在不使用“select from"的情况下检查 MySQL 表是否存在;句法?
有没有一种方法可以检查表是否存在而无需从中选择和检查值?
Is there a way to check if a table exists without selecting and checking values from it?
也就是说,我知道我可以去 SELECT testcol FROM testtable
并检查返回的字段数,但似乎必须有更直接/优雅的方法来做到这一点.
That is, I know I can go SELECT testcol FROM testtable
and check the count of fields returned, but it seems there must be a more direct / elegant way to do it.
推荐答案
如果要正确,请使用 INFORMATION_SCHEMA.
If you want to be correct, use INFORMATION_SCHEMA.
SELECT *
FROM information_schema.tables
WHERE table_schema = 'yourdb'
AND table_name = 'testtable'
LIMIT 1;
或者,您可以使用 SHOW TABLES
SHOW TABLES LIKE 'yourtable';
如果结果集中有一行,则表存在.
If there is a row in the resultset, table exists.
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