Fix bad alias recognition on SELECT…OVER statements.

Author: niconoe-

src/Components/Expression.php

@@ -367,7 +367,8 @@ public static function parse(Parser $parser, TokensList $list, array $options =
                     && (($prev[1]->type === Token::TYPE_STRING)
                         || ($prev[1]->type === Token::TYPE_SYMBOL
                             && ! ($prev[1]->flags & Token::FLAG_SYMBOL_VARIABLE))
-                        || ($prev[1]->type === Token::TYPE_NONE))
+                        || ($prev[1]->type === Token::TYPE_NONE
+                            && $prev[1]->token !== 'OVER'))
                 ) {
                     if (! empty($ret->alias)) {
                         $parser->error('An alias was previously found.', $token);

tests/data/parser/parseSelectAggregateWithPartitionAndAlias.out

@@ -275,8 +275,8 @@
                         "database": null,
                         "table": null,
                         "column": null,
-                        "expr": "COUNT(*) (PARTITION BY `REGION`)",
-                        "alias": "OVER",
+                        "expr": "COUNT(*) OVER(PARTITION BY `REGION`)",
+                        "alias": "count(REGION)",
                         "function": "COUNT",
                         "subquery": null
                     }
@@ -320,28 +320,6 @@
     },
     "errors": {
         "lexer": [],
-        "parser": [
-            [
-                "An alias was previously found.",
-                {
-                    "@type": "@21"
-                },
-                0
-            ],
-            [
-                "An alias was expected.",
-                {
-                    "@type": "@20"
-                },
-                0
-            ],
-            [
-                "Unexpected token.",
-                {
-                    "@type": "@21"
-                },
-                0
-            ]
-        ]
+        "parser": []
     }
 }