兼容pgsql，优化open字段的兼容性

src/main/java/cn/stylefeng/guns/modular/system/mapper/mapping/DeptMapper.xml

@@ -32,7 +32,7 @@
 		ELSE
 		'false'
 		END
-		) as 'open' from sys_dept
+		) as "open" from sys_dept
 	</select>
 
     <select id="list" resultType="map">

src/main/java/cn/stylefeng/guns/modular/system/mapper/mapping/DictMapper.xml

@@ -33,7 +33,7 @@
 		ELSE
 		'false'
 		END
-		) as 'open' from sys_dict where dict_type_id = #{dictTypeId}
+		) as "open" from sys_dict where dict_type_id = #{dictTypeId}
     </select>
 
     <select id="likeParentIds" resultType="cn.stylefeng.guns.modular.system.entity.Dict">

src/main/java/cn/stylefeng/guns/modular/system/mapper/mapping/MenuMapper.xml

@@ -70,7 +70,7 @@
         ELSE
         'false'
         END
-        ) as 'open'
+        ) as "open"
         FROM
         sys_menu m1
         LEFT join sys_menu m2 ON m1.pcode = m2.code
@@ -98,7 +98,7 @@
         ELSE
         'false'
         END
-        ) as 'open',
+        ) as "open",
         (
         CASE
         WHEN (m3.menu_id = 0 OR m3.menu_id

src/main/java/cn/stylefeng/guns/modular/system/mapper/mapping/RoleMapper.xml

@@ -38,7 +38,7 @@
     <select id="roleTreeList" resultType="cn.stylefeng.guns.core.common.node.ZTreeNode">
 		select role_id AS id, pid as pId,
 		name as name, (case when (pid = 0 or pid is null) then 'true'
-		else 'false' end) as 'open' from sys_role
+		else 'false' end) as "open" from sys_role
 	</select>
 
     <select id="roleTreeListByRoleId" resultType="cn.stylefeng.guns.core.common.node.ZTreeNode">
@@ -53,7 +53,7 @@
         ELSE
         'false'
         END
-        ) as 'open',
+        ) as "open",
         (
         CASE
         WHEN (r1.role_id = 0 OR r1.role_id IS NULL) THEN