./gradlew ":x-pack:plugin:esql:qa:server:mixed-cluster:v8.12.2#javaRestTest" -Dtests.class="org.elasticsearch.xpack.esql.qa.mixed.MixedClusterEsqlSpecIT" -Dtests.method="test {where-like.RlikeWithLowerConflictingFolded SYNC}" -Dtests.seed=2330B6AAC8F568C2 -Dtests.bwc=true -Dtests.locale=de-AT -Dtests.timezone=Europe/Gibraltar -Druntime.java=24 

org.elasticsearch.client.ResponseException: method [POST], host [http://[::1]:41641], URI [/_query?pretty=true&error_trace=true], status line [HTTP/1.1 400 Bad Request] Warnings: [No limit defined, adding default limit of [500]] ¿eerror¿jroot_cause�¿dtypevverification_exceptionfreasonx�Found 1 problem line 4:9: Unknown function [TO_UPPER], did you mean any of [to_ver, to_integer, to_ip, to_str, to_ulong, to_ul]?kstack_tracey �org.elasticsearch.xpack.esql.analysis.VerificationException: Found 1 problem line 4:9: Unknown function [TO_UPPER], did you mean any of [to_ver, to_integer, to_ip, to_str, to_ulong, to_ul]?	at org.elasticsearch.xpack.esql.analysis.Analyzer.verify(Analyzer.java:120)	at org.elasticsearch.xpack.esql.analysis.Analyzer.analyze(Analyzer.java:114)	at org.elasticsearch.xpack.esql.session.EsqlSession.lambda$analyzedPlan$2(EsqlSession.java:145)	at org.elasticsearch.xpack.esql.session.EsqlSession.lambda$preAnalyze$5(EsqlSession.java:170)	at org.elasticsearch.server@8.12 [truncated]