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https://issues.apache.org/jira/browse/CALCITE-6320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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EveyWu updated CALCITE-6320:
----------------------------
Description:
# Since Spark 2.0, string literals (including regex patterns) are unescaped in
the parser phase, details in
[AstBuilder|[https://github.com/apache/spark/blob/76b1c122cb7d77e8f175b25b935b9296a669d5d8/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala#L2876C1-L2882C4]]
# In Hive, unescape in the node normalization
phase(`Dispatcher#dispatch`).[StrExprProcessor|[https://github.com/apache/hive/blob/03a76ac70370fb94a78b00496ec511e671c652f2/ql/src/java/org/apache/hadoop/hive/ql/parse/type/TypeCheckProcFactory.java#L403C1-L405C17]]
is the processor for processing string unescape.
> Parse SQL with Hive-style and Spark-style unescaped character literals
> ----------------------------------------------------------------------
>
> Key: CALCITE-6320
> URL: https://issues.apache.org/jira/browse/CALCITE-6320
> Project: Calcite
> Issue Type: Bug
> Reporter: EveyWu
> Priority: Minor
>
> # Since Spark 2.0, string literals (including regex patterns) are unescaped
> in the parser phase, details in
> [AstBuilder|[https://github.com/apache/spark/blob/76b1c122cb7d77e8f175b25b935b9296a669d5d8/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala#L2876C1-L2882C4]]
> # In Hive, unescape in the node normalization
> phase(`Dispatcher#dispatch`).[StrExprProcessor|[https://github.com/apache/hive/blob/03a76ac70370fb94a78b00496ec511e671c652f2/ql/src/java/org/apache/hadoop/hive/ql/parse/type/TypeCheckProcFactory.java#L403C1-L405C17]]
> is the processor for processing string unescape.
>
>
>
>
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