in reply to Re^4: Create parallel database handles or SQL statements for multi-threaded/process access to Postgres DB using DBI, DBD::Pg and Parallel::ForkManager
in thread Create parallel database handles or SQL statements for multi-threaded/process access to Postgres DB using DBI, DBD::Pg and Parallel::ForkManager

Hi again,

Add to your DB schema: 

unique key all_cols_uk (every, column, name, in, the, table),

[download]

https://www.w3schools.com/sql/sql_unique.asp

Hope this helps!


The way forward always starts with a minimal test.
  • Comment on Re^5: Create parallel database handles or SQL statements for multi-threaded/process access to Postgres DB using DBI, DBD::Pg and Parallel::ForkManager
  • Download Code

Replies are listed 'Best First'.
Re^6: Create parallel database handles or SQL statements for multi-threaded/process access to Postgres DB using DBI, DBD::Pg and Parallel::ForkManager
by erix (Prior) on May 08, 2020 at 18:52 UTC

    On that page postgres is not mentioned; in postgresql-SQL, that'd become, I think:

    create unique index all_cols_uk on tablename (every, column, name, in,
+ the, table)
;

    [download]

    See: CREATE INDEX in the fine manual

[reply]
[d/l]

In Section Seekers of Perl Wisdom