INSERT INTO vv SELECT 'abc' || 'def'
postgres=#
postgres=# CREATE TABLE vv (v character(20));
CREATE TABLE
postgres=#
postgres=# INSERT INTO vv SELECT 'abc' || 'def';
INSERT 0 1
postgres=# SELECT v, length(v) FROM vv;
v | length
----------------------+--------
abcdef | 6
(1 row)
postgres=#
postgres=# drop table vv;
DROP TABLE
postgres=#
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