array_concat function - Amazon Redshift
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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

super_expr1

The value that specifies the first of the two arrays to concatenate.

super_expr2

The value that specifies the second of the two arrays to concatenate.

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)