Example:
dbadmin=> \dS primary_keys
List of tables
Schema | Name | Kind | Description | Comment
-----------+--------------+--------+-------------------------+---------
v_catalog | primary_keys | system | Primary key information |
(1 row)
dbadmin=> SELECT column_name, ordinal_position
dbadmin-> FROM primary_keys
dbadmin-> WHERE table_name = 'test_table';
column_name | ordinal_position
-------------+------------------
a | 1
b | 2
c | 3
d | 4
e | 5
(5 rows)
You can use the LISTAGG function to group the columns of a composite key into a single record!
dbadmin=> SELECT listagg(column_name) pk
dbadmin-> FROM primary_keys
dbadmin-> WHERE table_name = 'test_table';
pk
-----------
a,b,c,d,e
(1 row)
Helpful Link: https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/SQLReferenceManual/SystemTables/CATALOG/PRIMARY_KEYS.htm
About the Author
James Knicely
Vertica Field Chief Technologist
I've had the privilege of working with many database technologies in my career. But after being introduced to Vertica in May of 2011 as a client, I was hooked on the new technology after witnessing a query run in milliseconds that had previously ran for hours on the legacy database we had in place. It was then that I knew I wanted to eventually join the Vertica team, and 4 years later I did! I am currently a Vertica evangelist and am ready to help you get on board! Please feel free to reach out to me with any questions you have about Vertica and make sure to follow my Vertica Quick Tips!
