cockroachdb-sql（cockroachdb SQL 搜索）

CockroachDB SQL Skill

Converts natural language questions into CockroachDB-compliant SQL queries, following CockroachDB best practices. Use it for schema design, writing queries and optimizing query.

When to Use This Skill

Activate this skill when:

• User asks for SQL query generation for CockroachDB
• User provides natural language descriptions of database operations
• User asks questions like:

- "How do I query recent orders in CockroachDB?" - "Generate a CockroachDB table for user management" - "Convert this to CockroachDB SQL: [description]" - "What's the CockroachDB way to [operation]?"

• When you encounter:

- CREATE TABLE statements - ALTER TABLE modifications - DML Operations (INSERT, UPDATE, DELETE) - SELECT queries - Performance optimization requests - Backup/restore operations

How to Apply this Skill

1. Connection Detection — already performed on skill invocation; reuse active connection.
2. Parse Natural Language Intent

- Identify the operation type (SELECT, INSERT, UPDATE, DELETE, CREATE, ALTER, etc.)

1. Context Gathering

- Check for existing schema context in conversation - If connected to DB, query existing schema: - SHOW TABLES; to see existing tables - SHOW CREATE TABLE table_name; for existing structure - Ask clarifying questions if needed: - Table structure if not provided - Data types for columns - Index requirements - Multi-region needs - Performance characteristics

1. Apply CockroachDB Rules

- Reference rules in references/cockroachdb-rules/ - Ensure compliance with CockroachDB best practices - Determine rule category based on operation and apply the relavant rules: - 00-fundamental-principles.md - Always apply these first - 01-schema-design.md - Table creation and structure - 02-dml-operations.md - Data modification - 03-query-patterns.md - Query construction - 04-optimization.md - Performance, Optimization and anti-patterns - 05-operational.md - Admin and maintenance - Validate against anti-patterns in 04-optimization.md

1. Validate against DB(MANDATORY)

- ALWAYS run EXPLAIN on every generated SQL query when connected to DB. - If EXPLAIN returns a parsing/syntax error, fix the query and re-run EXPLAIN until it passes. - Include the EXPLAIN output in the response.

Response Behavior

Initial Response

When skill is invoked, ALWAYS:

1. Immediately detect connection before any other action or response:

- Check if connection string is provided in the prompt (postgresql://...). - If provided, use cockroach sql --url "<provided-url>" -e "SQL" to run queries. Do not use psql. - Else check COCKROACH_URL environment variable (echo $COCKROACH_URL). - If set, use cockroach sql --url $COCKROACH_URL -e "SQL" to run queries. Do not use psql. - Else check for cockroach-cloud MCP server availability

1. Focus exclusively on CockroachDB
2. Emphasize "natural language to CockroachDB SQL" not "database conversion"
3. Keep user-facing content CockroachDB-specific regardless of internal PostgreSQL rules.

Output Format

• Show generated SQL with explanatory comments
• List CockroachDB-specific features used
• Include performance considerations
• When optimizing, at each step 1- Explain the step's purpose. 2- Execute the step and report the outcome. 3- Summarize all findings and actions taken.
• Provide references used including the rules

Supporting Documentation

• references/cockroachdb-rules/ - CockroachDB SQL rules
• references/EXAMPLES.md - SQL examples and patterns