[SR-Users] Parser error with sql_pvquery?

I'm trying to do an sql_pvquery() and have PostgreSQL return the default value using COALESCE (if the other parts of the query return NULL) rather than placing the $null check on the return in the Kamailio script. I seem to be coming up on a parser issue, perhaps too many nested parentheses: sql_pvquery("kamailio", "SELECT COALESCE((SELECT value FROM usr_preferences WHERE attribute='callee_rtp_transport' AND (uuid='$sht(rtpengine=>$ci::$T_branch_idx::callee_ip)' OR username='$rU') LIMIT 1), 'RTP/AVP')", "$sht(rtpengine=>$ci::$T_branch_idx::callee_rtp_transport)"); <core> [cfg.y:3428]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 1444, column 14: syntax error Is this query "too complex" for the parser, or is there something I've missed above? Thanks. -A -- Anthony - https://messinet.com/ - https://messinet.com/~amessina/gallery 8F89 5E72 8DF0 BCF0 10BE 9967 92DC 35DC B001 4A4E