Adding value to Postgres integer array

I like this way better:

UPDATE table1 SET integer_array = integer_array || '{10}';

You can also add multiple values with single query:

UPDATE table1 SET integer_array = integer_array || '{10, 11, 12}';

-- Declaring the array

arrayName int8[];

-- Adding value 2206 to int array

arrayName := arrayName || 2206;

-- looping throught the array

FOREACH i IN ARRAY arrayName 
LOOP 

 RAISE NOTICE 'array value %', i;

END LOOP;

cheers

Use array_append function to append an element at the end of an array:

UPDATE table1
SET integer_array = array_append(integer_array, 5);

5 is a value of choice, it's of an integer datatype in your case. You probably need some WHERE clause as well not to update the entire table.

Try below to see how it works:

SELECT ARRAY[1,2], array_append(ARRAY[1,2],3);

Result:

 array | array_append
-------+--------------
 {1,2} | {1,2,3}