Mitsunori Komatsu created CALCITE-5143:
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Summary: Planner#parse fails to parse a function when HOUR is
passed as an argument
Key: CALCITE-5143
URL: https://issues.apache.org/jira/browse/CALCITE-5143
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.30.0
Reporter: Mitsunori Komatsu
I'm trying to parse and rewrite some SQL dialects including SQL Server which
supports some functions that receive HOUR as an argument using. But Calcite's
Planner#parse can't handle this kind of SQL.
{code:java}
FrameworkConfig config = Frameworks.newConfigBuilder().build();
Planner planner = Frameworks.getPlanner(config);
System.out.println(planner.parse("SELECT DATEDIFF(HOUR, NOW(), NOW())")); {code}
{code:java}
Exception in thread "main" org.apache.calcite.sql.parser.SqlParseException:
Incorrect syntax near the keyword 'HOUR' at line 2, column 21.
Was expecting one of:
"ALL" ...
"ARRAY" ...
"CASE" ...
:
"GROUPING" ...
"HOUR" ...
"HOUR" "(" ...
"*" ...
")" ...
at
org.apache.calcite.sql.parser.impl.SqlParserImpl.convertException(SqlParserImpl.java:389)
at
org.apache.calcite.sql.parser.impl.SqlParserImpl.normalizeException(SqlParserImpl.java:153)
at
org.apache.calcite.sql.parser.SqlParser.handleException(SqlParser.java:145)
at org.apache.calcite.sql.parser.SqlParser.parseQuery(SqlParser.java:160)
at org.apache.calcite.sql.parser.SqlParser.parseStmt(SqlParser.java:185)
at org.apache.calcite.prepare.PlannerImpl.parse(PlannerImpl.java:214)
at org.apache.calcite.tools.Planner.parse(Planner.java:50) {code}
This issue happens with other date/time keyword-ish ones like YEAR.
I guess it happens because HOUR and YEAR are reserved keywords.
Is this an expected behavior? If so, is there any workaround?
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