+++ This bug was initially created as a clone of Bug #32964 +++

Create a report, e.g. based on the following query:
 SELECT "T"."A", "T"."B", "T"."C", "T"."D" FROM "S"."T" AS "T"
The report has "analyze SQL command" set to "yes".
Edit the report.
Menu View, Sorting.
Add a grouping level, for example on column B.
Try to execute the report: it does not work, one gets SQL error from PostgreSQL:
 missing FROM-clause entry for table "S.T"

That's because the SQL command sent to PostgreSQL looks like:

 SELECT "T"."A", "T"."B", "T"."C", "T"."D" FROM "S"."T" AS "T" ORDER BY "S.T"."B"

The fully qualified name for that table is "S"."T", not "S.T": the escaping is wrong.

I reproduced this bug with:
 - Debian package of LibreOffice version 1:3.3.0~rc2-3.
 - self-build of master git branch, with OpenJDK 6b18-1.8.3-2
 - Debian package 1:3.3.0~rc3-2, with OpenJDK 6b18-1.8.3-2
 - Debian package 1:3.3.0~rc3-2, with gcj 4:4.4.5-2

*Not* getting this bug with:
 - OpenOffice 3.2.1 (Debian package 1:3.2.1-11) with gcj 4:4.4.5-1
 - OpenOffice 3.2.1 (Debian package 1:3.2.1-11) with OpenJDK 6b18-1.8.3-2

All tests done with sdbc PostgreSQL driver, version 0.7.6, from Debian package (OpenOffice or LibreOffice, as the case may be).