Return 'double' from function : Function Return « Store Procedure Function « PostgreSQL

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PostgreSQL » Store Procedure Function » Function Return   Return 'double' from function postgres=# CREATE FUNCTION "double_price" (double precision) RETURNS double precision AS ' postgres'#   DECLARE postgres'#   BEGIN postgres'#     return $1 * 2; postgres'#   END; postgres'# ' LANGUAGE 'plpgsql'; CREATE FUNCTION postgres=# postgres=# select double_price(10);  double_price --------------            20 (1 row) postgres=#                     Related examples in the same category 1.  Define function to add two parameters together 2.  Return entire row 3.  Using the result set returned from the function 4.  Returning a concatenated string 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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