Useful stuff #1

oracle

This is a new serie of posts I always told my self to start it. This reminder is about useful Oracle queries, unix commands and so…

The first one is an Oracle select command to query foreign key name, column, referenced table and column.


SELECT
c_list.CONSTRAINT_NAME as FK_NAME,
substr(c_src.COLUMN_NAME, 1, 20) as SRC_COLUMN,
c_dest.TABLE_NAME as DEST_TABLE,
substr(c_dest.COLUMN_NAME, 1, 20) as DEST_COLUMN
FROM ALL_CONSTRAINTS c_list, ALL_CONS_COLUMNS c_src, ALL_CONS_COLUMNS c_dest
WHERE c_list.CONSTRAINT_NAME = c_src.CONSTRAINT_NAME
AND c_list.R_CONSTRAINT_NAME = c_dest.CONSTRAINT_NAME
AND c_list.CONSTRAINT_TYPE = 'R'
AND c_src.TABLE_NAME = '<your-table-here>'
GROUP BY c_list.CONSTRAINT_NAME, c_src.TABLE_NAME,
c_src.COLUMN_NAME, c_dest.TABLE_NAME, c_dest.COLUMN_NAME;
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About Salem Ben Afia

Big Data & Java developer

Posted on January 29, 2013, in Database and tagged . Bookmark the permalink. Leave a comment.

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