Zine eddine Zidane created CALCITE-5652:
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Summary: How to add a database-specific comment symbol
Key: CALCITE-5652
URL: https://issues.apache.org/jira/browse/CALCITE-5652
Project: Calcite
Issue Type: New Feature
Components: core
Affects Versions: 1.34.0
Reporter: Zine eddine Zidane
Is there a clean way to add a database-specific comment symbol? for example,
the hash symbol "#" is used for inline comments on Mysql, Postgres, and Oracle.
A straightforward way is to just add it to the regular expression definition of
the SINGLE_LINE_COMMENT keyword below but is this will make it a valid symbol
regardless of a database which is not the intent
{code:java}
<DEFAULT, DQID, BTID, BQID, BQHID> SKIP :
{
<SINGLE_LINE_COMMENT: ("//" | "--") (~["\n","\r"])* ("\r\n"|"\r"|"\n")?>
} {code}
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