Implement structured subset params support #3629
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…yExpr) Add support for structured expressions in subset queries to enable proper columnMapper transformations for column names. This enables TanStack DB to send structured expression data alongside compiled SQL strings. Changes: - Add SerializedExpression and SerializedOrderByClause types - Add compileExpression() and compileOrderBy() functions for expression compilation - Update SubsetParams to include whereExpr and orderByExpr fields - Update client to prefer structured expressions when available - Add new query params: subset__where_expr, subset__order_by_expr When structured expressions are provided, the client compiles them with columnMapper applied, allowing transformations like camelCase → snake_case to work correctly for subset queries.
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Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #3629 +/- ##
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+ Coverage 87.79% 87.81% +0.02%
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Files 18 19 +1
Lines 1663 1740 +77
Branches 415 458 +43
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+ Hits 1460 1528 +68
- Misses 201 210 +9
Partials 2 2
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This was referenced Dec 19, 2025
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Builds on TanStack/db#1042
Add support for structured expressions in subset queries to enable proper columnMapper transformations for column names. This enables TanStack DB to send structured expression data alongside compiled SQL strings.
Changes:
When structured expressions are provided, the client compiles them with columnMapper applied, allowing transformations like camelCase → snake_case to work correctly for subset queries.