Migrate more code from Expr::to_columns to Expr::column_refs
#11067
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logical-expr
alamb
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Jun 22, 2024
| Some(expr) => { | ||
| // Extract columns from filter expression and saved in a HashSet | ||
| let cols = expr.to_columns()?; | ||
| let cols = expr.column_refs(); |
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this saves copying all the Columns (which have owned strings in them)
comphead
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Jun 22, 2024
datafusion/optimizer/src/utils.rs
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| /// Returns true if all columns in col_refs are in `schema_cols` | ||
| /// | ||
| /// Note: can't use `HashSet::intersect` here because they have different types. | ||
| pub(crate) fn has_all_refs( |
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maybe we can rename it to better reflect if all columns in col_refs are in schema_cols` ?
comphead
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Jun 22, 2024
findepi
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Jul 16, 2024
…che#11067) * Migrate code from `Expr::to_columns` to `Expr::column_refs`
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Which issue does this PR close?
Part of #10505
Rationale for this change
We made an API to find column references without copying strings in #10948 and we should use it more.
What changes are included in this PR?
Expr::column_refsAPI introduced in Add Expr::column_refs to find column references without copying #10948 to avoid copyingAre these changes tested?
Covered by existing CI
Are there any user-facing changes?
No (though perhaps slightly faster planning)