sf-soql

name	sf-soql
description	Advanced SOQL skill with natural language to query generation, query optimization, relationship traversal, aggregate functions, and performance analysis. Build efficient queries that respect governor limits and security requirements.
license	MIT
metadata	{"version":"1.1.0","author":"Jag Valaiyapathy","scoring":"100 points across 5 categories"}

sf-soql: Salesforce SOQL Query Expert

Expert database engineer specializing in Salesforce Object Query Language (SOQL). Generate optimized queries from natural language, analyze query performance, and ensure best practices for governor limits and security.

Core Responsibilities

1. Natural Language → SOQL: Convert plain English requests to optimized queries
2. Query Optimization: Analyze and improve query performance
3. Relationship Queries: Build parent-child and child-parent traversals
4. Aggregate Functions: COUNT, SUM, AVG, MIN, MAX with GROUP BY
5. Security Enforcement: Ensure FLS and sharing rules compliance
6. Governor Limit Awareness: Design queries within limits

Workflow (4-Phase Pattern)

Phase 1: Requirements Gathering

Use AskUserQuestion to gather:

• What data is needed (objects, fields)
• Filter criteria (WHERE conditions)
• Sort requirements (ORDER BY)
• Record limit requirements
• Use case (display, processing, reporting)

Phase 2: Query Generation

Natural Language Examples:

Request	Generated SOQL
"Get all active accounts with their contacts"	SELECT Id, Name, (SELECT Id, Name FROM Contacts) FROM Account WHERE IsActive__c = true
"Find contacts created this month"	SELECT Id, Name, Email FROM Contact WHERE CreatedDate = THIS_MONTH
"Count opportunities by stage"	SELECT StageName, COUNT(Id) FROM Opportunity GROUP BY StageName
"Get accounts with revenue over 1M sorted by name"	SELECT Id, Name, AnnualRevenue FROM Account WHERE AnnualRevenue > 1000000 ORDER BY Name

Phase 3: Optimization

Query Optimization Checklist:

1. Selectivity: Does WHERE clause use indexed fields?
2. Field Selection: Only query needed fields (not SELECT *)
3. Limit: Is LIMIT appropriate for use case?
4. Relationship Depth: Avoid deep traversals (max 5 levels)
5. Aggregate Queries: Use for counts instead of loading all records

Phase 4: Validation & Execution

# Test query
sf data query --query "SELECT Id, Name FROM Account LIMIT 10" --target-org my-org --json

# Analyze query plan
sf data query --query "..." --target-org my-org --use-tooling-api --plan

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Best Practices (100-Point Scoring)

Category	Points	Key Rules
Selectivity	25	Indexed fields in WHERE, selective filters
Performance	25	Appropriate LIMIT, minimal fields, no unnecessary joins
Security	20	WITH SECURITY_ENFORCED or stripInaccessible
Correctness	15	Proper syntax, valid field references
Readability	15	Formatted, meaningful aliases, comments

Scoring Thresholds: 90-100 = Production-optimized, 80-89 = Good (minor optimizations possible), 70-79 = Performance concerns, <70 = Needs improvement.

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Quick Reference

Security (Always Apply)

-- Enforce FLS (throws exception on inaccessible fields)
SELECT Id, Name, Phone FROM Account WITH SECURITY_ENFORCED

-- Respect sharing rules
SELECT Id, Name FROM Account WITH USER_MODE

See references/query-optimization.md for stripInaccessible in Apex, SYSTEM_MODE, governor limits, SOQL FOR loops, indexing strategy, and selectivity rules.

Governor Limits (Key Numbers)

Limit	Synchronous	Asynchronous
Total SOQL Queries	100	200
Records Retrieved	50,000	50,000

Anti-pattern: Never query inside a loop. Use Map<Id, SObject> with WHERE Id IN :idSet instead.

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SOQL Syntax, Relationships & Aggregates

See references/soql-syntax-reference.md for the complete reference including: basic query structure, WHERE operators, date literals, child-to-parent dot notation, parent-to-child subqueries, relationship names, aggregate functions (COUNT, SUM, AVG, GROUP BY, HAVING, ROLLUP), polymorphic queries (TYPEOF), semi-joins, and anti-joins.

Key patterns:

• Child-to-Parent: SELECT Contact.Account.Name FROM Case (up to 5 levels)
• Parent-to-Child: SELECT Id, (SELECT Id FROM Contacts) FROM Account
• Custom relationships: Use __r suffix (e.g., Custom_Object__r.Name)
• Aggregates: SELECT Industry, COUNT(Id) FROM Account GROUP BY Industry HAVING COUNT(Id) > 10

Query Optimization

See references/query-optimization.md for indexing strategy, selectivity rules, optimization patterns, query plan analysis, and efficient Apex patterns.

Key rules:

• Use indexed fields in WHERE (Id, Name, CreatedDate, Email, External IDs)
• Trailing wildcards use indexes (LIKE 'Acme%'), leading wildcards don't (LIKE '%corp')
• Filter in SOQL, not in Apex — use LIMIT appropriate to use case
• Use sf data query --plan to analyze query cost

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Natural Language Examples

Request	SOQL
"Get me all accounts"	SELECT Id, Name FROM Account LIMIT 1000
"Find contacts without email"	SELECT Id, Name FROM Contact WHERE Email = null
"Top 10 opportunities by amount"	SELECT Id, Name, Amount FROM Opportunity ORDER BY Amount DESC LIMIT 10
"Contacts with @gmail emails"	SELECT Id, Name, Email FROM Contact WHERE Email LIKE '[e-mail]'
"Opportunities closing this quarter"	SELECT Id, Name, CloseDate FROM Opportunity WHERE CloseDate = THIS_QUARTER
"Total revenue by industry"	SELECT Industry, SUM(AnnualRevenue) FROM Account GROUP BY Industry

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CLI Commands

# Basic query (JSON output)
sf data query --query "SELECT Id, Name FROM Account LIMIT 10" --target-org my-org --json

# CSV output to file
sf data query --query "SELECT Id, Name FROM Account" --target-org my-org --result-format csv --output-file accounts.csv

# Bulk export (> 2,000 records)
sf data export bulk --query "SELECT Id, Name FROM Account" --target-org my-org --output-file accounts.csv

# SOSL search
sf data search --query "FIND {Acme} IN ALL FIELDS RETURNING Account(Id, Name), Contact(Id, Name)" --target-org my-org

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Cross-Skill Integration

Skill	When to Use	Example
sf-apex	Embed queries in Apex	Skill(skill="sf-apex", args="Create service with SOQL query for accounts")
sf-data	Execute queries against org	Skill(skill="sf-data", args="Query active accounts from production")
sf-debug	Analyze query performance	Skill(skill="sf-debug", args="Analyze slow query in debug logs")
sf-lwc	Generate wire queries	Skill(skill="sf-lwc", args="Create component with wired account query")

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Document Map

References (Extracted)

Document	Description
SOQL Syntax Reference	Complete syntax, operators, dates, relationships, aggregates, advanced features
Query Optimization	Indexing, selectivity, patterns, query plan, governor limits, security

Docs

Document	Description
soql-reference.md	Complete SOQL syntax reference
cli-commands.md	SF CLI query commands
anti-patterns.md	Common mistakes and how to avoid them
selector-patterns.md	Query abstraction patterns (vanilla Apex)
field-coverage-rules.md	Ensure queries include all accessed fields

Templates

Template	Description
basic-queries.soql	Basic SOQL syntax examples
aggregate-queries.soql	COUNT, SUM, GROUP BY patterns
relationship-queries.soql	Parent-child traversals
optimization-patterns.soql	Selectivity and indexing
selector-class.cls	Selector class template
bulkified-query-pattern.cls	Map-based bulk lookups

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Dependencies

Required: Target org with sf CLI authenticated

Recommended: sf-debug (for query plan analysis), sf-apex (for embedding in Apex code)

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Credits

See CREDITS.md for acknowledgments of community resources that shaped this skill.