When you export a database view, Vertica includes the CREATE VIEW DDL in the output. But what if you want the DDL to be CREATE OR REPLACE VIEW?
You can make that change with the Linux sed command.
Example:
dbadmin=> CREATE TABLE base_table (c1 INT, c2 INT, c3 INT);
CREATE TABLE
dbadmin=> CREATE VIEW base_table_vw AS SELECT * FROM base_table;
CREATE VIEW
dbadmin=> SELECT export_objects('', 'base_table_vw', FALSE);
export_objects
----------------------------------------------------------------------------------------------------------------------------------------
CREATE VIEW public.base_table_vw AS
SELECT base_table.c1,
base_table.c2,
base_table.c3
FROM public.base_table;
(1 row)
dbadmin=> \! vsql -c "SELECT export_objects('', 'base_table_vw', FALSE);" | sed "s/CREATE VIEW/CREATE OR REPLACE VIEW/"
export_objects
----------------------------------------------------------------------------------------------------------------------------------------
CREATE OR REPLACE VIEW public.base_table_vw AS
SELECT base_table.c1,
base_table.c2,
base_table.c3
FROM public.base_table;
(1 row)
Helpful Link:https://www.vertica.com/docs/latest/HTML/Content/Authoring/SQLReferenceManual/Functions/VerticaFunctions/EXPORT_OBJECTS.htm
Have fun!
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!
