摘要： $sql = " SELECT COLUMNS.TABLE_NAME, COLUMNS.COLUMN_DEFAULT, COLUMNS.ORDINAL_POSITION, COLUMNS.COLUMN_NAME, COLUMNS.COLUMN_TYPE, COLUMNS.COLUMN_KEY, COLUMNS.EXTRA, COLUMNS.COLUMN_COMMENT, TABLES.TABLE_COMMENT FROM information_schema.COLUMNS LEFT JOIN information_s... 阅读全文