I have noticed a couple complaints about converting MySQL's CONCAT and CONCAT_WS functions to Postgres .

Naturally, such a commonly used function must work, so I rewrote it with the parser:

select concat_ws(',', `asdf`, 'w00t', somecolumn)
  from mysql.db;

Is rewritten to:

  select ARRAY_TO_STRING(ARRAY["asdf", 'w00t', somecolumn], ',')
    from mysql.db;

It seems the Postgres way is uglier but it is far more versatile than CONCAT_WS. Not only does Postgres have array types, but it can handle many more cases than just concatenating elements.

Pgify: https://github.com/mrj0/pgify

Even more awesome is coming soon.