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Does Postgres have a query cache?
PostgreSQL Query Cache, a new open source software, which enables to improve query performance extremely (10x~100x) by caching query results, has been launched. PostgreSQL Query Cache: waits connections on the different port from the clients.
How do I write if statements in PostgreSQL?
The IF statement is part of the default procedural language PL/pgSQL. You need to create a function or execute an ad-hoc statement with the DO command. You need a semicolon ( ; ) at the end of each statement in plpgsql (except for the final END ). You need END IF; at the end of the IF statement.
How to return result of query from function in PostgreSQL?
CREATE OR REPLACE FUNCTION get_all_record () RETURNS TABLE (id integer , field2 varchar (20)) AS $$ BEGIN EXECUTE ‘SELECT table1.id, table1.field2 FROM table1’ INTO id, field2; RETURN; END; $$ LANGUAGE plpgsql but this solution returns only one record in one field. How can I correct it? Thanks for contributing an answer to Stack Overflow!
How to not include elements in a PostgreSQL query?
Say I want to take elements with code starting from 4 but not include the elements with code whose 6-th number is 9 (1121290). The code column contains string of numbers with max-length of 8 char. and I want to take almost everything that starts with 4 except elements that start with 411, 427 and 428
How to return result of query from function?
I have the query for example “select id, field1, field2 from table1” (id and field1 are integer and field2 is varchar) and I need call the query from function and return result as is.
How to not include results in Stack Overflow?
The extra conditions won’t hurt the query’s efficiency much; it’s going to have to scan every single row starting with 4 anyway. Here is a more compact version. Thanks for contributing an answer to Stack Overflow!