || " +
+		"(SUBSTRING_INDEX(SUBSTRING(VERSION(), 4), '.', 1) = 2 && " +
+		"SUBSTRING_INDEX(SUBSTRING(VERSION(), 6), '-', 1) >= 7)))))"
 	s := "SELECT `COLUMN_NAME`, `IS_NULLABLE`, `COLUMN_DEFAULT`, `COLUMN_TYPE`," +
-		" `COLUMN_KEY`, `EXTRA`,`COLUMN_COMMENT` FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?" +
+		" `COLUMN_KEY`, `EXTRA`, `COLUMN_COMMENT`, " +
+		alreadyQuoted + " AS NEEDS_QUOTE " +
+		"FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?" +
 		" ORDER BY `COLUMNS`.ORDINAL_POSITION"
 
 	rows, err := queryer.QueryContext(ctx, s, args...)
@@ -324,8 +332,9 @@ func (db *mysql) GetColumns(queryer core.Queryer, ctx context.Context, tableName
 		col.Indexes = make(map[string]int)
 
 		var columnName, isNullable, colType, colKey, extra, comment string
+		var alreadyQuoted bool
 		var colDefault *string
-		err = rows.Scan(&columnName, &isNullable, &colDefault, &colType, &colKey, &extra, &comment)
+		err = rows.Scan(&columnName, &isNullable, &colDefault, &colType, &colKey, &extra, &comment, &alreadyQuoted)
 		if err != nil {
 			return nil, nil, err
 		}
@@ -335,7 +344,7 @@ func (db *mysql) GetColumns(queryer core.Queryer, ctx context.Context, tableName
 			col.Nullable = true
 		}
 
-		if colDefault != nil {
+		if colDefault != nil && (!alreadyQuoted || *colDefault != "NULL") {
 			col.Default = *colDefault
 			col.DefaultIsEmpty = false
 		} else {
@@ -404,9 +413,9 @@ func (db *mysql) GetColumns(queryer core.Queryer, ctx context.Context, tableName
 		}
 
 		if !col.DefaultIsEmpty {
-			if col.SQLType.IsText() {
+			if !alreadyQuoted && col.SQLType.IsText() {
 				col.Default = "'" + col.Default + "'"
-			} else if col.SQLType.IsTime() && col.Default != "CURRENT_TIMESTAMP" {
+			} else if col.SQLType.IsTime() && !alreadyQuoted && col.Default != "CURRENT_TIMESTAMP" {
 				col.Default = "'" + col.Default + "'"
 			}
 		}