platform-soql-query

platform-soql-query: Salesforce SOQL Query Expert

Use this skill when the user needs SOQL/SOSL authoring or optimization: natural-language-to-query generation, relationship queries, aggregates, query-plan analysis, and performance/safety improvements for Salesforce queries.

When This Skill Owns the Task

Use platform-soql-query when the work involves:

• .soql files
• query generation from natural language
• relationship queries and aggregate queries
• query optimization and selectivity analysis
• SOQL/SOSL syntax and governor-aware design

Delegate elsewhere when the user is:

• performing bulk data operations → [platform-data-manage](../platform-data-manage/SKILL.md)
• embedding query logic inside broader Apex implementation → [platform-apex-generate](../platform-apex-generate/SKILL.md)
• debugging via logs rather than query shape → [platform-apex-logs-debug](../platform-apex-logs-debug/SKILL.md)

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Required Context to Gather First

Ask for or infer:

• target object(s)
• fields needed
• filter criteria
• sort / limit requirements
• whether the query is for display, automation, reporting-like analysis, or Apex usage
• whether performance / selectivity is already a concern

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Recommended Workflow

1. Generate the simplest correct query

Prefer:

• only needed fields
• clear WHERE criteria
• reasonable LIMIT when appropriate
• relationship depth only as deep as necessary

2. Choose the right query shape

| Need | Default pattern |

|---|---|

| parent data from child | child-to-parent traversal |

| child rows from parent | subquery |

| counts / rollups | aggregate query |

| records with / without related rows | semi-join / anti-join |

| text search across objects | SOSL |

3. Optimize for selectivity and safety

Check:

• indexed / selective filters
• no unnecessary fields
• no avoidable wildcard or scan-heavy patterns
• security enforcement expectations

4. Validate execution path if needed

If the user wants runtime verification, hand off execution to:

• [platform-data-manage](../platform-data-manage/SKILL.md)

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High-Signal Rules

• never use SELECT * style thinking; query only required fields
• do not query inside loops in Apex contexts
• prefer filtering in SOQL rather than post-filtering in Apex
• use aggregates for counts and grouped summaries instead of loading unnecessary records
• evaluate wildcard usage carefully; leading wildcards often defeat indexes
• account for security mode / field access requirements when queries move into Apex

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Output Format

When finishing, report in this order:

1. Query purpose
2. Final SOQL/SOSL
3. Why this shape was chosen
4. Optimization or security notes
5. Execution suggestion if needed

Suggested shape — use references/soql-syntax-reference.md for exact syntax:

Query goal: <summary>
Query: <soql or sosl>
Design: <relationship / aggregate / filter choices>
Notes: <selectivity, limits, security, governor awareness>
Next step: <run in platform-data-manage or embed in Apex>

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Cross-Skill Integration

| Need | Delegate to | Reason |

|---|---|---|

| run the query against an org | [platform-data-manage](../platform-data-manage/SKILL.md) | execution and export |

| embed the query in services/selectors | [platform-apex-generate](../platform-apex-generate/SKILL.md) | implementation context |

| analyze slow-query symptoms from logs | [platform-apex-logs-debug](../platform-apex-logs-debug/SKILL.md) | runtime evidence |

| wire query-backed UI | [experience-lwc-generate](../experience-lwc-generate/SKILL.md) | frontend integration |

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Score Guide

| Score | Meaning |

|---|---|

| 90+ | production-optimized query |

| 80–89 | good query with minor improvements possible |

| 70–79 | functional but performance concerns remain |

| < 70 | needs revision before production use |

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Reference File Index

| File | When to read |

|------|-------------|

| references/soql-syntax-reference.md | Syntax, operators, date literals, relationship query patterns |

| references/query-optimization.md | Selectivity rules, indexing strategy, governor limits, security patterns |

| references/soql-reference.md | Quick reference — operators, date functions, aggregate functions, WITH clauses |

| references/anti-patterns.md | Common SOQL mistakes and their fixes — read before finalizing any query |

| references/selector-patterns.md | Apex selector layer patterns — read when embedding queries in Apex classes |

| references/field-coverage-rules.md | Field coverage validation — read when generating SOQL used inside Apex code |

| references/cli-commands.md | sf CLI query execution, bulk export, query plan commands |

| assets/basic-queries.soql | Starter query examples for common objects |

| assets/relationship-queries.soql | Parent-to-child and child-to-parent relationship query patterns |

| assets/aggregate-queries.soql | COUNT, SUM, GROUP BY, ROLLUP query patterns |

| assets/optimization-patterns.soql | Selective filter and index-aware query patterns |

| assets/bulkified-query-pattern.cls | Apex Map-based bulk query pattern for trigger contexts |

| assets/selector-class.cls | Full selector class implementation template |

| scripts/post-tool-validate.py | Post-write hook — runs static SOQL validation and live query plan analysis after .soql file edits |