Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

array_concat function

The array_concat function concatenates two arrays to create an array that contains all the elements in the first array followed by all the elements in the second array. The two arguments must be valid arrays.

Syntax

array_concat( super_expr1,  super_expr2 )

Arguments

Return type

The array_concat function returns a SUPER data value.

Example

The following examples shows concatenation of two arrays of the same type and concatenation of two arrays of different types.

-- concatenating two arrays 
SELECT ARRAY_CONCAT(ARRAY(10001,10002),ARRAY(10003,10004));
              array_concat
------------------------------------
 [10001,10002,10003,10004]
(1 row)

-- concatenating two arrays of different types 
SELECT ARRAY_CONCAT(ARRAY(10001,10002),ARRAY('ab','cd'));
          array_concat
------------------------------
 [10001,10002,"ab","cd"]
(1 row)