Hello Adrian,

So, if I well understand, the only solution is to wrap the mysql datetime 
columns to "text" columns in my foreign tables.
And then use a cast function to convert from text to date in Postgre when I 
want to use these columns ?

No other way.
The pgloader can't be used by the FDW to manage this point ?



-----Message d'origine-----
De : Adrian Klaver <adrian.kla...@aklaver.com> 
Envoyé : vendredi 23 mars 2018 13:52
À : Patricia DECHANDOL <pdechan...@intercountry.com>; 
pgsql-general@lists.postgresql.org
Objet : Re: Use pgloader with FDW

On 03/23/2018 03:55 AM, Patricia DECHANDOL wrote:
> Hello,
> 
> I'm new to Postgresql and try to use the FDW with mysql database.
> 
> Everything is OK to create my FDW and foreign tables, but I meet a 
> problem when I try to do a select on a FOREIGN table containing 
> datetime column which contains the value "0000-00-00 00:00:00" in mysql.

That is MySQL's version of NULL for datetimes. It is not a valid datetime 
though.

> 
> Select on the foreign table fails.
> 
> The mysql datetime column has been automatically wrapped to "timestamp 
> without timezone" column in the foreign table by the instruction 
> "import foreign schema" that I used.

> 
> How can I deal with this ?

https://github.com/EnterpriseDB/mysql_fdw/issues/38

> 
> I read about the pgloader with can manage this king of problem, but 
> can't figure out how to use it with FDW.
> 
> Thanks for your help.
> 


--
Adrian Klaver
adrian.kla...@aklaver.com

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