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How can I access the table comment from a mysql table?

开发者 https://www.devze.com 2023-01-20 05:27 出处:网络
How can I get just the table comment from a mysql table?I tried the following, but they didn\'t work for various reasons.I want to figure out how to get just the string \'my comment\' (ideally via per

How can I get just the table comment from a mysql table? I tried the following, but they didn't work for various reasons. I want to figure out how to get just the string 'my comment' (ideally via perl =)

Any help?

-- Abbreviated output for convenience.
SHOW TABLE STATUS WHERE Name="foo"
+------+--------+---------+------------+------+----------------+---------------+
| Name | Engine | Version | Row_format | Rows | Create_options | Comment       |
+------+--------+---------+------------+------+---------开发者_Go百科-------+---------------+
| foo  | MyISAM |      10 | Fixed      |    0 |                | my comment    | 
+------+--------+---------+------------+------+----------------+---------------+

and

SHOW CREATE TABLE foo;
+-------+------------------------------------------------------------------------------+
| Table | Create Table                                                                 |
+-------+------------------------------------------------------------------------------+
| fooo  | CREATE TABLE `fooo` (`id` int(11) NOT NULL PRIMARY KEY) COMMENT='my comment' | 
+-------+------------------------------------------------------------------------------+


Based on the answer by OMG Ponies, but using INFORMATION_SCHEMA.TABLES instead of INFORMATION_SCHEMA.COLUMNS. When looking around on the web, all I could find was info on the columns' comments, but never on the table's. This is how to get a table's comment.

SELECT table_comment 
    FROM INFORMATION_SCHEMA.TABLES 
    WHERE table_schema='my_cool_database' 
        AND table_name='user_skill';
+--------------------------+
| table_comment            |
+--------------------------+
| my awesome comment       | 
+--------------------------+


If you don't want to have both database name and table name in the query, you can use :

SHOW TABLE STATUS WHERE Name='table_name';

and then pick up the "Comment" key of the result (you have to use an associative function like mysqli_fetch_assoc() in php).

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