Merge pull request #11564 from udan11/QA_4_5

Partial fix for #11558.

libraries/sql-parser/src/Components/Condition.php

@@ -40,6 +40,7 @@ class Condition extends Component
     public static $OPERATORS = array(
         'AND'                           => 1,
         'BETWEEN'                       => 1,
+        'EXISTS'                        => 1,
         'IN'                            => 1,
         'IS'                            => 1,
         'LIKE'                          => 1,

libraries/sql-parser/src/Components/PartitionDefinition.php

@@ -10,7 +10,6 @@
  */
 namespace SqlParser\Components;
 
-use SqlParser\Context;
 use SqlParser\Component;
 use SqlParser\Parser;
 use SqlParser\Token;

libraries/sql-parser/src/Context.php

@@ -524,5 +524,5 @@ abstract class Context
     }
 }
 
-// Initialing the default context.
+// Initializing the default context.
 Context::load();

libraries/sql-parser/src/Lexer.php

@@ -171,7 +171,7 @@ class Lexer
      */
     public static function getTokens($str, $strict = false, $delimiter = null)
     {
-        $lexer = new Lexer($str);
+        $lexer = new Lexer($str, $strict, $delimiter);
         return $lexer->list;
     }
 

libraries/sql-parser/src/Statement.php

@@ -108,6 +108,20 @@ abstract class Statement
          */
         $query = '';
 
+        /**
+         * Clauses which were built already.
+         *
+         * It is required to keep track of built clauses because some fields,
+         * for example `join` is used by multiple clauses (`JOIN`, `LEFT JOIN`,
+         * `LEFT OUTER JOIN`, etc.). The same happens for `VALUE` and `VALUES`.
+         *
+         * A clause is considered built just after fields' value
+         * (`$this->field`) was used in building.
+         *
+         * @var array
+         */
+        $built = array();
+
         foreach (static::$CLAUSES as $clause) {
             /**
              * The name of the clause.
@@ -144,6 +158,15 @@ abstract class Statement
                 continue;
             }
 
+            // Checking if this field was already built.
+            if ($type & 1) {
+                if (!empty($built[$field])) {
+                    continue;
+                }
+
+                $built[$field] = true;
+            }
+
             // Checking if the name of the clause should be added.
             if ($type & 2) {
                 $query .= $name . ' ';