a:2:{s:6:"SELECT";a:1:{i:0;a:6:{s:9:"expr_type";s:6:"colref";s:5:"alias";b:0;s:9:"base_expr";s:1:"*";s:8:"sub_tree";b:0;s:5:"delim";b:0;s:8:"position";i:7;}}s:4:"FROM";a:2:{i:0;a:9:{s:9:"expr_type";s:16:"table_expression";s:5:"alias";b:0;s:5:"hints";b:0;s:9:"join_type";s:4:"JOIN";s:8:"ref_type";b:0;s:10:"ref_clause";b:0;s:9:"base_expr";s:28:"t1 LEFT JOIN t2 ON t1.a=t2.a";s:8:"sub_tree";a:2:{i:0;a:11:{s:9:"expr_type";s:5:"table";s:5:"table";s:2:"t1";s:9:"no_quotes";a:2:{s:5:"delim";b:0;s:5:"parts";a:1:{i:0;s:2:"t1";}}s:5:"alias";b:0;s:5:"hints";b:0;s:9:"join_type";s:4:"JOIN";s:8:"ref_type";b:0;s:10:"ref_clause";b:0;s:9:"base_expr";s:2:"t1";s:8:"sub_tree";b:0;s:8:"position";i:27;}i:1;a:11:{s:9:"expr_type";s:5:"table";s:5:"table";s:2:"t2";s:9:"no_quotes";a:2:{s:5:"delim";b:0;s:5:"parts";a:1:{i:0;s:2:"t2";}}s:5:"alias";b:0;s:5:"hints";b:0;s:9:"join_type";s:4:"LEFT";s:8:"ref_type";s:2:"ON";s:10:"ref_clause";a:3:{i:0;a:5:{s:9:"expr_type";s:6:"colref";s:9:"base_expr";s:4:"t1.a";s:9:"no_quotes";a:2:{s:5:"delim";s:1:".";s:5:"parts";a:2:{i:0;s:2:"t1";i:1;s:1:"a";}}s:8:"sub_tree";b:0;s:8:"position";i:46;}i:1;a:4:{s:9:"expr_type";s:8:"operator";s:9:"base_expr";s:1:"=";s:8:"sub_tree";b:0;s:8:"position";i:50;}i:2;a:5:{s:9:"expr_type";s:6:"colref";s:9:"base_expr";s:4:"t2.a";s:9:"no_quotes";a:2:{s:5:"delim";s:1:".";s:5:"parts";a:2:{i:0;s:2:"t2";i:1;s:1:"a";}}s:8:"sub_tree";b:0;s:8:"position";i:51;}}s:9:"base_expr";s:15:"t2 ON t1.a=t2.a";s:8:"sub_tree";b:0;s:8:"position";i:40;}}s:8:"position";i:27;}i:1;a:11:{s:9:"expr_type";s:5:"table";s:5:"table";s:2:"t3";s:9:"no_quotes";a:2:{s:5:"delim";b:0;s:5:"parts";a:1:{i:0;s:2:"t3";}}s:5:"alias";b:0;s:5:"hints";b:0;s:9:"join_type";s:4:"LEFT";s:8:"ref_type";s:2:"ON";s:10:"ref_clause";a:7:{i:0;a:5:{s:9:"expr_type";s:6:"colref";s:9:"base_expr";s:4:"t2.b";s:9:"no_quotes";a:2:{s:5:"delim";s:1:".";s:5:"parts";a:2:{i:0;s:2:"t2";i:1;s:1:"b";}}s:8:"sub_tree";b:0;s:8:"position";i:107;}i:1;a:4:{s:9:"expr_type";s:8:"operator";s:9:"base_expr";s:1:"=";s:8:"sub_tree";b:0;s:8:"position";i:111;}i:2;a:5:{s:9:"expr_type";s:6:"colref";s:9:"base_expr";s:4:"t3.b";s:9:"no_quotes";a:2:{s:5:"delim";s:1:".";s:5:"parts";a:2:{i:0;s:2:"t3";i:1;s:1:"b";}}s:8:"sub_tree";b:0;s:8:"position";i:112;}i:3;a:4:{s:9:"expr_type";s:8:"operator";s:9:"base_expr";s:2:"OR";s:8:"sub_tree";b:0;s:8:"position";i:117;}i:4;a:5:{s:9:"expr_type";s:6:"colref";s:9:"base_expr";s:4:"t2.b";s:9:"no_quotes";a:2:{s:5:"delim";s:1:".";s:5:"parts";a:2:{i:0;s:2:"t2";i:1;s:1:"b";}}s:8:"sub_tree";b:0;s:8:"position";i:120;}i:5;a:4:{s:9:"expr_type";s:8:"operator";s:9:"base_expr";s:2:"IS";s:8:"sub_tree";b:0;s:8:"position";i:125;}i:6;a:4:{s:9:"expr_type";s:5:"const";s:9:"base_expr";s:4:"NULL";s:8:"sub_tree";b:0;s:8:"position";i:128;}}s:9:"base_expr";s:48:"t3
ON t2.b=t3.b OR t2.b IS NULL";s:8:"sub_tree";b:0;s:8:"position";i:84;}}}
|