I had a question earlier: PostgreSQL trim text field with regex (or else) And I got a wonderful answer by a_horse_with_no_name. Now I have an additional question regarding this issue.
So here it is this rextester https://rextester.com/SUWG96428 and the goal is to have all the ids in a separate column. Is it possible at all?
Like this:
+---+----+-------+-------+
| | id | ids_1 | ids_2 |
+---+----+-------+-------+
| 1 | 1 | 4202 | 4203 |
| 2 | 2 | 4204 | |
| 3 | 3 | 4201 | |
+---+----+-------+-------+
Yep, you can modify your query like:
select
t.id,
right(((the_column::json->'itemID')->>0)::varchar, 4) as col1,
right(((the_column::json->'itemID')->>1)::varchar, 4) as col2,
right(((the_column::json->'itemID')->>2)::varchar, 4) as col3
from the_table t;
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