MaxGekk commented on code in PR #50336:
URL: https://github.com/apache/spark/pull/50336#discussion_r2036803770
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/timeExpressions.scala:
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@@ -349,3 +353,109 @@ object SecondExpressionBuilder extends ExpressionBuilder {
}
}
+/**
+ * Returns the current time at the start of query evaluation.
+ * There is no code generation since this expression should get constant
folded by the optimizer.
+ */
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = """
+ _FUNC_([precision]) - Returns the current time at the start of query
evaluation.
+ All calls of current_time within the same query return the same value.
+
+ _FUNC_ - Returns the current time at the start of query evaluation.
+ """,
+ arguments = """
+ Arguments:
+ * precision - An optional integer literal in the range
[${TimeType.MIN_PRECISION}..${TimeType.MICROS_PRECISION}], indicating how many
Review Comment:
I guess the constants ${TimeType.MIN_PRECISION} won't embedded in the
string. It should start from s" at least. Could you generate the doc, and
double check.
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