Github user laurentgo commented on a diff in the pull request:
https://github.com/apache/drill/pull/775#discussion_r104813282
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/work/metadata/ServerMetaProvider.java
---
@@ -76,7 +76,7 @@
.setReadOnly(false)
.setGroupBySupport(GroupBySupport.GB_UNRELATED)
.setLikeEscapeClauseSupported(true)
- .setNullCollation(NullCollation.NC_AT_END)
+ .setNullCollation(NullCollation.NC_HIGH)
--- End diff --
I'm not sure if the last sentence is correct. If user specified DESC, and
null collation is unspecified, then null should sort first, no (if always
HIGH). NC_HIGH seems then the correct value (unless the default can be changed
in the planner configuration).
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