feat(flink): add queryStatement

src/grammar/flinksql/FlinkSqlParser.g4

@@ -129,20 +129,25 @@ dropFunction
 // Select statements
 
 queryStatement
-    : valuesDefinition
+    : valuesDefinition | selectStatements queryOrderByDefinition? queryLimitDefinition? queryOffsetDefinition? queryFetchDefinition?
-    | (
+    ;
-        selectStatement
+
+selectStatements
+    : selectStatement
     | selectWithoutFromDefinition
     // | queryStatement UNION ALL? queryStatement
     // | queryStatement EXCEPT queryStatement
     // | queryStatement INTERSECT queryStatement
-    ) queryOrderByDefinition? queryLimitDefinition? queryOffsetDefinition? queryFetchDefinition?
     ;
 
 selectStatement
     : SELECT (ALL | DISTINCT)? 
     (ASTERISK_SIGN | projectItemDefinition (COMMA projectItemDefinition)*)
     FROM tableExpression
+    (WHERE booleanExpression)?
+    (GROUP BY groupItemDefinition (COMMA groupItemDefinition)*)
+    (HAVING booleanExpression)?
+    // (WINDOW windowName AS windowSpec (COMMA windowName AS windowSpec)*)?
     ;
 
 projectItemDefinition // expression (AS? columnAlias)? | tableAlias . *
@@ -150,13 +155,62 @@ projectItemDefinition // expression (AS? columnAlias)? | tableAlias . *
     ;
 
 tableExpression
+    : tableReference (COMMA tableReference)*
+    | tableExpression NATURAL? (LEFT | RIGHT | FULL)? JOIN tableExpression joinCondition?
+    ;
+
+tableReference
+    : // tablePrimary matchRecognize? (AS? alias (LR_BRACKET columnAlias (COMMA columnAlias)* RR_BRACKET)?)?
+    ;
+
+// tablePrimary
+//     : TABLE? uid dynamicTableOptions?
+//     | LATERAL TABLE LR_BRACKET uid LR_BRACKET expression (COMMA expression)* RR_BRACKET RR_BRACKET
+//     | UNNEST LR_BRACKET expression RR_BRACKET
+//     ;
+
+
+joinCondition // ON booleanExpression | USING LR_BRACKET column (COMMA column)* RR_BRACKET
     :
     ;
 
-selectWithoutFromDefinition
+booleanExpression
     :
     ;
 
+groupItemDefinition
+    : expression
+    | LR_BRACKET RR_BRACKET
+    | LR_BRACKET expression (COMMA expression)* RR_BRACKET
+    | CUBE LR_BRACKET expression (COMMA expression)* RR_BRACKET
+    | ROLLUP LR_BRACKET expression (COMMA expression)* RR_BRACKET
+    | GROUPING SETS LR_BRACKET groupItemDefinition (COMMA groupItemDefinition)* RR_BRACKET
+    ;
+
+// windowRef
+//     : windowName | windowSpec
+//     ;
+
+// windowSpec
+//     : windowName 
+//     LR_BRACKET
+//         (ORDER BY orderItem (COMMA orderItem)*)?
+//         (PARTITION BY expression (COMMA expression)*)
+//         (
+//             RANGE numericOrIntervalExpression PRECEDING
+//             | ROWS numericExpression PRECEDING
+//         )?
+//     RR_BRACKET
+//     ;
+
+selectWithoutFromDefinition
+    : SELECT (ALL | DISTINCT)? (ASTERISK_SIGN | projectItem (COMMA projectItem)*)
+    ;
+
+projectItem
+    : // expression (AS? columnAlias)? | tableAlias . *
+    ;
+
 queryOrderByDefinition
     : ORDER BY orderItemDefition (COMMA orderItemDefition)*
     ;
@@ -234,3 +288,7 @@ ifExists
 keyValueDefinition
     : DOUBLE_QUOTE_ID EQUAL_SYMBOL DOUBLE_QUOTE_ID
     ;
+
+expression
+    :
+    ;