43 lines
2.1 KiB
Markdown
43 lines
2.1 KiB
Markdown
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---
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name: query-shz-highgo
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description: Query the SHZ HighGo Security Enterprise Edition database through its SSH gateway using a guarded read-only psql workflow. Use when Claude Code is working in the shz-backend project and needs to inspect database schemas, tables, columns, row counts, or application data; diagnose data-related behavior; or execute SELECT, WITH, SHOW, or EXPLAIN statements against the project's HighGo database.
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---
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# Query SHZ HighGo
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Use the bundled script to run read-only SQL through the configured SSH gateway.
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## Query workflow
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1. Form the narrowest useful query. Add a small `LIMIT` when inspecting rows.
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2. For unfamiliar tables, inspect `information_schema.columns` before selecting business data.
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3. Run:
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```bash
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.claude/skills/query-shz-highgo/scripts/query.sh 'SELECT current_database(), current_user, current_schema()'
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```
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4. Summarize the result and distinguish returned facts from inferences.
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The script accepts only statements beginning with `SELECT`, `WITH`, `SHOW`, or `EXPLAIN`, rejects multiple statements, sets `search_path` to `shz,public`, enforces database-level read-only mode, and applies a 30-second timeout. Never bypass these controls or perform writes unless the user explicitly requests a separate write-capable workflow.
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## Schema discovery
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List user tables:
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```bash
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.claude/skills/query-shz-highgo/scripts/query.sh "SELECT table_schema, table_name FROM information_schema.tables WHERE table_schema NOT IN ('pg_catalog', 'information_schema') ORDER BY 1, 2"
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```
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Inspect columns:
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```bash
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.claude/skills/query-shz-highgo/scripts/query.sh "SELECT column_name, data_type, is_nullable FROM information_schema.columns WHERE table_schema = 'shz' AND table_name = 'lowercase_table_name' ORDER BY ordinal_position"
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```
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HighGo may expose unquoted identifiers in lowercase and quoted identifiers with exact case. Query `information_schema` first when the spelling is uncertain.
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## Connection details
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Read [references/connection.md](references/connection.md) only when troubleshooting connectivity or updating the endpoint. Do not print, quote, or expose the password file.
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