branch-4.0: [fix](search) Fix wildcard query on variant subcolumns returning empty results #60793#61018
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airborne12 wants to merge 7 commits intoapache:branch-4.0from
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branch-4.0: [fix](search) Fix wildcard query on variant subcolumns returning empty results #60793#61018airborne12 wants to merge 7 commits intoapache:branch-4.0from
airborne12 wants to merge 7 commits intoapache:branch-4.0from
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…pache#59747) ### What problem does this PR solve? Issue Number: close #xxx Related PR: apache#59394 Problem Summary: The search DSL should only recognize uppercase `AND`, `OR`, `NOT` as boolean operators in search lucene boolean mode. Previously, lowercase `and`, `or`, `not` were also treated as operators, which does not conform to the specification. This PR makes the boolean operators case-sensitive: - Only uppercase `AND`, `OR`, `NOT` are recognized as operators - Lowercase `and`, `or`, `not` are now treated as regular search terms - Using lowercase operators in DSL will result in a parse error ### Release note Make search DSL boolean operators (AND/OR/NOT) case-sensitive in lucene boolean mode.
…sing and fix ES compatibility issues (apache#60654) Problem Summary: The `search()` function's DSL parser had multiple ES compatibility issues and used a two-phase parsing approach (manual pre-parse + ANTLR) that was error-prone. This PR refactors the parser and fixes several bugs: 1. **SearchDslParser refactoring**: Consolidated from two-phase (manual pre-parse + ANTLR) to single-phase ANTLR parsing. The ANTLR grammar now handles all DSL syntax directly, eliminating the fragile manual pre-parse layer. This fixes issues with operator precedence, grouping, and edge cases. 2. **ANTLR grammar improvements**: Updated `SearchLexer.g4` and `SearchParser.g4` to properly handle quoted phrases, field-qualified expressions, prefix/wildcard/regexp patterns, range queries, and boolean operators with correct precedence. 3. **minimum_should_match pipeline**: Added `default_operator` and `minimum_should_match` fields to `TSearchParam` thrift, passing them from FE `SearchPredicate` through to BE `function_search`. When `minimum_should_match > 0`, uses `OccurBooleanQuery` for proper Lucene-style boolean query semantics. 4. **Wildcard/Prefix/Regexp case-sensitivity**: Wildcard and PREFIX patterns are now lowercased when the index has `parser + lower_case=true` (matching ES query_string normalizer behavior). REGEXP patterns are NOT lowercased (matching ES regex behavior where patterns bypass analysis). 5. **MATCH_ALL_DOCS support**: Added `MATCH_ALL_DOCS` clause type for standalone `*` queries and pure NOT query rewrites. Enhanced `AllQuery` with deferred `max_doc` from `context.segment_num_rows` and nullable field support via `NullableScorer`. 6. **BE fixes**: - `regexp_weight._max_expansions`: Changed from 50 to 0 (unlimited) to prevent PREFIX queries from missing documents - `occur_boolean_weight`: Fixed swap→append bug when all SHOULD clauses must match, preserving existing MUST scorers - Variant subcolumn `index_properties` propagation for proper analyzer selection - `lower_case` default handling: inverted index `lower_case` defaults to `"true"` when a parser is configured
…-based indexes (apache#60782) ### What problem does this PR solve? Issue Number: close #xxx Related PR: apache#60654 Problem Summary: Follow-up fix for apache#60654 (SearchDslParser refactoring). When FE resolves a variant subcolumn field pattern to a specific analyzer-based index and sends its `index_properties` via `TSearchFieldBinding`, the BE `FieldReaderResolver` was using `EQUAL_QUERY` for TERM clauses. This caused `select_best_reader` to pick the `STRING_TYPE` reader (untokenized index directory) instead of the `FULLTEXT` reader, so tokenized search terms would never match. **Root cause**: For variant subcolumns with analyzer-based indexes, `EQUAL_QUERY` opens the wrong (untokenized) index directory. The query type needs to be upgraded to `MATCH_ANY_QUERY` so `select_best_reader` picks the correct FULLTEXT reader. **Fix**: In `FieldReaderResolver::resolve()`, when the field is a variant subcolumn and the FE-provided `index_properties` indicate an analyzer-based index (`should_analyzer()` returns true), automatically upgrade `EQUAL_QUERY` to `MATCH_ANY_QUERY` before calling `select_best_reader`. Also reuse the `fb_it` iterator to avoid a redundant map lookup.
…mode (apache#60784) ### What problem does this PR solve? Issue Number: close Problem Summary: When using `search('*', ...)` with multi-field options (`fields` parameter), the query fails with: ``` only inverted index queries are supported ``` The root cause is in `SearchDslParser.java`: the multi-field parsing methods (`parseDslMultiFieldMode` and `parseDslMultiFieldLuceneMode`) collect field bindings by calling `collectFieldNames()` on the expanded AST. When the query is `*` (match all), the AST node is `MATCH_ALL_DOCS` which has no field set — by design it matches all documents regardless of field. This caused `collectFieldNames` to return an empty set, resulting in no field bindings. Without field bindings, `RewriteSearchToSlots` couldn't create slot references, so the search expression was never pushed down to the inverted index path, and BE fell back to `execute_impl()` which returns the error. **Fix**: After `collectFieldNames()`, if the result is empty, fall back to using the original `fields` list as field bindings. This ensures the push-down mechanism works for `MATCH_ALL_DOCS` queries. **Reproducing queries** (from bug report): ```sql select count(*) from wikipedia where search('*', '{"fields":["title", "content"], "type": "best_fields", "default_operator":"AND","mode":"lucene", "minimum_should_match": 0}'); select count(*) from wikipedia where search('*', '{"default_field": "title", "default_operator":"AND","mode":"lucene", "minimum_should_match": 0}'); ```
…m2) (apache#60786) ### What problem does this PR solve? Issue Number: close #N/A Problem Summary: The `search()` function did not support ES `query_string` field-grouped syntax where all terms inside parentheses inherit the field prefix: ```sql -- Previously failed with syntax error SELECT * FROM t WHERE search('title:(rock OR jazz)', '{"fields":["title","content"]}'); ``` ES semantics: | Input | Expansion | |-------|-----------| | `title:(rock OR jazz)` | `(title:rock OR title:jazz)` | | `title:(rock jazz)` with `default_operator:AND` | `(+title:rock +title:jazz)` | | `title:(rock OR jazz) AND music` with `fields:[title,content]` | `(title:rock OR title:jazz) AND (title:music OR content:music)` | | `title:("rock and roll" OR jazz)` | `(title:"rock and roll" OR title:jazz)` | ### Root cause The ANTLR grammar `SearchParser.g4` defined `fieldQuery : fieldPath COLON searchValue` where `searchValue` only accepts leaf values (TERM, QUOTED, etc.), not a parenthesized sub-clause. So `title:(` caused a syntax error. ### Solution **Grammar** (`SearchParser.g4`): - Add `fieldGroupQuery : fieldPath COLON LPAREN clause RPAREN` rule - Add it as alternative in `atomClause` before `fieldQuery` **Visitor** (`SearchDslParser.java`): - Add `markExplicitFieldRecursive()` helper — marks all leaf nodes in a group as `explicitField=true` to prevent `MultiFieldExpander` from re-expanding them across unintended fields - Modify `visitBareQuery()` in both `QsAstBuilder` and `QsLuceneModeAstBuilder` to use `currentFieldName` as field group context when set - Add `visitFieldGroupQuery()` to both AST builders: sets field context, visits inner clause, marks all leaves explicit - Update `visitAtomClause()` and `collectTermsFromNotClause()` to handle
…h() function (apache#60790) ### What problem does this PR solve? Problem Summary: This PR adds searcher cache reuse and a DSL result cache for the `search()` function to improve query performance on repeated search queries against the same segments. **Key changes:** 1. **DSL result cache**: Caches the final roaring bitmap per (segment, DSL) pair so repeated identical `search()` queries skip Lucene execution entirely. Uses length-prefix key encoding to avoid hash collisions. 2. **Deep-copy bitmap semantics**: Bitmaps are deep-copied on both cache read and write to prevent `mask_out_null()` from polluting cached entries. 3. **Type-safe cache accessor**: Replaces raw `void*` return with a template `get_value<T>()` that uses `static_assert` to ensure T derives from `LRUCacheValueBase`. 4. **Session-level cache toggle**: Adds `enable_search_function_query_cache` session variable (default: true) to allow disabling the cache per query via `SET_VAR`. 5. **Const-correctness fix**: Removes unsafe `const_cast` in `build_dsl_signature` by copying TSearchParam before Thrift serialization. 6. **Defensive improvements**: Adds null check for `result_bitmap` on cache hit, logging for serialization fallback and cache bypass paths. ### Release note Add DSL result cache for search() function to skip repeated Lucene execution on identical queries.
…y results (apache#60793) ### What problem does this PR solve? Related PR: apache#60782 Problem Summary: When `search()` DSL uses wildcard patterns (e.g. `*ith`, `sm*th`, `sm?th`) on variant subcolumns with analyzer-based indexes (field_pattern), the queries return empty results even though regular TERM search works correctly. **Root cause:** In `FieldReaderResolver::resolve()`, only `EQUAL_QUERY` was upgraded to `MATCH_ANY_QUERY` for variant subcolumns with analyzer-based indexes. `WILDCARD_QUERY` was not upgraded, so `select_best_reader()` picked the `STRING_TYPE` reader instead of `FULLTEXT`. `WildcardWeight` then enumerated terms from the wrong (untokenized) index directory, finding no matches. **Fix:** Extend the query type upgrade condition to also cover `WILDCARD_QUERY`, so wildcard patterns correctly use the FULLTEXT index on variant subcolumns. Also fix a misleading comment in `inverted_index_iterator.cpp` where `is_equal_query()` was described as handling WILDCARD/REGEXP but actually only checks `EQUAL_QUERY`.
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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Superseded by squashed backport PR #61028 |
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PR 7/12 in the search() pick chain. Depends on #61013(#60654).
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