Merge pull request #2557 from taozhi8833998/feat-except-mysql

feat: support except in mysql

Author: taozhi8833998

pegjs/mariadb.pegjs

@@ -30,6 +30,7 @@
     'ELSE': true,
     'END': true,
     'EXISTS': true,
+    'EXCEPT': true,
     'EXPLAIN': true,
 
     'FALSE': true,
@@ -296,6 +297,7 @@ set_op
   }
   / KW_MINUS { return 'minus' }
   / KW_INTERSECT { return 'intersect' }
+  / KW_EXCEPT { return 'except' }
 
 set_op_stmt
   = head:select_stmt tail:(__ set_op __ select_stmt)* __ ob: order_by_clause? __ l:limit_clause? {
@@ -3843,6 +3845,7 @@ KW_OVER     = "OVER"i     !ident_start
 KW_UNION    = "UNION"i    !ident_start
 KW_MINUS    = "MINUS"i    !ident_start
 KW_INTERSECT    = "INTERSECT"i    !ident_start
+KW_EXCEPT    = "EXCEPT"i    !ident_start
 KW_VALUES   = "VALUES"i   !ident_start
 KW_USING    = "USING"i    !ident_start
 

pegjs/mysql.pegjs

@@ -491,6 +491,7 @@ set_op
   }
   / KW_MINUS { return 'minus' }
   / KW_INTERSECT { return 'intersect' }
+  / KW_EXCEPT { return 'except' }
 
 set_op_stmt
   = head:select_stmt tail:(__ set_op __ select_stmt)* __ ob: order_by_clause? __ l:limit_clause? {
@@ -4126,6 +4127,7 @@ KW_OVER     = "OVER"i     !ident_start
 KW_UNION    = "UNION"i    !ident_start
 KW_MINUS    = "MINUS"i    !ident_start
 KW_INTERSECT    = "INTERSECT"i    !ident_start
+KW_EXCEPT    = "EXCEPT"i    !ident_start
 KW_VALUES   = "VALUES"i   !ident_start
 KW_USING    = "USING"i    !ident_start
 

test/mysql-mariadb.spec.js

@@ -1333,6 +1333,13 @@ describe('mysql', () => {
           "WITH `T` AS (VALUES ROW('foobar')) SELECT * FROM `T`"
         ]
       },
+      {
+        title: 'except clause',
+        sql: [
+          "SELECT * FROM T1 EXCEPT SELECT * FROM T2",
+          "SELECT * FROM `T1` EXCEPT SELECT * FROM `T2`"
+        ]
+      },
     ]
     SQL_LIST.forEach(sqlInfo => {
       const { title, sql } = sqlInfo