PostgreSQL – ARRAY_TO_STRING Function
The array_to_string function is used to convert an array of elements into a single string in PostgreSQL database by concatenating the elements together with a specified delimiter.
Here is the syntax for the array_to_string function:
array_to_string(array_expression, delimiter)where array_expression is the array that you want to convert into a string.
and delimiter is the delimiter that you want to use to separate the elements in the resulting string. It can be a string literal or an expression that results in a string.
Here’s an example of using the array_to_string function:
Consider an array of names:
SELECT array_to_string(ARRAY['John', 'Doe', 'Alice'], ' ')The result of this query would be a single string where the elements of the array are concatenated with the space delimiter:
"John Doe Alice"You can use any delimiter you want. For example:
SELECT array_to_string(ARRAY[1, 2, 3], ',')The result of this query would be:
"1,2,3"You can use the array_to_string function in various ways to manipulate and format arrays as strings in your PostgreSQL queries.