[vitali87]

Summary

• Problem: a .sql file is one tree-sitter tree, and tree-sitter-sql 0.3.11 does not always resynchronize at the next ;. Every well-formed CREATE FUNCTION inside the damaged region vanished from the graph with all its calls, and the sync logged nothing. The triggers:
  • f($1,$2) lexes $1,$ as a dollar-quote tag, which runs to the next $1,$. In the issue's repro, calc and total are missing and add keeps one caller of three.
  • The legal identifier do$llar$s opens a quote at $llar$.
  • A plpgsql body the grammar cannot parse loses its own function.
• Fix: new codebase_rag/parsers/sql_recovery.parse_sql, the SQL branch of parse_with_preproc_recovery. Every parse site uses it: definitions, the call pass's reload, gloss anchors and, newly, the waiter-name parse of an added file.
  • It is a last resort. A file whose own tree has every function keeps that tree byte for byte, even with an ERROR elsewhere.
  • When a function is lost, it re-parses a copy of the same length, newlines kept, so lines and columns are unchanged. In that copy each statement stands alone:
    • a positional parameter's $ reads _ ($1 → _1), so no $1,$ tag can form;
    • a CREATE FUNCTION that parses on its own is kept as written, and its body's calls survive;
    • one that does not parse on its own gets its dollar-quoted body turned into an equally long string literal. The grammar takes AS '…' as a body, so the name, parameters and span survive. Only if even the header fails is the statement blanked;
    • if functions are still missing, a function that parses alone only with an error falls back to that clean hollow form, and then any other statement that fails on its own (such as CREATE TABLE do$llar$s) is blanked.
  • Statements are split by PostgreSQL's lexical rules: comments, '…' and E'…', "…", and dollar quotes whose tag is empty or identifier-like and never starts inside an identifier. The tree that finds the most functions wins.
  • The definition pass logs a per-file warning with the count of CREATE FUNCTION statements still missing, for example pairs.sql: 1 CREATE FUNCTION statement(s) could not be parsed and are not in the graph (… OUT/INOUT parameters).
• Measured (CREATE FUNCTION statements found, before → after):
  • timescale/timescaledb sql/ @ HEAD: 338 → 365 of 378.
  • PostgREST test/spec/fixtures @ HEAD: 108 → 227 of 232.
  • Every remaining one has a header the grammar cannot read (OUT/INOUT parameters, a few RETURNS TABLE/SET clauses), and each is now reported.
• Not here:
  • CREATE PROCEDURE is still not a node (the grammar does not model it).
  • OUT/INOUT headers are reported, not recovered.
  • The upstream lexer report.

Demo

The GIF plays the session step by step. The issue's sqlpp schema, verbatim, plus a two-line pairs.sql with an OUT/INOUT header, is indexed with cgr start against Memgraph. The demo then runs the issue's graph resolve loop and graph callers of add.

• main:
  • calc [], total [];
  • callers of add: [schema.add3];
  • no warning.
• This branch:
  • all five functions resolve;
  • callers of add: [schema.add3, schema.calc, schema.total];
  • cgr start warns pairs.sql: 1 CREATE FUNCTION statement(s) could not be parsed ….

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement

Related Issues

Fixes #3180

Test Plan

• All existing unit tests pass (make test): related suites run, full suite see below
• New tests added for new functionality
• Integration tests pass (if applicable)
• Manual testing performed

Red/green TDD in codebase_rag/tests/test_sql_statement_isolation.py, a real index into the stateful in-memory graph.

• Red on main (87a8f58): 6 failed, 6 passed.
  • test_every_repro_function_is_indexed_on_its_own_lines: the repro verbatim, all five functions on their original lines (calc 7–8, total 10–11).
  • test_every_repro_call_is_linked: all five CALLS. add3's own add($1,$2) keeps its calls, because a body that parses is not hollowed.
  • test_a_function_after_a_statement_the_grammar_cannot_read_is_indexed[identifier-dollar]: CREATE TABLE do$llar$s (a$num$ numeric) before two functions.
  • test_a_function_whose_plpgsql_body_does_not_parse_keeps_its_node: loud (RAISE / PERFORM body) keeps its node and span (2–7).
  • test_an_unreadable_header_is_reported_by_file_and_count: the warning text for one OUT/INOUT function.
  • test_a_recovered_routine_reaches_a_caller_added_before_it: incremental. A caller waits on calc; the added repro file's waiter names come from the recovered parse, so the caller is re-linked.
• Green on this branch: 12 passed.
• Regression guards and negatives (pass on main and here):
  • [procedure] and [nested-dollar-tags] ($_$ … $exec$ … $exec$ … $_$): neighbours stay indexed.
  • [plpgsql-body]: the next functions stay indexed.
  • test_a_recovered_file_logs_no_lost_function: a fully recovered file warns nothing.
  • test_a_file_that_loses_no_function_is_parsed_as_written, [no-error] and [error-that-loses-no-function] (a CREATE AGGREGATE ERROR): the tree's text equals the source, $1 included.
• Mutation checks, each caught:
  • no $N rewrite → the repro, no-warning and incremental tests fail (4);
  • blank instead of hollow → the plpgsql node test fails;
  • hollow as $$ $$ instead of a string literal → the same test fails;
  • never blank failing non-functions → [identifier-dollar] fails;
  • rewriting a file that lost nothing (ties go to the re-parse) → [error-that-loses-no-function] fails;
  • a plain parse for waiter names → the incremental test fails.
• Wider runs:
  • Full suite: 17,719 passed, 176 skipped, 109 failed. All 109 failures are in the baseline on main (LLM, token, MCP-query and dependency-patch tests that need network or keys).
  • ruff check, ruff format and ty are clean.
  • Full suite with Memgraph: queued in the local serial runner; the result is added to this description when it lands. CI runs it too.
• Manual: the demo above.

Checklist

• My code follows the Conventional Commits format
• I have run pre-commit hooks locally: ruff, ruff format and ty were run by hand on the changed files
• No hardcoded strings (all in constants or StrEnum)
• No # type: ignore, cast(), Any, or object type hints
• Comments explain why, not what

🤖 Generated with Claude Code

https://claude.ai/code/session_01EbsCWQcSTGQXv3g5sk418m

---

Generated by Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Improved source-code indexing when files contain preprocessing directives, helping function and class definitions remain discoverable.
  • Improved SQL parsing for files containing routines that were previously difficult to parse, including routines with dollar signs in identifiers and complex procedure bodies.
  • Preserved SQL routine indexing and call relationships when other statements in the same file cannot be parsed.
  • Added warnings when SQL functions cannot be parsed and may be missing from the graph.

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-09T15:05:20.016986Z	6a5d28a	PR opened

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📥 Commits

Reviewing files that changed from the base of the PR and between 9008691 and b2e00c5.

📒 Files selected for processing: 6

• codebase_rag/graph_updater.py
• codebase_rag/logs.py
• codebase_rag/parsers/cpp/preproc_recovery.py
• codebase_rag/parsers/definition_processor.py
• codebase_rag/parsers/sql_recovery.py
• codebase_rag/tests/test_sql_statement_isolation.py

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📝 Walkthrough

SQL parsing now uses statement-aware recovery to retain function nodes that the initial parse misses. Indexing checks for functions still absent from the parsed tree and logs their count. Tests cover recovery, indexing, warnings, and incremental call linking.

Changes: SQL function recovery

Layer / File(s)	Summary
SQL parse recovery codebase_rag/parsers/sql_recovery.py, codebase_rag/parsers/cpp/preproc_recovery.py	SQL input is routed through parse_sql. Recovery isolates statements while accounting for comments and quoted content, then retries parsing with positional-parameter substitutions and selected content blanked.
Indexing and loss reporting codebase_rag/parsers/definition_processor.py, codebase_rag/logs.py, codebase_rag/graph_updater.py, codebase_rag/tests/test_sql_statement_isolation.py	DefinitionProcessor counts SQL functions missing from the parsed tree and logs a warning when the count is nonzero. GraphUpdater uses the recovery parsing path to collect simple names. Tests cover function indexing, call links, warnings, preserved source text, and incremental indexing.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant DefinitionProcessor
  participant Recovery as parse_with_preproc_recovery
  participant SQLRecovery as parse_sql
  participant Parser
  participant LostFunctions as lost_sql_functions
  DefinitionProcessor->>Recovery: Parse SQL source
  Recovery->>SQLRecovery: Route SQL input
  SQLRecovery->>Parser: Parse source and recovery retries
  Parser-->>SQLRecovery: Parse trees
  SQLRecovery-->>DefinitionProcessor: Recovered tree
  DefinitionProcessor->>LostFunctions: Count missing function nodes
  LostFunctions-->>DefinitionProcessor: Missing function count

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Suggested reviewers: claude

Merge Risk: ⚪ Minimal · up to b2e00

The previously identified function-loss issue is fixed. No actionable merge-blocking risk remains in the supplied evidence.

Pre-merge checks: 3 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Linked Issues check		The implementation satisfies the main [#3180] function-recovery requirement. parse_sql isolates SQL statements, preserves recoverable CREATE FUNCTION nodes and spans, and the tests cover $1,$2, …	Add dropped-routine accounting for both CREATE FUNCTION and CREATE PROCEDURE. Report dropped procedures and include the dropped-routine total in the sync summary. Add automated tests for procedure-loss reporting and summary accounting.

Passed checks: 3 passed

Check name	Status	Explanation
Title check		The title is concise, follows Conventional Commits format, and clearly describes the SQL recovery fix that limits grammar failures to individual statements.
Description check		The description follows the required template and provides the problem, fix, scope, demo, related issue, test results, limitations, and checklist status. It clearly reports the known baseline failures…
Out of Scope Changes check		The changed parser, SQL loss warning, added-file waiter parsing, and regression tests support [#3180]. No unrelated change is demonstrated.

Full details: Description check

Explanation

The description follows the required template and provides the problem, fix, scope, demo, related issue, test results, limitations, and checklist status. It clearly reports the known baseline failures and pending Memgraph run.

Full details: Linked Issues check

Explanation

The implementation satisfies the main [#3180] function-recovery requirement. parse_sql isolates SQL statements, preserves recoverable CREATE FUNCTION nodes and spans, and the tests cover $1,$2, identifier-dollar syntax, procedures between functions, nested dollar tags, unreadable bodies, and missing-function warnings. The linked issue also requires reporting dropped routines, including CREATE PROCEDURE, and including the dropped-routine total in the sync summary. The reviewed code counts only CREATE FUNCTION statements through lost_sql_functions and logs only SQL_FUNCTIONS_UNPARSED; it provides no procedure accounting or sync-summary total.

Resolution

Add dropped-routine accounting for both CREATE FUNCTION and CREATE PROCEDURE. Report dropped procedures and include the dropped-routine total in the sync summary. Add automated tests for procedure-loss reporting and summary accounting.

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 6a5d28a9ef

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[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge; no new blocking issue was established.

Summary

The PR recovers SQL functions when another statement prevents the grammar from reading them.

• SQL files keep readable functions when another statement disrupts parsing.
• SQL indexing warns when function statements are still missing.

_{Reviews (2) · Last reviewed commit: "fix(sql): keep quoted names whole in the..." · Reviewed by Greptile}

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Actionable comments posted: 1

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Inline comments:
Review comments at @codebase_rag/parsers/sql_recovery.py:
- Line 265: Update the double-quoted identifier branch in the masking function
to mark the skipped identifier content as blanked, so `_statements` ignores
semicolons inside quoted identifiers while preserving the existing escape
behavior.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
91.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[vitali87]

@greptile review