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From data-analyst-roadmap
SQL database querying, optimization, and data management for analytics
How this skill is triggered — by the user, by Claude, or both
Slash command
/data-analyst-roadmap:skills/databases-sqlThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Master SQL and database concepts essential for data analysts, from basic queries to advanced optimization and data warehousing.
Master SQL and database concepts essential for data analysts, from basic queries to advanced optimization and data warehousing.
| Error Type | Cause | Recovery |
|---|---|---|
| Syntax error | Invalid SQL | Validate query syntax before execution |
| Timeout | Long-running query | Add indexes, optimize query |
| Connection failed | Network/auth issue | Retry with exponential backoff |
| Permission denied | Access rights | Request appropriate permissions |
| Deadlock | Concurrent transactions | Retry transaction |
npx claudepluginhub pluginagentmarketplace/custom-plugin-data-analyst --plugin data-analyst-roadmapOptimizes SQL queries, designs schemas, and troubleshoots performance issues using window functions, CTEs, indexing, and EXPLAIN plan analysis. Supports PostgreSQL, MySQL, SQL Server, and Oracle.
Optimizes SQL queries, designs database schemas, and troubleshoots performance issues. Covers window functions, CTEs, indexing strategies, EXPLAIN ANALYZE interpretation, and query migration across PostgreSQL, MySQL, and SQL Server.
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