lancelly commented on code in PR #27572:
URL: https://github.com/apache/shardingsphere/pull/27572#discussion_r1279502532
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parser/sql/dialect/oracle/src/main/antlr4/imports/oracle/BaseRule.g4:
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@@ -800,7 +800,12 @@ castFunction
;
charFunction
- : CHAR LP_ expr (COMMA_ expr)* (USING ignoredIdentifier)? RP_
+ : (CHR | CHAR) LP_ expr (COMMA_ expr)* (USING charSet)? RP_
Review Comment:
Hi, it seems that `ignoredIdentifier` can not parse `NCHAR_CS`.
NCHAR_CS is the only charset that CHR function supports according to this:
<img width="676" alt="截屏2023-07-31 23 39 09"
src="https://github.com/apache/shardingsphere/assets/108499334/88421f57-be44-467a-a260-5f9c9f4d1d50";>
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