On Tue, Jul 10, 2018 at 08:06:24PM -0400, Alvaro Herrera wrote: > You can't truncate prim on its own. This is expected. > alvherre=# truncate table prim, partfk; > ERROR: cannot truncate a table referenced in a foreign key constraint > DETALLE: Table "partfk" references "prim". > SUGERENCIA: Truncate table "partfk" at the same time, or use TRUNCATE ... > CASCADE.
You mean that instead: =# truncate table prim; ERROR: 0A000: cannot truncate a table referenced in a foreign key constraint DETAIL: Table "partfk" references "prim". HINT: Truncate table "partfk" at the same time, or use TRUNCATE ... CASCADE. LOCATION: heap_truncate_check_FKs, heap.c:3245 I agree that this should be an error. > However, you can't do it even if you try to include partfk in the mix: > > alvherre=# truncate table prim, partfk; > ERROR: cannot truncate a table referenced in a foreign key constraint > DETALLE: Table "partfk" references "prim". > SUGERENCIA: Truncate table "partfk" at the same time, or use TRUNCATE ... > CASCADE. Your first and second queries are the same :) And those ones work: =# truncate table partfk; TRUNCATE TABLE =# truncate table partfk, partfk1; TRUNCATE TABLE =# truncate table partfk, partfk1, partfk2; TRUNCATE TABLE =# truncate table partfk, partfk2; TRUNCATE TABLE > Trying to list all the partitions individually is pointless: > > alvherre=# truncate table prim, partfk, partfk1, partfk2; > ERROR: cannot truncate a table referenced in a foreign key constraint > DETALLE: Table "partfk" references "prim". > SUGERENCIA: Truncate table "partfk" at the same time, or use TRUNCATE ... > CASCADE. Yes, I would expect this one to pass. > CASCADE is also useless: > > alvherre=# truncate table prim cascade; > NOTICE: truncate cascades to table "partfk" > NOTICE: truncate cascades to table "partfk1" > NOTICE: truncate cascades to table "partfk2" > ERROR: cannot truncate a table referenced in a foreign key constraint > DETALLE: Table "partfk" references "prim". > SUGERENCIA: Truncate table "partfk" at the same time, or use TRUNCATE ... > CASCADE. And this one as well. -- Michael
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