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:
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
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:
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
Output Format
When finishing, report in this order:
- Query purpose
- Final SOQL/SOSL
- Why this shape was chosen
- Optimization or security notes
- 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>
Cross-Skill Integration
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 |
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 |
1---2name: platform-soql-query3description: SOQL query generation, optimization, and analysis with 100-point scoring. 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 or safety improvements for Salesforce queries. TRIGGER when: user writes, optimizes, or debugs SOQL/SOSL queries, touches .soql files, or asks about relationship queries, aggregates, or query performance. DO NOT TRIGGER when: bulk data operations (use platform-data-manage), Apex DML logic (use platform-apex-generate), or report/dashboard queries.4---5
6# platform-soql-query: Salesforce SOQL Query Expert
7
8Use 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.
9
10## When This Skill Owns the Task
11
12Use `platform-soql-query` when the work involves:
13- `.soql` files
14- query generation from natural language
15- relationship queries and aggregate queries
16- query optimization and selectivity analysis
17- SOQL/SOSL syntax and governor-aware design
18
19Delegate elsewhere when the user is:
20- performing bulk data operations → [platform-data-manage](../platform-data-manage/SKILL.md)
21- embedding query logic inside broader Apex implementation → [platform-apex-generate](../platform-apex-generate/SKILL.md)
22- debugging via logs rather than query shape → [platform-apex-logs-debug](../platform-apex-logs-debug/SKILL.md)
23
24---
25
26## Required Context to Gather First
27
28Ask for or infer:
29- target object(s)
30- fields needed
31- filter criteria
32- sort / limit requirements
33- whether the query is for display, automation, reporting-like analysis, or Apex usage
34- whether performance / selectivity is already a concern
35
36---
37
38## Recommended Workflow
39
40### 1. Generate the simplest correct query
41Prefer:
42- only needed fields
43- clear WHERE criteria
44- reasonable LIMIT when appropriate
45- relationship depth only as deep as necessary
46
47### 2. Choose the right query shape
48| Need | Default pattern |
49|---|---|
50| parent data from child | child-to-parent traversal |
51| child rows from parent | subquery |
52| counts / rollups | aggregate query |
53| records with / without related rows | semi-join / anti-join |
54| text search across objects | SOSL |
55
56### 3. Optimize for selectivity and safety
57Check:
58- indexed / selective filters
59- no unnecessary fields
60- no avoidable wildcard or scan-heavy patterns
61- security enforcement expectations
62
63### 4. Validate execution path if needed
64If the user wants runtime verification, hand off execution to:
65- [platform-data-manage](../platform-data-manage/SKILL.md)
66
67---
68
69## High-Signal Rules
70
71- never use `SELECT *` style thinking; query only required fields
72- do not query inside loops in Apex contexts
73- prefer filtering in SOQL rather than post-filtering in Apex
74- use aggregates for counts and grouped summaries instead of loading unnecessary records
75- evaluate wildcard usage carefully; leading wildcards often defeat indexes
76- account for security mode / field access requirements when queries move into Apex
77
78---
79
80## Output Format
81
82When finishing, report in this order:
831. **Query purpose**
842. **Final SOQL/SOSL**
853. **Why this shape was chosen**
864. **Optimization or security notes**
875. **Execution suggestion if needed**
88
89Suggested shape — use `references/soql-syntax-reference.md` for exact syntax:
90
91```text
92Query goal: <summary>
93Query: <soql or sosl>
94Design: <relationship / aggregate / filter choices>
95Notes: <selectivity, limits, security, governor awareness>
96Next step: <run in platform-data-manage or embed in Apex>
97```
98
99---
100
101## Cross-Skill Integration
102
103| Need | Delegate to | Reason |
104|---|---|---|
105| run the query against an org | [platform-data-manage](../platform-data-manage/SKILL.md) | execution and export |
106| embed the query in services/selectors | [platform-apex-generate](../platform-apex-generate/SKILL.md) | implementation context |
107| analyze slow-query symptoms from logs | [platform-apex-logs-debug](../platform-apex-logs-debug/SKILL.md) | runtime evidence |
108| wire query-backed UI | [experience-lwc-generate](../experience-lwc-generate/SKILL.md) | frontend integration |
109
110---
111
112## Score Guide
113
114| Score | Meaning |
115|---|---|
116| 90+ | production-optimized query |
117| 80–89 | good query with minor improvements possible |
118| 70–79 | functional but performance concerns remain |
119| < 70 | needs revision before production use |
120
121---
122
123## Reference File Index
124
125| File | When to read |
126|------|-------------|
127| `references/soql-syntax-reference.md` | Syntax, operators, date literals, relationship query patterns |
128| `references/query-optimization.md` | Selectivity rules, indexing strategy, governor limits, security patterns |
129| `references/soql-reference.md` | Quick reference — operators, date functions, aggregate functions, WITH clauses |
130| `references/anti-patterns.md` | Common SOQL mistakes and their fixes — read before finalizing any query |
131| `references/selector-patterns.md` | Apex selector layer patterns — read when embedding queries in Apex classes |
132| `references/field-coverage-rules.md` | Field coverage validation — read when generating SOQL used inside Apex code |
133| `references/cli-commands.md` | sf CLI query execution, bulk export, query plan commands |
134| `assets/basic-queries.soql` | Starter query examples for common objects |
135| `assets/relationship-queries.soql` | Parent-to-child and child-to-parent relationship query patterns |
136| `assets/aggregate-queries.soql` | COUNT, SUM, GROUP BY, ROLLUP query patterns |
137| `assets/optimization-patterns.soql` | Selective filter and index-aware query patterns |
138| `assets/bulkified-query-pattern.cls` | Apex Map-based bulk query pattern for trigger contexts |
139| `assets/selector-class.cls` | Full selector class implementation template |
140| `scripts/post-tool-validate.py` | Post-write hook — runs static SOQL validation and live query plan analysis after `.soql` file edits |