Is there a way to define a named constant in a PostgreSQL query? For example:
MY_ID = 5;
SELECT * FROM users WHERE id = MY_ID;
Is there a way to define a named constant in a PostgreSQL query? For
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Is there a way to define a named constant in a PostgreSQL query? For example:
MY_ID = 5;
SELECT * FROM users WHERE id = MY_ID;
This question has been asked before (How do you use script variables in PostgreSQL?). However, there is a trick that I use for queries sometimes:
That is, I define a CTE called const that has the constants defined there. I can then cross join this into my query, any number of times at any level. I have found this particularly useful when I’m dealing with dates, and need to handle date constants across many subqueries.