array_combine() and narray_combine() functions
The array_combine() and narray_combine() functions combine the elements in an array into a single delimited varchar or nvarchar value.
Syntax
The array_combine() function
has the following syntax:
varchar = array_combine(array input, char delimiter);
The narray_combine() function
is the Unicode form of the function and has the following syntax:
nvarchar = narray_combine(array input, nchar delimiter);
The input value
specifies the array to decompose into a
single varchar or nvarchar value.
The delimiter value specifies the delimiter that
distinguishes the array elements.
Returns
The functions return a single delimited varchar or nvarchar value.Example
For example, the following two queries add two elements to the
array in the array_t table, which
was created in the array() function example:
update array_t set col2= add_element(col2,12);
UPDATE 1
update array_t set col2= add_element(col2,23);
UPDATE 1
You can use the following query to display the array elements separated
by a vertical bar
delimiter:
select array_combine(col2,'|')from array_t;
array_combine
---------------
12|23
(1 row)