- name
- postgres-db
- description
- PostgreSQL 数据库操作技能。用于执行SQL查询、表管理、备份恢复、性能监控等数据库操作。触发条件:用户提到 PostgreSQL、postgres、数据库查询、SQL查询、表结构、数据库备份等。
PostgreSQL Database Skill
Overview
This skill provides comprehensive PostgreSQL database operations including query execution, schema management, backup/restore, and performance monitoring.
Capabilities
1. SQL Query Execution (scripts/query.py)
Execute SQL queries against PostgreSQL databases with support for:
- SELECT queries with result formatting
- INSERT/UPDATE/DELETE operations
- Transaction support
- Query result export (JSON, CSV)
2. Schema Export (scripts/schema_export.py)
Export database schema information:
- Table structures (columns, types, constraints)
- Indexes and foreign keys
- Views and triggers
- Export to JSON/Markdown format
3. Database Backup (scripts/backup.py)
Database backup and restore operations:
- Full database backup using pg_dump
- Table-specific backup
- Point-in-time recovery support
- Backup rotation management
4. Performance Monitoring
Monitor database performance:
- Query execution plans (EXPLAIN ANALYZE)
- Index usage statistics
- Table size and row counts
- Connection pool status
Usage
Query Database
python scripts/query.py --dbname mydb --query "SELECT * FROM users LIMIT 10"Export Schema
python scripts/schema_export.py --dbname mydb --output schema.jsonBackup Database
python scripts/backup.py --dbname mydb --backup-dir /backupsRequirements
- PostgreSQL client tools (psql, pg_dump)
- Python 3.7+
- psycopg2 or asyncpg library
Configuration
Set environment variables:
PGHOST- Database hostPGPORT- Database port (default: 5432)PGDATABASE- Database namePGUSER- Database userPGPASSWORD- Database password