Cast char as integer : Cast « Data Type « PostgreSQL

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PostgreSQL » Data Type » Cast   Cast char as integer postgres=# postgres=# postgres=# SELECT 1 + CAST('1' || '2' AS integer) AS add_on_to_twelve;  add_on_to_twelve ------------------                13 (1 row) postgres=#                     Related examples in the same category 1.  round(4.0, 4) 2.  round(CAST (4 AS numeric), 4) 3.  SELECT 1 + ('1' || '2')::integer

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