feat(query): Support extended expression queries - #19
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Add a SQL-shaped expression language on top of the existing Query DSL. SheetQuerySpec.Parse first tries the legacy parser and falls back to the new expression parser, so existing queries keep their behavior. The new language adds SELECT-first syntax, parentheses with AND/OR/NOT, IN, IS NULL and IS EMPTY, column-to-column comparisons, arithmetic and date functions, FILTER (WHERE ...) on aggregates, expression GROUP BY, HAVING, and AS aliases. Values are typed; an incompatible or missing operand evaluates to unknown so dirty cells stay out of positive and negated filters. Also allow LIMIT 0 to bind headers and return no data rows, and expose WithGroupLimit to tune the retained group-state cap. SheetQuery now scans through the internal IQueryScan abstraction so expression and legacy scans share the same projection and range paths.
Add ExpressionQueryBenchmarks to measure the extended query language against an equivalent direct reader loop across low and high group cardinality. The benchmark generates its own workbook, so it needs no external data. Ignore scripts/query-oracle/ alongside bench/ and docs/: the DuckDB parity oracle depends on an external workbook and local absolute paths, so it stays a local development artifact.
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This repository does not receive automatic reviews because it has fewer than 10 stars. ⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Advanced Run ID: WalkthroughThe query library adds expression-based queries with parsing, evaluation, grouping, aggregation, filtering, ordering, and synchronous and asynchronous execution. The change also adds tests and benchmarks, updates Query DSL documentation, and refreshes package metadata. ChangesExpression Query Support
Build Metadata Updates
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Sequence Diagram(s)sequenceDiagram
participant SheetQuerySpec
participant ExcelWorkbookQueryExtensions
participant SheetQuery
participant ExpressionQueryScan
SheetQuerySpec->>ExcelWorkbookQueryExtensions: provide parsed expression plan
ExcelWorkbookQueryExtensions->>SheetQuery: configure group limit and expression plan
SheetQuery->>ExpressionQueryScan: execute query
ExpressionQueryScan->>SheetQuery: return query result
Merge Risk: 🔵 Low · up to Expression queries with unusual decimal-and-letter text, such as 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 9.26% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 216 functions across 27 files. (6 skipped: 6 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Correct alias resolution, header handling, aggregate validation, numeric overflow, diagnostic counting, ordering ties, and LIMIT 0 behavior so extended queries produce consistent results across execution paths. Add 63 regression cases and document query semantics. Validation passed the Release build, 927 tests, five independent workbook oracle cases, and four million-row stress probes.
Replace the vulnerable Microsoft.Build.Tasks.Git dependency pulled in by SourceLink. Regenerate lock files with CI=true and verify audited locked restore and Release build.
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Review comments at @src/XLSight.Query/Internal/ExtendedQueryParser.cs:
- Around line 1084-1085: Update the exponent check in the number-parsing method
of ExtendedQueryParser so it consumes e or E only when followed by a digit, or
by a sign followed by a digit. Preserve the existing identifier handling for
inputs such as 2e, and ensure incomplete exponents such as 2.5e and 2.5east are
not emitted as invalid number tokens.
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📒 Files selected for processing (34)
.gitignoreDirectory.Packages.propsbenchmarks/XLSight.Benchmarks/ExpressionQueryBenchmarks.csbenchmarks/XLSight.Benchmarks/packages.lock.jsonsrc/XLSight.Query/ExcelWorkbookQueryExtensions.cssrc/XLSight.Query/Internal/AggregateAccumulator.cssrc/XLSight.Query/Internal/AggregateExpression.cssrc/XLSight.Query/Internal/BinaryExpression.cssrc/XLSight.Query/Internal/ColumnExpression.cssrc/XLSight.Query/Internal/EmptyExpression.cssrc/XLSight.Query/Internal/ExpressionEvaluator.cssrc/XLSight.Query/Internal/ExpressionQueryScan.cssrc/XLSight.Query/Internal/ExpressionText.cssrc/XLSight.Query/Internal/ExtendedQueryParser.cssrc/XLSight.Query/Internal/ExtendedQueryPlan.cssrc/XLSight.Query/Internal/FilterEvaluator.cssrc/XLSight.Query/Internal/FunctionExpression.cssrc/XLSight.Query/Internal/IQueryScan.cssrc/XLSight.Query/Internal/InExpression.cssrc/XLSight.Query/Internal/LiteralExpression.cssrc/XLSight.Query/Internal/QueryDslParser.cssrc/XLSight.Query/Internal/QueryExpression.cssrc/XLSight.Query/Internal/QueryScan.cssrc/XLSight.Query/Internal/QuerySelection.cssrc/XLSight.Query/Internal/UnaryExpression.cssrc/XLSight.Query/README.mdsrc/XLSight.Query/SheetQuery.cssrc/XLSight.Query/SheetQuerySpec.cstests/XLSight.Layout.Tests/packages.lock.jsontests/XLSight.Tests/Query/ExtendedQueryRegressionTests.cstests/XLSight.Tests/Query/ExtendedQueryTests.cstests/XLSight.Tests/Query/Infrastructure/SalesWorkbook.cstests/XLSight.Tests/Query/QueryDslTests.cstests/XLSight.Tests/packages.lock.json
💤 Files with no reviewable changes (1)
- tests/XLSight.Tests/Query/QueryDslTests.cs
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Recognize exponents only when a digit follows the marker and optional sign. Preserve identifier parsing for incomplete exponents, including decimal prefixes, and keep arithmetic operators separate from those identifiers. Add regressions for exponent-like names, operators, and valid scientific notation.
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The query DSL now supports computed selections and aliases, typed Boolean expressions,
arithmetic and date functions, conditional aggregates, composite grouping, and HAVING.
Queries can use either SELECT-first or the existing FROM-first syntax and execute through
the same synchronous and asynchronous workbook APIs.
Existing simple queries keep their execution path and syntax compatibility. Expression
queries resolve source columns separately from HAVING and ORDER BY aliases, preserve
unknown values in filters, and reject invalid aggregate shapes during parsing. Group
state is capped at 10,000 by default and can be configured through WithGroupLimit;
ordered LIMIT queries retain only the best result rows during finalization.
Regression coverage addresses alias collisions, missing headers, numeric overflow,
duplicate aggregate diagnostics, stable ordering ties, and LIMIT 0. The Release build
and all 927 tests passed, including 63 new regression cases. Five independent workbook
oracle cases and four million-row probes also passed. BenchmarkDotNet scenarios compare
expression execution with direct-reader equivalents; benchmark timings were not refreshed.
The query README documents the language and value semantics.
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