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https://issues.apache.org/jira/browse/CALCITE-7810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7810:
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Labels: pull-request-available (was: )
> Write Rex string literal digests directly
> -----------------------------------------
>
> Key: CALCITE-7810
> URL: https://issues.apache.org/jira/browse/CALCITE-7810
> Project: Calcite
> Issue Type: Sub-task
> Reporter: Frank Chen
> Priority: Major
> Labels: pull-request-available
>
> String RexLiteral digest generation currently asks NlsString to build a
> complete SQL string and then copies that temporary string into the
> destination StringBuilder. Large literal ARRAYs repeat this allocation for
> every element.
> Add NlsString.asSql overloads that append the escaped SQL representation
> directly to a caller-provided StringBuilder, while preserving ANSI dialect
> selection, charset-prefix handling, quote escaping, and existing output
> behavior.
> The isolated Druid benchmark reduced allocation by 2.46% at 100,000 string
> literals and 1.31% at 1,000,000 string literals.
> Pull request: [PR #5284|https://github.com/apache/calcite/pull/5284]
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