Hi Martin,
May be I don’t understand completely what are you trying to accomplish but based on your example bellow UNNEST function should do a magic for you, this is the example I wrote for your case:
create table if not exists foo(id int, arr text[]);
truncate table foo;
insert into foo values (1, '{"value1", "value2", "value3"}'), (2, '{"value21", "value22", "value23"}');
create table if not exists foo2(id int, val text);
truncate table foo2;
insert into foo2
select id, unnest(arr) from foo;
Is this what you trying to do?
Best,
-Igor
Is this possible? I have seen examples with array literals as VALUES string, but I cant seen to get it to work with an actual array.
testing code
--This gets me a multidimensional array
with arr AS (
SELECT ARRAY(SELECT ARRAY[fileid::text,tagname,array_to_string(tagvalue,E'\b')]
FROM tagdata_all) -- limit 100)
arr1
)
--Then
INSERT INTO tagdatatest2
SELECT arr1::text[] FROM arr --doesnt work only populates one column with original array