On Thu, Dec 18, 2025 at 2:39 PM Dilip Kumar <[email protected]> wrote: > > On Tue, Dec 16, 2025 at 9:51 AM Amit Kapila <[email protected]> wrote: > > > > On Mon, Dec 15, 2025 at 5:11 PM Dilip Kumar <[email protected]> wrote: > > > > > We could do this as a first step. See the proposal in email [1] where > > we have discussed having two options instead of one. The first option > > will be conflict_log_format and the values would be log and table. In > > this case, the table would be an internally generated one. > > > > [1] - > > https://www.postgresql.org/message-id/CAA4eK1KwqE2y%3D_k5Xc%3Def0S5JXG2x%3DoeWpDJ%2B%3D5k6Anzaw2gdw%40mail.gmail.com > > So I have put more thought on this and here is what I am proposing > > 1) Subscription Parameter: Son in first version the subscription > parameter will be named 'conflict_log_format' which will accept > 'log/table/both' default option would be log. > 2) If conflict_log_format = log is provided then we do not need to do > anything as this would work by default > 3) If conflict_log_format = table/both is provided then we will > generate a internal table name i.e. conflict_log_table_$subid$ and the > table will be created in the current schema > 4) in pg_subscription we will still keep 2 field a) namespace id of > the conflict log table b) the conflict log format = 'log/table'both' > 5) If option is table/both the name can be generated on the fly > whether we are creating the table or inserting conflict into the > table. > > Question: > 1) Shall we create a conflict log table in the current schema or we > should consider anything else, IMHO the current schema should be fine > and in the future when we add an option for conflict_log_table we will > support schema qualified names as well? > 2) In catalog I am storing the "conflict_log_format" option as a text > field, is there any better way so that we can store in fixed format > maybe enum value as an integer we can do e.g. from below enum we can > store the integer value in system catalog for "conflict_log_format" > field, not sure if we have done such think anywhere else? > > typedef enum ConflictLogFormat > { > CONFLICT_LOG_FORMAT_DEFAULT = 0, > CONFLICT_LOG_FORMAT_LOG, > CONFLICT_LOG_FORMAT_TABLE, > CONFLICT_LOG_FORMAT_BOTH > } ConflictLogFormat;
While exploring other kinds of options I think we can make it a char something like relkind as shown below, any other opinion on the same? #define CONFLICT_LOG_FORMAT_LOG = 'l' #define CONFLICT_LOG_FORMAT_TABLE = 't' #define CONFLICT_LOG_FORMAT_BOTH = 'b' -- Regards, Dilip Kumar Google
