OGR join problem

[yoda (sent by Nabble.com)]

I try to join a shp file and a mysql table.
I try this :

ogrinfo -ro
/var/www/html/cartoweb3/projects/lyon/server_conf/lyon/data/sa_lo.shp -sql
"select * from sa_lo a left join 'MYSQL:
lyon,user=root,port=3306'.lones b on a.Id=b.id"

and retrieve that :

INFO: Open of
`/var/www/html/cartoweb3/projects/lyon/server_conf/lyon/data/sa_lo.shp'
using driver `ESRI Shapefile' successful.
ERROR 1: SQL: Unrecognised secondary field a.Id in JOIN clause..

the Id column (N,9,0) exist in the shape file and the id field (INT(6))
exist in the lones table.
Then i don't understand what's wrong.

An idea ?
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