Fix invalid SQL from Maintenance dialog REINDEX ... CONCURRENTLY

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Summary

Running REINDEX with "Concurrently" enabled from the Maintenance dialog generated invalid SQL:

REINDEX (VERBOSE, CONCURRENTLY) TABLE public."Command";
-- ERROR: syntax error at or near "CONCURRENTLY"

CONCURRENTLY was being appended to the parenthesised option list alongside VERBOSE/TABLESPACE/etc., but it isn't a parenthesizable REINDEX option. Per the PostgreSQL grammar it must appear standalone, between the target type keyword (TABLE/INDEX/SCHEMA/DATABASE) and the target name:

REINDEX (VERBOSE) TABLE CONCURRENTLY public."Command";

Fixes #10251.

Test plan

• Updated the three existing unit tests that had been asserting the invalid SQL to expect the corrected syntax
• python regression/runtests.py --pkg tools.maintenance passes (69/69) against a live PostgreSQL 18 server

Summary by CodeRabbit

• Bug Fixes
  • Corrected generated SQL for concurrent reindexing so CONCURRENTLY appears in the proper position for databases, schemas, tables, and indexes.
  • Added coverage for concurrent schema reindexing, including its PostgreSQL 12 version requirement.

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• web/pgadmin/tools/maintenance/tests/test_maintenance_create_job_unit_test.py

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Walkthrough

The maintenance SQL template now places CONCURRENTLY after applicable REINDEX target keywords instead of inside the parenthesized options. Unit tests update expected SQL and add coverage for concurrent schema reindexing with PostgreSQL 12 version gating.

Changes

REINDEX CONCURRENTLY syntax

Layer / File(s)	Summary
REINDEX SQL generation and validation web/pgadmin/tools/maintenance/templates/maintenance/sql/command.sql, web/pgadmin/tools/maintenance/tests/test_maintenance_create_job_unit_test.py	The template emits CONCURRENTLY after the applicable target keyword. Tests verify the updated SQL for database, table, and index targets, and add schema coverage with PostgreSQL 12 version gating.

Estimated code review effort: 2 (Simple) | ~8 minutes

Suggested reviewers: hiteshjambhale

Merge Risk: ⚪ Minimal · up to 9d7c7

The documented REINDEX SQL syntax fix appears ready to merge after normal checks.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The template fixes CONCURRENTLY placement for INDEX, DATABASE, SCHEMA, and TABLE targets. The SYSTEM branch still emits REINDEX SYSTEM ... without CONCURRENTLY when data.reindex_concurrently i…	Update the SYSTEM branch to emit SYSTEM CONCURRENTLY <database> when data.reindex_concurrently is enabled. Add a unit test for the SYSTEM target with the supported PostgreSQL version condition.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main change: fixing invalid REINDEX CONCURRENTLY SQL generated by the Maintenance dialog.
Out of Scope Changes check	✅ Passed	The pull request changes only the Maintenance REINDEX SQL template and its expected unit-test output. These changes directly support issue #10251 and do not introduce unrelated product changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…

Full details: Linked Issues check

Explanation

The template fixes CONCURRENTLY placement for INDEX, DATABASE, SCHEMA, and TABLE targets. The SYSTEM branch still emits REINDEX SYSTEM ... without CONCURRENTLY when data.reindex_concurrently is enabled. Issue #10251 requires the corrected standalone keyword for REINDEX targets, including SYSTEM. The updated tests cover database, schema, table, and index cases, but no SYSTEM case.

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Inline comments:
In `@web/pgadmin/tools/maintenance/templates/maintenance/sql/command.sql`:
- Line 27: Add regression coverage for the schema reindexing case by setting
reindex_concurrently=True and asserting the generated SQL is REINDEX (VERBOSE)
SCHEMA CONCURRENTLY my_schema;. Keep the existing UI behavior for system
reindexing unchanged.

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• pkg/helm/templates/deployment.yaml
• web/pgadmin/tools/maintenance/templates/maintenance/sql/command.sql
• web/pgadmin/tools/maintenance/tests/test_maintenance_create_job_unit_test.py

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[dpage]

Rebased this branch onto current upstream/master to pick up the CI Yarn-setup fix and other master-side fixes the branch had drifted behind, which is why every check was failing. Also dropped an unrelated commit (bd252cae, the Helm existingSecret fix from #10313) that had ended up riding along on this branch. The diff now contains only this PR's two commits: the CONCURRENTLY placement fix and its added test coverage. Targeted test (test_maintenance_create_job_unit_test) still passes after the rebase.