- Timestamp format of PG is different, stop assuming the timestamp
 - "1" is not a valid query condition in PG, "1=1" is in all engines
 - When the field is type of text (or char/binary), the value should be
   text too (not integer). This casting should be better handled in core
   but it doesn't matter much so let's just fix it here.

Bug: T207226
Change-Id: I8f18adbf74810ce1fb41a714e9412e95493c1d85