tree 0303d58558b417b0cf339c2ccab7cbd3c75ee1a5
parent b421741d7f17868958c50b4b19f22d255071472a
author Gabor Kaszab <gaborkaszab@cloudera.com> 1573203342 +0100
committer Gabor Kaszab <gaborkaszab@cloudera.com> 1575382750 +0000

IMPALA-9131: Use single quotes around FORMAT clause in CAST

When running a CAST(..FORMAT..) query then the header of the output
shows the value of the FORMAT clause surrounded by double quotes.
However, the SQL way is to use single quotes for strings so this
patch changes the printout from using double quotes to use single
quotes instead.
Additionally, this fixes a bug where it wasn't possible to have a
single quote separator in a format string that was itself surrounded
by single quotes. As a fix the single quote separator can be escaped
by a backslash in this case.
Another additional fix to make the FX modifier case-insensitive.

Change-Id: I3310abfa6f3ccbbe4c437846c6dd05791153e6f7
Reviewed-on: http://gerrit.cloudera.org:8080/14665
Reviewed-by: Attila Jeges <attilaj@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>