Ваши SELECTa - это гиббери sh для mysql, поэтому они терпят неудачу
Увидимся, второй выбор, например
SELECT
Db as scopeuserhostSelect_priv
AS Selectlnsert_priv
AS lnsertUpdate_priv
AS UpdateDelete_priv
AS DeleteCreate_priv
AS CreateDrop_priv
AS DropGrant_priv
AS GrantReferences_priv
AS Referenceslndex_priv
AS IndexAlter_priv
AS AlterCreate_View_priv
AS Create ViewShow_view_priv
AS Show viewTrigger_priv
AS TriggerDelete_versioning_rows_priv
AS Delete versioning rows
FROM mysql.db
WHERE cadastro2 likedb
Запрос выглядит примерно так
SELECT `test12`.`id` as id,
`test12`.`usr_id` as usr_id,
`test12`.`category` as category,
`test12`.`comp_id` as comp_id,
`test12`.`position`as position,
`test12`.`description` as description,
`test12`.`country` as country,
`test12`.`state` as state,
`test12`.`city` as city,
`test12`.`start_date` as start_date,
`test12`.`end_date` end_date,
`test12`.`timestamp` as timestamo
FROM `testdb`.`test12`
WHERE `category` LIKE 'tesmeifyou can';
каждый столбец разделен запятой, для псевдонима столбца нужен фактический столбец, а LIKE необходимо сравнить строку
Здесь вы найдете дополнительную информацию о SELECT