Re: row filtering for logical replication

On Tue, Nov 30, 2021 at 9:34 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
>
> 3) Can a user remove the row filter without removing the table from
> the publication after creating the publication or should the user drop
> the table and add the table in this case?
>

AFAIK to remove an existing filter use ALTER PUBLICATION ... SET TABLE
but do not specify any filter.
For example,

test_pub=# create table t1(a int primary key);
CREATE TABLE
test_pub=# create publication p1 for table t1 where (a > 1);
CREATE PUBLICATION
test_pub=# create publication p2 for table t1 where (a > 2);
CREATE PUBLICATION
test_pub=# \d+ t1
Table "public.t1"
Column | Type | Collation | Nullable | Default | Storage |
Compression | Stats target | Description
--------+---------+-----------+----------+---------+---------+-------------+--------------+-------------
a | integer | | not null | | plain |
| |
Indexes:
"t1_pkey" PRIMARY KEY, btree (a)
Publications:
"p1" WHERE ((a > 1))
"p2" WHERE ((a > 2))
Access method: heap

test_pub=# alter publication p1 set table t1;
ALTER PUBLICATION
test_pub=# \d+ t1
Table "public.t1"
Column | Type | Collation | Nullable | Default | Storage |
Compression | Stats target | Description
--------+---------+-----------+----------+---------+---------+-------------+--------------+-------------
a | integer | | not null | | plain |
| |
Indexes:
"t1_pkey" PRIMARY KEY, btree (a)
Publications:
"p1"
"p2" WHERE ((a > 2))
Access method: heap

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Kind Regards,
Peter Smith.
Fujitsu Australia