beliefer commented on a change in pull request #25001: [SPARK-28083][SQL]
Support LIKE ... ESCAPE syntax
URL: https://github.com/apache/spark/pull/25001#discussion_r305697618
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
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@@ -1240,7 +1240,14 @@ class AstBuilder(conf: SQLConf) extends
SqlBaseBaseVisitor[AnyRef] with Logging
case SqlBaseParser.IN =>
invertIfNotDefined(In(e, ctx.expression.asScala.map(expression)))
case SqlBaseParser.LIKE =>
- invertIfNotDefined(Like(e, expression(ctx.pattern)))
+ val escapeOpt = Option(ctx.escapeChar).map(string).map { str =>
+ if (str.length > 1) {
+ throw new ParseException("Invalid escape string." +
+ "Escape string must be empty or one character.", ctx)
Review comment:
OK. I will add tests in `ExpressionParserSuite`.
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