diff --git a/src/Statement.php b/src/Statement.php index dc5f9453e..50b128592 100644 --- a/src/Statement.php +++ b/src/Statement.php @@ -451,16 +451,26 @@ public function validateClauseOrder($parser, $list) /** * For tracking JOIN clauses in a query - * 0 - JOIN not found till now - * 1 - JOIN has been found - * 2 - A Non-JOIN clause has been found - * after a previously found JOIN clause. + * = 0 - JOIN not found till now + * > 0 - Index of first JOIN clause in the statement * * @var int */ - $joinStart = 0; + $minJoin = 0; + + /** + * For tracking JOIN clauses in a query + * = 0 - JOIN not found till now + * > 0 - Index of last JOIN clause + * (which appears together with other JOINs) + * in the statement + * + * @var int + */ + $maxJoin = 0; $error = 0; + $lastIdx = 0; foreach ($clauses as $clauseType => $index) { $clauseStartIdx = Utils\Query::getClauseStartOffset( $this, @@ -470,17 +480,19 @@ public function validateClauseOrder($parser, $list) // Handle ordering of Multiple Joins in a query if ($clauseStartIdx != -1) { - if ($joinStart == 0 && stripos($clauseType, 'JOIN') !== false) { - $joinStart = 1; - } elseif ($joinStart == 1 && stripos($clauseType, 'JOIN') === false) { - $joinStart = 2; - } elseif ($joinStart == 2 && stripos($clauseType, 'JOIN') !== false) { + if ($minJoin === 0 && stripos($clauseType, 'JOIN')) { + // First JOIN clause is detected + $minJoin = $maxJoin = $clauseStartIdx; + } elseif ($minJoin !== 0 && ! stripos($clauseType, 'JOIN')) { + // After a previous JOIN clause, a non-JOIN clause has been detected + $maxJoin = $lastIdx; + } elseif ($maxJoin < $clauseStartIdx && stripos($clauseType, 'JOIN')) { $error = 1; } } if ($clauseStartIdx != -1 && $clauseStartIdx < $minIdx) { - if ($joinStart == 0 || ($joinStart == 2 && $error = 1)) { + if ($minJoin === 0 || $error === 1) { $token = $list->tokens[$clauseStartIdx]; $parser->error( 'Unexpected ordering of clauses.', @@ -493,6 +505,8 @@ public function validateClauseOrder($parser, $list) } elseif ($clauseStartIdx != -1) { $minIdx = $clauseStartIdx; } + + $lastIdx = ($clauseStartIdx !== -1) ? $clauseStartIdx : $lastIdx; } return true; diff --git a/tests/Parser/SelectStatementTest.php b/tests/Parser/SelectStatementTest.php index 5be345f30..42fb955c7 100644 --- a/tests/Parser/SelectStatementTest.php +++ b/tests/Parser/SelectStatementTest.php @@ -63,6 +63,7 @@ public function testSelectProvider() array('parser/parseSelectJoinMultiple'), array('parser/parseSelectJoinMultiple2'), array('parser/parseSelectWrongOrder'), + array('parser/parseSelectWrongOrder2'), array('parser/parseSelectEndOptions1'), array('parser/parseSelectEndOptions2'), array('parser/parseSelectEndOptionsErr'), diff --git a/tests/data/parser/parseSelectWrongOrder2.in b/tests/data/parser/parseSelectWrongOrder2.in new file mode 100644 index 000000000..3a000ec65 --- /dev/null +++ b/tests/data/parser/parseSelectWrongOrder2.in @@ -0,0 +1 @@ +SELECT DISTINCT * FROM tbl1 INNER JOIN tbl2 ON id1 = id2 WHERE 1=1 LEFT OUTER 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