Define function to add two parameters together : Function Return « Store Procedure Function « PostgreSQL

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PostgreSQL » Store Procedure Function » Function Return   Define function to add two parameters together postgres=# postgres=# CREATE FUNCTION add_em(integer, integer) RETURNS integer AS $$ postgres$#    SELECT $1 + $2; postgres$# $$ LANGUAGE SQL; CREATE FUNCTION postgres=# postgres=# SELECT add_em(1, 2) AS answer;  answer --------       3 (1 row) postgres=# postgres=# drop function add_em(integer, integer); DROP FUNCTION postgres=# postgres=#                     Related examples in the same category 1.  Return entire row 2.  Using the result set returned from the function 3.  Returning a concatenated string 4.  Return 'double' from function 5.  A SQL function that returns a book title based on the ID number passed to the function 6.  Return a table from a function

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