disable mixed usage of cypher & ngql

src/parser/parser.yy

@@ -377,7 +377,7 @@ static constexpr size_t kCommentLengthLimit = 256;
 %type <sentence> go_sentence match_sentence lookup_sentence find_path_sentence get_subgraph_sentence
 %type <sentence> group_by_sentence order_by_sentence limit_sentence
 %type <sentence> fetch_sentence fetch_vertices_sentence fetch_edges_sentence
-%type <sentence> set_sentence piped_sentence assignment_sentence
+%type <sentence> set_sentence piped_sentence assignment_sentence match_sentences
 %type <sentence> yield_sentence use_sentence
 
 %type <sentence> grant_sentence revoke_sentence
@@ -2777,7 +2777,6 @@ desc_zone_sentence
 traverse_sentence
     : L_PAREN set_sentence R_PAREN { $$ = $2; }
     | go_sentence { $$ = $1; }
-    | match_sentence { $$ = $1; }
     | lookup_sentence { $$ = $1; }
     | group_by_sentence { $$ = $1; }
     | order_by_sentence { $$ = $1; }
@@ -2816,6 +2815,20 @@ set_sentence
     | set_sentence KW_MINUS piped_sentence { $$ = new SetSentence($1, SetSentence::MINUS, $3); }
     ;
 
+match_sentences
+    : match_sentence { $$ = $1; }
+    | match_sentences KW_UNION KW_ALL match_sentence { $$ = new SetSentence($1, SetSentence::UNION, $4); }
+    | match_sentences KW_UNION match_sentence {
+        auto *s = new SetSentence($1, SetSentence::UNION, $3);
+        s->setDistinct();
+        $$ = s;
+    }
+    | match_sentences KW_UNION KW_DISTINCT match_sentence {
+        auto *s = new SetSentence($1, SetSentence::UNION, $4);
+        s->setDistinct();
+        $$ = s;
+    }
+
 assignment_sentence
     : VARIABLE ASSIGN set_sentence {
         $$ = new AssignmentSentence($1, $3);
@@ -3747,6 +3760,7 @@ sentence
     | set_sentence { $$ = $1; }
     | assignment_sentence { $$ = $1; }
     | mutate_sentence { $$ = $1; }
+    | match_sentences { $$ = $1; }
     ;
 
 seq_sentences

tests/tck/features/aggregate/Agg.feature

@@ -493,14 +493,14 @@ Feature: Basic Aggregate and GroupBy
       | 0     | 0   | NULL | NULL | NULL | NULL | NULL | NULL | NULL |
     When executing query:
       """
-      UNWIND [1,2,3] AS d RETURN d | YIELD 1 IN COLLECT($-.d) AS b
+      UNWIND [1,2,3] AS d RETURN  1 IN COLLECT(d) AS b
       """
     Then the result should be, in order, with relax comparison:
       | b    |
       | True |
     When executing query:
       """
-      UNWIND [1,2,3] AS d RETURN d | YIELD ANY(l IN COLLECT($-.d) WHERE l==1) AS b
+      UNWIND [1,2,3] AS d RETURN ANY(l IN COLLECT(d) WHERE l==1) AS b
       """
     Then the result should be, in order, with relax comparison:
       | b    |
@@ -607,7 +607,7 @@ Feature: Basic Aggregate and GroupBy
   Scenario: Distinct sum
     When executing query:
       """
-      UNWIND [1,2,3,3] AS d RETURN d | YIELD sum(distinct $-.d) AS sum
+      UNWIND [1,2,3,3] AS d RETURN sum(distinct d) AS sum
       """
     Then the result should be, in any order:
       | sum |

tests/tck/features/bugfix/MatchUsedInPipe.feature

@@ -9,7 +9,7 @@ Feature: Test match used in pipe
   Scenario: Order by after match
     When executing query:
       """
-      MATCH (n:player{name:"Tim Duncan"})-[]-(m) RETURN n,m | ORDER BY $-.m;
+      MATCH (n:player{name:"Tim Duncan"})-[]-(m) RETURN n,m  ORDER BY m;
       """
     Then the result should be, in any order, with relax comparison:
       | n              | m                     |
@@ -36,10 +36,12 @@ Feature: Test match used in pipe
   Scenario: Group after match
     When executing query:
       """
-      MATCH (n:player{name:"Tim Duncan"})-[]-(m) RETURN n,m | GROUP BY $-.n, $-.m YIELD $-.n, $-.m, count(*);
+      MATCH (n:player{name:"Tim Duncan"})-[]-(m)
+      WITH n as a, m as b
+      RETURN a, b, count(*)
       """
     Then the result should be, in any order, with relax comparison:
-      | $-.n           | $-.m                  | count(*) |
+      | a              | b                     | count(*) |
       | ("Tim Duncan") | ("Spurs")             | 1        |
       | ("Tim Duncan") | ("Shaquille O'Neal")  | 1        |
       | ("Tim Duncan") | ("Tiago Splitter")    | 1        |
@@ -55,7 +57,7 @@ Feature: Test match used in pipe
   Scenario: Top n after match
     When executing query:
       """
-      MATCH (n:player{name:"Tim Duncan"})-[]-(m) RETURN n,m | ORDER BY $-.m | LIMIT 10;
+      MATCH (n:player{name:"Tim Duncan"})-[]-(m) RETURN n,m ORDER BY m LIMIT 10;
       """
     Then the result should be, in any order, with relax comparison:
       | n              | m                     |
@@ -75,14 +77,61 @@ Feature: Test match used in pipe
       """
       MATCH (n:player{name:"Tim Duncan"})-[]-(m) RETURN n,m | GO FROM $-.n OVER *;
       """
-    Then a SemanticError should be raised at runtime: `$-.n', the srcs should be type of FIXED_STRING, but was`__EMPTY__'
+    Then a SyntaxError should be raised at runtime: syntax error near `| GO FRO'
 
   Scenario: Set op after match
     When executing query:
       """
-      MATCH (n:player{name:"Tim Duncan"}) RETURN n UNION MATCH (n:player{name:"Tony Parker"}) RETURN n
+      MATCH (n:player{name:"Tim Duncan"}) RETURN n
+      UNION
+      MATCH (n:player{name:"Tony Parker"}) RETURN n
       """
     Then the result should be, in any order, with relax comparison:
       | n               |
       | ("Tim Duncan")  |
       | ("Tony Parker") |
+    When executing query:
+      """
+      MATCH (n:player{name:"Tim Duncan"}) RETURN n
+      UNION ALL
+      MATCH (n:player)-[e:like]->() WHERE e.likeness>90 RETURN n
+      """
+    Then the result should be, in any order, with relax comparison:
+      | n                                                                                                           |
+      | ("Tim Duncan" :bachelor{name: "Tim Duncan", speciality: "psychology"} :player{age: 42, name: "Tim Duncan"}) |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Tony Parker" :player{age: 36, name: "Tony Parker"})                                                       |
+      | ("Tim Duncan" :bachelor{name: "Tim Duncan", speciality: "psychology"} :player{age: 42, name: "Tim Duncan"}) |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Tony Parker" :player{age: 36, name: "Tony Parker"})                                                       |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Shaquille O'Neal" :player{age: 47, name: "Shaquille O'Neal"})                                             |
+      | ("LeBron James" :player{age: 34, name: "LeBron James"})                                                     |
+      | ("Paul George" :player{age: 28, name: "Paul George"})                                                       |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Marc Gasol" :player{age: 34, name: "Marc Gasol"})                                                         |
+      | ("Tim Duncan" :bachelor{name: "Tim Duncan", speciality: "psychology"} :player{age: 42, name: "Tim Duncan"}) |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Paul Gasol" :player{age: 38, name: "Paul Gasol"})                                                         |
+    When executing query:
+      """
+      MATCH (n:player{name:"Tim Duncan"}) RETURN n
+      UNION DISTINCT
+      MATCH (n:player)-[e:like]->() WHERE e.likeness>90 RETURN n
+      """
+    Then the result should be, in any order, with relax comparison:
+      | n                                                                                                           |
+      | ("Tim Duncan" :bachelor{name: "Tim Duncan", speciality: "psychology"} :player{age: 42, name: "Tim Duncan"}) |
+      | ("Dejounte Murray" :player{age: 29, name: "Dejounte Murray"})                                               |
+      | ("Tony Parker" :player{age: 36, name: "Tony Parker"})                                                       |
+      | ("Shaquille O'Neal" :player{age: 47, name: "Shaquille O'Neal"})                                             |
+      | ("LeBron James" :player{age: 34, name: "LeBron James"})                                                     |
+      | ("Paul George" :player{age: 28, name: "Paul George"})                                                       |
+      | ("Marc Gasol" :player{age: 34, name: "Marc Gasol"})                                                         |
+      | ("Paul Gasol" :player{age: 38, name: "Paul Gasol"})                                                         |

tests/tck/features/expression/ListComprehension.feature

@@ -99,8 +99,8 @@ Feature: ListComprehension
     Given a graph with space named "nba"
     When executing query:
       """
-      UNWIND [1, 2, 3, 4, 5] AS a RETURN a * 2 AS x
-      | RETURN [n in collect($-.x) WHERE n > 5 | n + 1] AS l
+      UNWIND [1, 2, 3, 4, 5] AS a WITH a * 2 AS x
+      RETURN [n in collect(x) WHERE n > 5 | n + 1] AS l
       """
     Then the result should be, in any order:
       | l          |

tests/tck/features/expression/Predicate.feature

@@ -232,28 +232,28 @@ Feature: Predicate
     Given a graph with space named "nba"
     When executing query:
       """
-      UNWIND [1, 2, 3, 4, 5] AS a RETURN a * 2 AS x | RETURN any(n in collect($-.x) WHERE n > 5) AS myboo
+      UNWIND [1, 2, 3, 4, 5] AS a WITH a * 2 AS x  RETURN any(n in collect(x) WHERE n > 5) AS myboo
       """
     Then the result should be, in any order:
       | myboo |
       | true  |
     When executing query:
       """
-      UNWIND [1, 2, 3, 4, 5] AS a RETURN a * 2 AS x | RETURN All(n in collect($-.x) WHERE n > 5) AS myboo
+      UNWIND [1, 2, 3, 4, 5] AS a WITH a * 2 AS x  RETURN All(n in collect(x) WHERE n > 5) AS myboo
       """
     Then the result should be, in any order:
       | myboo |
       | false |
     When executing query:
       """
-      UNWIND [1, 2, 3, 4, 5] AS a RETURN a * 2 AS x | RETURN single(n in collect($-.x) WHERE n > 5) AS myboo
+      UNWIND [1, 2, 3, 4, 5] AS a WITH a * 2 AS x RETURN single(n in collect(x) WHERE n > 5) AS myboo
       """
     Then the result should be, in any order:
       | myboo |
       | false |
     When executing query:
       """
-      UNWIND [1, 2, 3, 4, 5] AS a RETURN a * 2 AS x | RETURN None(n in collect($-.x) WHERE n > 5) AS myboo
+      UNWIND [1, 2, 3, 4, 5] AS a WITH a * 2 AS x RETURN None(n in collect(x) WHERE n > 5) AS myboo
       """
     Then the result should be, in any order:
       | myboo |

tests/tck/features/expression/Reduce.feature

@@ -98,8 +98,8 @@ Feature: Reduce
     Given a graph with space named "nba"
     When executing query:
       """
-      UNWIND [1, 2, 3, 4, 5] AS a RETURN a * 2 AS x
-      | RETURN reduce(totalNum = 10, n in collect($-.x) | totalNum + n * 2) AS total
+      UNWIND [1, 2, 3, 4, 5] AS a WITH a * 2 AS x
+      RETURN reduce(totalNum = 10, n in collect(x) | totalNum + n * 2) AS total
       """
     Then the result should be, in any order:
       | total |

tests/tck/features/match/MatchById.IntVid.feature

@@ -904,15 +904,15 @@ Feature: Integer Vid Match By Id
     When executing query:
       """
       MATCH (:player{name: "Tim Duncan"})-[e:like*2..3]-(v)
-      RETURN 1 | YIELD COUNT(1)
+      RETURN COUNT(1)
       """
     Then the result should be, in any order, with relax comparison:
       | COUNT(1) |
       | 292      |
     When executing query:
       """
       MATCH (:player{name:"Tim Duncan"})-[e:serve|like*2..3]-(v)
-      RETURN 1 | YIELD COUNT(1)
+      RETURN COUNT(1)
       """
     Then the result should be, in any order, with relax comparison:
       | COUNT(1) |
@@ -934,8 +934,7 @@ Feature: Integer Vid Match By Id
       """
       MATCH (v1)-[:like]->(v2:player)-[:serve]->(v3)
       WHERE id(v2) == hash('Tim Duncan')
-      RETURN v1, v3 |
-      YIELD COUNT(*)
+      RETURN COUNT(*)
       """
     Then the result should be, in any order, with relax comparison:
       | COUNT(*) |
@@ -944,8 +943,7 @@ Feature: Integer Vid Match By Id
       """
       MATCH (v1)-[:like]->(v2:player)-[:serve]->(v3)
       WHERE id(v3) == hash('Spurs')
-      RETURN v1 |
-      YIELD COUNT(*)
+      RETURN COUNT(*)
       """
     Then the result should be, in any order, with relax comparison:
       | COUNT(*) |

tests/tck/features/match/MatchById.feature

@@ -904,15 +904,15 @@ Feature: Match By Id
     When executing query:
       """
       MATCH (:player{name: "Tim Duncan"})-[e:like*2..3]-(v)
-      RETURN 1 | YIELD count(1)
+      RETURN count(1)
       """
     Then the result should be, in any order, with relax comparison:
       | count(1) |
       | 292      |
     When executing query:
       """
       MATCH (:player{name:"Tim Duncan"})-[e:serve|like*2..3]-(v)
-      RETURN 1 | YIELD count(1)
+      RETURN count(1)
       """
     Then the result should be, in any order, with relax comparison:
       | count(1) |
@@ -934,8 +934,7 @@ Feature: Match By Id
       """
       MATCH (v1)-[:like]->(v2:player)-[:serve]->(v3)
       WHERE id(v2) == 'Tim Duncan'
-      RETURN v1, v3 |
-      YIELD COUNT(*)
+      RETURN COUNT(*)
       """
     Then the result should be, in any order, with relax comparison:
       | COUNT(*) |
@@ -944,8 +943,7 @@ Feature: Match By Id
       """
       MATCH (v1)-[:like]->(v2:player)-[:serve]->(v3)
       WHERE id(v3) == 'Spurs'
-      RETURN v1 |
-      YIELD COUNT(*)
+      RETURN COUNT(*)
       """
     Then the result should be, in any order, with relax comparison:
       | COUNT(*) |

tests/tck/features/match/MatchGroupBy.feature

@@ -137,15 +137,15 @@ Feature: Match GroupBy
       """
       MATCH(n:player)-[:like*2]->(m)-[:serve]->()
         WHERE n.age > 35
-        RETURN DISTINCT id(n) AS id,
+        WITH DISTINCT id(n) AS id,
                         count(n) AS count,
                         sum(floor(n.age)) AS sum,
                         max(m.age) AS max,
                         min(n.age) AS min,
                         avg(distinct n.age)+1 AS age,
                         labels(m) AS lb
               ORDER BY id, count, max, min
-        | YIELD count(*) AS count;
+        RETURN count(*) AS count;
       """
     Then the result should be, in order, with relax comparison:
       | count |
@@ -156,15 +156,15 @@ Feature: Match GroupBy
       """
       MATCH(n:player)-[:like*2]->(m)-[:serve]->()
         WHERE n.age > 35
-        RETURN DISTINCT id(n) AS id,
+        WITH DISTINCT id(n) AS id,
                         count(n) AS count,
                         sum(floor(n.age)) AS sum,
                         max(m.age) AS max,
                         min(n.age) AS min,
                         avg(distinct n.age)+1 AS age,
                         labels(m) AS lb
               ORDER BY id, count, max, min
-        | YIELD DISTINCT $-.min AS min, (INT)count(*) AS count;
+        RETURN DISTINCT min, (INT)count(*) AS count;
       """
     Then the result should be, in any order, with relax comparison:
       | min | count |