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Get database schema with one query?

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By User


Basically I want to get the table names, and the field names for each table from the current database that is connected, nothing else.



Is this possible?



I know that SHOW TABLES FROM my_database gets you the table names, and SHOW COLUMNS FROM my_table will get you the fields, but that's at least [1 x # of tables] queries and I get more information that I want :)


Source: Tips4all, CCNA FINAL EXAM
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Comments

  1. UserMay 10, 2012 at 3:09 AM

    The INFORMATION_SCHEMA.COLUMNS table has what you're asking for.

    SELECT table_name, column_name
    FROM INFORMATION_SCHEMA.COLUMNS
    WHERE table_schema = 'YourDBName'
    ORDER BY table_name, ordinal_position

    ReplyDelete
  2. UserMay 10, 2012 at 3:09 AM

    SELECT *
    FROM information_schema.tables t
    JOIN information_schema.columns c ON t.TABLE_NAME = c.TABLE_NAME
    AND t.TABLE_CATALOG=c.TABLE_CATALOG
    AND t.TABLE_SCHEMA=c.TABLE_SCHEMA


    works for SQLSERVER 2005. The column names might be different for MySQL (I assume that's what you're using), but the concept is the same.

    ReplyDelete

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