liyafan82 commented on a change in pull request #2242:
URL: https://github.com/apache/calcite/pull/2242#discussion_r517862966
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File path:
core/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java
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@@ -482,6 +500,7 @@
* <p>Its precedence is less than the prefix {@link #UNARY_PLUS +}
* and {@link #UNARY_MINUS -} operators.
*/
+ @LibraryOperator(libraries = {STANDARD})
public static final SqlBinaryOperator MINUS =
new SqlMonotonicBinaryOperator(
"-",
Review comment:
@danny0405 The essential change to the 'core data structure' is just
annotating some operators as 'standard'. This simply attaches richer
information to the operators, which will help users.
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