On 19/11/2018 06:18, Haribabu Kommi wrote:
> Amit suggested another option in another mail, so total viable
> solutions that are discussed as of now are,
>
> 1. Single API with NULL input treat as invalid value
> 2. Multiple API to deal with NULL input of other values
> 3. Single API with NULL value to treat them as current user, current
> database
> and NULL queryid.
> 4. Single API with -1 as invalid value, treat NULL as no matching. (Only
> problem
> with this approach is till now -1 is also a valid queryid, but setting
> -1 as queryid
> needs to be avoided.
Can you show examples of what these would look like?
Following are some of the examples how the various options
work.
Option -1:
select pg_stat_statements_reset(NULL,NULL,NULL);
-- No change, just return. Because the function is strict.
select pg_stat_statements_reset(10,10,NULL);
-- Resets all the statements that are executed by userid 10 on database id 10.
select pg_stat_statements_reset(NULL,10,NULL);
-- Resets all the statements executed on database id 10
Option - 2:
select pg_stat_statements_reset(NULL,NULL,NULL);
-- No change, just return. Function are of type strict.
select pg_stat_statements_reset(10,10,1234)
-- Resets the query statement 1234 executed by userid 10 on database id 10
select pg_stat_statements_reset_by_userid(10)
-- Resets all the statements executed by userid 10
select pg_stat_statements_reset_by_dbid(10);
-- Rests all the statements executed on database id 10.
select pg_stat_statements_reset_by_userid_and_dbid(10, 10);
-- Resets all the statements executed by userid 10 on datbase id 10
Likewise total 7 API's.
Option -3:
select pg_stat_statements_reset(NULL,NULL,NULL);
--Similar like option-1, but when the userid or databaseid are NULL, it uses
the current_role and current_database as the options. But for the queryid
when the options is NULL, it deletes all the queries.
Rest of the details are same as option-1.
Option -4:
select pg_stat_statements_reset(NULL,NULL,NULL);
-- No change, just return. Because the function is strict.
select pg_stat_statements_reset(0,0,0);
-- Resets all the statements
select pg_stat_statements_reset(0,10,0);
-- Resets all the statements executed on database id 10
select pg_stat_statements_reset(10,0,0);
-- Resets all the statements executed on userid 10.
Regards,
Haribabu Kommi
Fujitsu Australia
