Обсуждение: pgsql: doc: clarify CREATE TABLE AS ... IF NOT EXISTS

doc:  clarify CREATE TABLE AS ... IF NOT EXISTS

Mention that the table is not modified if it already exists.

Reported-by: frank_limpert@yahoo.com

Discussion: https://postgr.es/m/164441177106.9677.5991676148704507229@wrigleys.postgresql.org

Backpatch-through: 10

Branch
------
REL_12_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/4e32fb1631dc6a7e0bb21b2e4ac77299231c2745

Modified Files
--------------
doc/src/sgml/ref/create_table_as.sgml | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)