| | 2346 | // Set the unique and index_type values. |
| | 2347 | $new_indices_ary[$new_indices_ary_key]['unique'] = (false !== strpos($index_type,'PRIMARY') || false !== strpos($index_type,'UNIQUE') ) ? true : false; |
| | 2348 | |
| | 2349 | // SHOW INDEX FROM returns BTREE, FULLTEXT, HASH or RTREE. SPATIAL and FULLTEXT should be specified, and MySQL uses BTREE unless HASH is specified explicitly. |
| | 2350 | if ( 'FULLTEXT KEY' === $index_type ) { |
| | 2351 | $new_indices_ary[$new_indices_ary_key]['index_type'] = 'FULLTEXT'; |
| | 2352 | } else if ( 'SPATIAL' === $index_type ) { |
| | 2353 | $new_indices_ary[$new_indices_ary_key]['index_type'] = 'RTREE'; |
| | 2354 | } else if ( false !== stripos( $fld, 'USING HASH' ) ) { |
| | 2355 | $new_indices_ary[$new_indices_ary_key]['index_type'] = 'HASH'; |
| | 2356 | } else { |
| | 2357 | $new_indices_ary[$new_indices_ary_key]['index_type'] = 'BTREE'; |
| | 2358 | } |
| | 2359 | |
| | 2385 | /** |
| | 2386 | * If the new AUTO_INCREMENT settings don't match the existing ones, change the column. |
| | 2387 | * |
| | 2388 | * Note: We need to do this first, because adding AI to an existing column will break things |
| | 2389 | */ |
| | 2390 | $old_has_ai = 'auto_increment' === $tablefield->Extra; |
| | 2391 | $new_has_ai = !(false === strpos( strtolower( $cfields[ $tablefield_field_lowercased ] ), 'auto_increment' )); |
| | 2392 | if ( $old_has_ai !== $new_has_ai ) { |
| | 2393 | $iqueries[] = "ALTER TABLE {$table} CHANGE COLUMN `{$tablefield->Field}` " . $cfields[ $tablefield_field_lowercased ]; |
| | 2394 | $use_or_not = 'auto_increment' === $tablefield->Extra ? 'not use' : 'use'; |
| | 2395 | $for_update[] = "Set column {$tablefield->Field} to {$use_or_not} AUTO_INCREMENT"; |
| | 2396 | } |
| | 2397 | |
| | 2414 | /** |
| | 2415 | * If we're changing an AI column, we're going to drop and re-add the AI designation |
| | 2416 | * so that if we're also modifying an index, we won't trip up that process. |
| | 2417 | */ |
| | 2418 | if ( $new_has_ai ) { |
| | 2419 | // Remove the AI designation for now. |
| | 2420 | $cfields[ $tablefield_field_lowercased ] = str_ireplace( 'auto_increment', '', $cfields[ $tablefield_field_lowercased ] ); |
| | 2421 | |
| | 2422 | // Then re-add it afterwards. |
| | 2423 | $iqueries[] = "ALTER TABLE {$table} MODIFY COLUMN {$cfields[ $tablefield_field_lowercased ]} AUTO_INCREMENT"; |
| | 2424 | $for_update[] = "Set column {$tablefield->Field} to use AUTO_INCREMENT"; |
| | 2425 | } |
| | 2426 | |
| | 2452 | /** |
| | 2453 | * A statement tries to add an AUTO_INCREMENT column to an existing table |
| | 2454 | * will trigger an error because an AUTO_INCREMENT column must be indexed. |
| | 2455 | * |
| | 2456 | * We're going to split out the AUTO_INCREMENT piece to handle after we've |
| | 2457 | * added the index. |
| | 2458 | */ |
| | 2459 | if ( false !== strpos( strtolower( $fielddef ), 'auto_increment' ) ) { |
| | 2460 | $fielddef = str_ireplace( 'auto_increment', '', $fielddef ); |
| | 2461 | |
| | 2462 | /** |
| | 2463 | * We want to add the AUTO_INCREMENT properties to the column after all other columns, |
| | 2464 | * have |
| | 2465 | * so we add it to $iqueries which run after $cqueries. |
| | 2466 | */ |
| | 2467 | $iqueries[] = "ALTER TABLE {$table} MODIFY COLUMN {$fielddef} AUTO_INCREMENT"; |
| | 2468 | $for_update[] = "Set column {$fieldname} to use AUTO_INCREMENT"; |
| | 2469 | } |
| | 2470 | |
| | 2496 | // Since we don't drop existing indexes unless we have to, we don't need to do this unless we are significantly changing an index. |
| | 2497 | if ( isset( $new_indices_ary[ $index_name ] ) ) { |
| | 2498 | $drop_this_index = false; |
| | 2499 | if ( $index_data['unique'] !== $new_indices_ary[$index_name]['unique'] ) { // An index which wasn't unique but now is, or vice-versa. |
| | 2500 | $drop_this_index = true; |
| | 2501 | } else if ( null !== $new_indices_ary[$index_name]['index_type'] && $new_indices_ary[$index_name]['index_type'] !== $index_data['index_type'] ) { // If the user has specified an index method ( FULLTEXT, HASH or BTREE). |
| | 2502 | $drop_this_index = true; |
| | 2503 | } else if ( count( $new_indices_ary[$index_name]['columns'] ) !== count( $index_data['columns'] ) ) { // If there are a different number of columns in the index. |
| | 2504 | $drop_this_index = true; |
| | 2505 | } else { |
| | 2506 | foreach( $new_indices_ary[$index_name]['columns'] as $column_idx => $new_column ) { |
| | 2507 | if ( !array_key_exists($column_idx,$index_data['columns']) || $index_data['columns'][$column_idx]['fieldname'] !== $new_column['fieldname'] ) { // If the columns are in a different order. |
| | 2508 | $drop_this_index = true; |
| | 2509 | break; |
| | 2510 | } |
| | 2511 | } |
| | 2512 | } |
| | 2513 | |
| | 2514 | if ( $drop_this_index ) { |
| | 2515 | if ( 'primary' === $index_name ){ |
| | 2516 | |
| | 2517 | // If the column is an AUTO_INCREMENT column, we need to drop the AUTO_INCREMENT designation before dropping the index. |
| | 2518 | foreach( $tablefields as $tablefield ) { |
| | 2519 | if ( 'auto_increment' === $tablefield->Extra && 'PRI' === $tablefield->Key ) { |
| | 2520 | |
| | 2521 | $column_already_altered = false; |
| | 2522 | foreach( $cqueries as $k => $maybe_alter ) { |
| | 2523 | // However, if we are already altering the column, we won't touch it here, since we would undo any type or sub-type changes. |
| | 2524 | if ( false !== strpos( $maybe_alter, 'ALTER TABLE' ) && ( false !== strpos( $maybe_alter, '`' . $tablefield->Field . '`' ) || false !== strpos( $maybe_alter, ' ' . $tablefield->Field . ' ' ) ) ) { |
| | 2525 | $column_already_altered = true; |
| | 2526 | } |
| | 2527 | } |
| | 2528 | |
| | 2529 | if ( !$column_already_altered ) { |
| | 2530 | $cqueries[] = "ALTER TABLE {$table} MODIFY {$tablefield->Field} {$tablefield->Type} NOT NULL;"; |
| | 2531 | $for_update[] = 'Removed auto_increment from ' . $tablefield->Field . ' in order to remove primary key'; |
| | 2532 | } |
| | 2533 | } |
| | 2534 | } |
| | 2535 | |
| | 2536 | $cqueries[] = "ALTER TABLE {$table} DROP PRIMARY KEY"; |
| | 2537 | $for_update[] = "Dropped old primary key from {$table}"; |
| | 2538 | } else { |
| | 2539 | $cqueries[] = "DROP INDEX {$index_name} ON {$table}"; |
| | 2540 | $for_update[] = 'Removed index ' . $index_name . ' from ' . $table; |
| | 2541 | } |
| | 2542 | |
| | 2543 | unset( $index_ary[$index_name] ); |
| | 2544 | continue; |
| | 2545 | } |
| | 2546 | } |
| | 2547 | |