public function testGetExplainPlanQuery()
 {
     $db = new DBPostgres();
     $query = 'SELECT B.* FROM (SELECT A.*, rownum AS PROPEL_ROWNUM FROM (SELECT book.ID AS ORA_COL_ALIAS_0, book.TITLE AS ORA_COL_ALIAS_1, book.ISBN AS ORA_COL_ALIAS_2, book.PRICE AS ORA_COL_ALIAS_3, book.PUBLISHER_ID AS ORA_COL_ALIAS_4, book.AUTHOR_ID AS ORA_COL_ALIAS_5, author.ID AS ORA_COL_ALIAS_6, author.FIRST_NAME AS ORA_COL_ALIAS_7, author.LAST_NAME AS ORA_COL_ALIAS_8, author.EMAIL AS ORA_COL_ALIAS_9, author.AGE AS ORA_COL_ALIAS_10, book.PRICE AS BOOK_PRICE FROM book, author) A ) B WHERE  B.PROPEL_ROWNUM <= 1';
     $this->assertEquals('EXPLAIN SELECT B.* FROM (SELECT A.*, rownum AS PROPEL_ROWNUM FROM (SELECT book.ID AS ORA_COL_ALIAS_0, book.TITLE AS ORA_COL_ALIAS_1, book.ISBN AS ORA_COL_ALIAS_2, book.PRICE AS ORA_COL_ALIAS_3, book.PUBLISHER_ID AS ORA_COL_ALIAS_4, book.AUTHOR_ID AS ORA_COL_ALIAS_5, author.ID AS ORA_COL_ALIAS_6, author.FIRST_NAME AS ORA_COL_ALIAS_7, author.LAST_NAME AS ORA_COL_ALIAS_8, author.EMAIL AS ORA_COL_ALIAS_9, author.AGE AS ORA_COL_ALIAS_10, book.PRICE AS BOOK_PRICE FROM book, author) A ) B WHERE  B.PROPEL_ROWNUM <= 1', $db->getExplainPlanQuery($query), 'getExplainPlanQuery() returns a SQL Explain query');
 }
 public function testQuotingIdentifiers()
 {
     $db = new DBPostgres();
     $this->assertEquals('"Book ISBN"', $db->quoteIdentifier('Book ISBN'));
 }