AMashenkov commented on code in PR #5603:
URL: https://github.com/apache/ignite-3/pull/5603#discussion_r2041939923
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modules/sql-engine/src/main/codegen/includes/parserImpls.ftl:
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@@ -787,3 +787,39 @@ Boolean SqlKillNoWait():
return noWait;
}
}
+
+/**
+ * Parses an EXPLAIN PLAN statement.
+ */
+SqlNode SqlIgniteExplain() :
+{
+ SqlNode stmt;
+ SqlExplainLevel detailLevel = SqlExplainLevel.EXPPLAN_ATTRIBUTES;
+ SqlExplain.Depth depth;
+ Span s;
+ final SqlExplainFormat format;
+}
+{
+ <EXPLAIN> { s = span(); } <PLAN>
+ [ detailLevel = ExplainDetailLevel() ]
+ depth = ExplainDepth()
+ (
+ LOOKAHEAD(2)
+ <AS> <XML> { format = SqlExplainFormat.XML; }
+ |
+ LOOKAHEAD(2)
+ <AS> <JSON> { format = SqlExplainFormat.JSON; }
+ |
+ <AS> <DOT_FORMAT> { format = SqlExplainFormat.DOT; }
Review Comment:
Should we use LOOKAHEAD(2) here as well or it is enough to set it once for
the very first option?
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