jibiyr created CALCITE-4705:
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Summary: calcite should support hint like /*+ skewjoin(a(c0, c1))
*/
Key: CALCITE-4705
URL: https://issues.apache.org/jira/browse/CALCITE-4705
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.27.0
Reporter: jibiyr
Assignee: jibiyr
Fix For: 1.28.0
Dear community,
calcite parse support hint now,but it can not parse hint like follew,
_*select /*+ skewjoin(a(c0, c1)) */ * from T0 a join T1 b on a.c0 = b.c0,*_
this is the bnf which is calcite supported now,
{code:java}
//
hint:
hintName
| hintName '(' hintOptions ')'
hintOptions:
hintKVOption [, hintKVOption ]*
| optionName [, optionName ]*
| optionValue [, optionValue ]*
hintKVOption:
optionName '=' stringLiteral
| stringLiteral '=' stringLiteral
optionValue:
stringLiteral
| numericLiteral
{code}
I think the hintOptions should support the function call pattern,like a(c0,c1).
and this pattern can be parsed by spark/presto now.
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