INIT_COMMAND does not override time zone setting

[daskol]

Option INIT_COMMAND does not override time zone setting for FDW. The reason is that mysqlBeginForeignScan procedure creates connection, runs INIT_COMMAND and then reset timezone. It seems that it is not necessary to force setting UTC time on connection. The propable solution is just remove this and this lines.

Several steps are enumerated bellow to reproduce reported behavior.

1. Create view tz in MySQL and then create FDW in PostgreSQL like

   -- mysql
   CREATE VIEW tz AS SELECT NOW() AS now;
   -- postgresql
   CREATE TABLE tz (now timestamp) SERVER mysql_server OPTIONS (...);

2. Also append option INIT_COMMAND to you MySQL server object

   ALTER SERVER mysql_master OPTIONS (init_command 'SET time_zone = "+03:00"');

3. Suppose your MySQL server located in Europe/Moscow timezone. So, query databases in way like

   ur-database $> SELECT * FROM tz;
   -- MySQL output
   +---------------------+
   | now                 |
   +---------------------+
   | 2017-09-13 20:40:09 |
   +---------------------+
   --  PostgreSQL output
             now              
   -------------------------------
    2017-09-13 17:43:39

[bbrodriges]

Really annoying behaviour! Do you plan to do something?

[ahsanhadi]

We will look into this..

On Tue, 17 Oct 2017 at 9:18 PM, bbrodriges notifications@github.com wrote:

Really annoying behaviour! Do you plan to do something?

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