dx-data-navigator（dx 数据导航器）

DX Data Navigator

Install

npx skills add pskoett/pskoett-ai-skills/dx-data-navigator

Query the DX Data Cloud PostgreSQL database using the mcp__dx-mcp-server__queryData tool.

Tool Usage

mcp__dx-mcp-server__queryData(sql: "SELECT ...")

Always query information_schema.columns first if uncertain about table/column names:

SELECT column_name, data_type FROM information_schema.columns
WHERE table_name = 'table_name' ORDER BY ordinal_position;

Critical: Team Tables

Three team table types exist - use the right one:

For DX survey scores: Join through dx_snapshot_teams. Use GROUP BY to avoid duplicates (team names can appear multiple times across snapshot history):

SELECT st.name as team, i.name as metric, MAX(ts.score) as score, MAX(ts.vs_industry50) as vs_industry
FROM dx_snapshot_team_scores ts
JOIN dx_snapshot_teams st ON ts.snapshot_team_id = st.id
JOIN dx_snapshot_items i ON ts.item_id = i.id AND i.snapshot_id = ts.snapshot_id
WHERE ts.snapshot_id = (SELECT id FROM dx_snapshots ORDER BY end_date DESC LIMIT 1)
  AND st.name = 'Your Team Name'
  AND i.item_type = 'core4'
GROUP BY st.name, i.name;

For PR/deployment metrics by team: Join through dx_users to dx_teams:

SELECT t.name, COUNT(*) as prs
FROM pull_requests p
JOIN dx_users u ON p.dx_user_id = u.id
JOIN dx_teams t ON u.team_id = t.id
WHERE p.merged IS NOT NULL GROUP BY t.name;

Discovering Team Names

Query the database to find available teams:

SELECT name FROM dx_teams WHERE deleted_at IS NULL ORDER BY name;

Data Domains

Core DX Metrics

Survey snapshots with team scores, benchmarks, and sentiment data.

Key tables: dx_snapshots, dx_snapshot_teams, dx_snapshot_items, dx_snapshot_team_scores

dx_snapshots columns: id, account_id, contributors, participation_rate, start_date (date), end_date (date)

dx_snapshot_teams columns: id, snapshot_id, team_id, name, parent (boolean), flattened_parent, contributors, participation_rate

dx_snapshot_items columns: id, snapshot_id, name, item_type, prompt, target_label

dx_snapshot_team_scores columns: id, snapshot_id, snapshot_team_id (FK to dx_snapshot_teams.id), team_id (FK to dx_teams.id), item_id (FK to dx_snapshot_items.id), score, vs_org, vs_prev, vs_industry50, vs_industry75, vs_industry90, unit

Item types in dx_snapshot_items:

• core4: Effectiveness, Impact, Quality, Speed
• kpi: Ease of delivery, Engagement, Weekly time loss, Quality, Speed
• sentiment: Deep work, Change Confidence, Documentation, Cross-team collaboration, Customer focus, Decision-making, etc.
• workflow: Review wait time, CI wait time, Deploy frequency, PR merge frequency, AI time savings, Red tape, etc.
• workflow_averages: Raw average values for workflow metrics (actual numbers, not percentiles)
• csat: Tool satisfaction scores (e.g., code editors, issue trackers, CI/CD tools)

-- Latest snapshot info
SELECT id, start_date, end_date, contributors, participation_rate
FROM dx_snapshots ORDER BY end_date DESC LIMIT 1;

-- Team scores for specific metric (use GROUP BY to dedupe)
SELECT st.name as team, i.name as metric, MAX(ts.score) as score, MAX(ts.vs_industry50) as vs_industry
FROM dx_snapshot_team_scores ts
JOIN dx_snapshot_teams st ON ts.snapshot_team_id = st.id
JOIN dx_snapshot_items i ON ts.item_id = i.id AND i.snapshot_id = ts.snapshot_id
WHERE ts.snapshot_id = (SELECT id FROM dx_snapshots ORDER BY end_date DESC LIMIT 1)
  AND st.name = 'Your Team Name'
  AND i.item_type = 'core4'
GROUP BY st.name, i.name;

-- All teams comparison on one metric
SELECT st.name as team, MAX(ts.score) as score, MAX(ts.vs_industry50) as vs_industry
FROM dx_snapshot_team_scores ts
JOIN dx_snapshot_teams st ON ts.snapshot_team_id = st.id
JOIN dx_snapshot_items i ON ts.item_id = i.id AND i.snapshot_id = ts.snapshot_id
WHERE ts.snapshot_id = (SELECT id FROM dx_snapshots ORDER BY end_date DESC LIMIT 1)
  AND i.name = 'Effectiveness' AND i.item_type = 'core4'
  AND st.parent = false
GROUP BY st.name
ORDER BY score DESC NULLS LAST;

Teams and Users

Organization structure, team hierarchies, user profiles.

Key tables: dx_teams, dx_users, dx_team_hierarchies, dx_groups

dx_teams columns: id, name, contributors, deleted_at

dx_users key columns: id, name, email, team_id, ai_light_adoption_date, ai_moderate_adoption_date, ai_heavy_adoption_date

-- Teams with contributor counts
SELECT name, contributors FROM dx_teams WHERE deleted_at IS NULL ORDER BY contributors DESC;

-- Users with AI adoption status
SELECT name, email, ai_heavy_adoption_date FROM dx_users
WHERE ai_heavy_adoption_date IS NOT NULL ORDER BY ai_heavy_adoption_date DESC;

-- Team members
SELECT u.name, u.email FROM dx_users u
JOIN dx_teams t ON u.team_id = t.id
WHERE t.name = 'Your Team Name';

Pull Requests

PR metrics including cycle times, review wait times, and throughput.

Key tables: pull_requests, pull_request_reviews, repos

pull_requests key columns: id, dx_user_id, repo_id, title, base_ref, head_ref, additions, deletions, created, merged, closed, draft, bot_authored

Key metrics (all in seconds, divide by 3600 for hours):

• open_to_merge: Total PR cycle time
• open_to_first_review: Time to first review
• open_to_first_approval: Time to approval
• Business hour variants: add _business_hours suffix

-- PR metrics by team last 30 days
SELECT t.name, COUNT(*) as prs,
       AVG(p.open_to_merge)/3600 as avg_hours_to_merge,
       AVG(p.open_to_first_review)/3600 as avg_hours_to_first_review
FROM pull_requests p
JOIN dx_users u ON p.dx_user_id = u.id
JOIN dx_teams t ON u.team_id = t.id
WHERE p.merged IS NOT NULL AND p.created > NOW() - INTERVAL '30 days'
GROUP BY t.name ORDER BY prs DESC;

-- PR size distribution
SELECT
    CASE
        WHEN additions + deletions < 50 THEN 'XS (<50)'
        WHEN additions + deletions < 200 THEN 'S (50-199)'
        WHEN additions + deletions < 500 THEN 'M (200-499)'
        ELSE 'L (500+)'
    END as size_bucket,
    COUNT(*) as count,
    AVG(open_to_merge)/3600 as avg_hours
FROM pull_requests
WHERE merged IS NOT NULL AND created > NOW() - INTERVAL '90 days'
GROUP BY size_bucket ORDER BY avg_hours;

Deployments and Incidents

Deployment frequency, success rates, and incident tracking for DORA metrics.

Key tables: deployments, incidents, incident_services

deployments columns: id, service, repository, environment, deployed_at, success, commit_sha

incidents columns: id, name, priority, source, source_url, started_at, resolved_at, started_to_resolved (seconds), deleted

Deployment environments: dev, stage, prod, production Incident priorities: '1 - Critical', '2 - High', '3 - Moderate', '4 - Low', '5 - Planning' Incident source: Check SELECT DISTINCT source FROM incidents for available sources

-- Deploy frequency by environment
SELECT environment, COUNT(*) FROM deployments
WHERE deployed_at > NOW() - INTERVAL '30 days' GROUP BY environment;

-- Deployment success rate
SELECT
    COUNT(*) as total,
    COUNT(*) FILTER (WHERE success) as successful,
    COUNT(*) FILTER (WHERE success)::float / COUNT(*) * 100 as success_rate
FROM deployments WHERE deployed_at > NOW() - INTERVAL '30 days';

-- Mean Time to Recovery (MTTR)
SELECT AVG(started_to_resolved)/3600 as avg_hours_to_resolve
FROM incidents
WHERE resolved_at IS NOT NULL AND priority IN ('1 - Critical', '2 - High');

-- Incidents by priority
SELECT priority, COUNT(*) FROM incidents
WHERE started_at > NOW() - INTERVAL '90 days' AND deleted = false
GROUP BY priority ORDER BY priority;

AI Tools

AI coding assistant adoption tracking (e.g., GitHub Copilot).

Key tables: ai_tools, ai_tool_daily_metrics, github_copilot_daily_usages, github_users

github_copilot_daily_usages columns: id, login, date, enterprise_slug, active (boolean)

github_users columns: id, login, verified_emails, bot, active

Linking Copilot to teams: GitHub logins don't match DX user emails directly. Use github_users.verified_emails to link:

-- Copilot usage by team (via github_users email linking)
SELECT t.name as team, COUNT(DISTINCT c.login) as active_copilot_users
FROM github_copilot_daily_usages c
JOIN github_users gu ON c.login = gu.login
JOIN dx_users u ON gu.verified_emails = u.email
JOIN dx_teams t ON u.team_id = t.id
WHERE c.date > NOW() - INTERVAL '30 days' AND c.active = true
GROUP BY t.name ORDER BY active_copilot_users DESC;

-- Daily Copilot active users (overall)
SELECT date, COUNT(*) FILTER (WHERE active) as active_users
FROM github_copilot_daily_usages
WHERE date > NOW() - INTERVAL '30 days'
GROUP BY date ORDER BY date;

-- Copilot adoption rate (latest day)
SELECT
    COUNT(DISTINCT login) FILTER (WHERE active) as active_users,
    COUNT(DISTINCT login) as total_users,
    COUNT(DISTINCT login) FILTER (WHERE active)::float / COUNT(DISTINCT login) * 100 as adoption_pct
FROM github_copilot_daily_usages
WHERE date = (SELECT MAX(date) FROM github_copilot_daily_usages);

-- Weekly trend
SELECT DATE_TRUNC('week', date) as week,
       COUNT(DISTINCT login) FILTER (WHERE active) as active_users
FROM github_copilot_daily_usages
WHERE date > NOW() - INTERVAL '90 days'
GROUP BY week ORDER BY week;

Issue Tracking

Project management data including issues, sprints, and cycle times (e.g., Jira).

Key tables: jira_issues, jira_projects, jira_sprints, jira_issue_sprints, jira_issue_types, jira_statuses

jira_issues key columns: id, key, summary, story_points, cycle_time (seconds), created_at, completed_at, project_id, status_id, issue_type_id, user_id

jira_sprints columns: id, name, state ('active', 'closed', 'future'), start_date, end_date, complete_date

-- Sprint velocity (last 5 closed sprints)
SELECT s.name, SUM(i.story_points) as points, COUNT(*) as issues
FROM jira_sprints s
JOIN jira_issue_sprints jis ON s.id = jis.sprint_id
JOIN jira_issues i ON jis.issue_id = i.id
WHERE s.state = 'closed' AND i.completed_at IS NOT NULL
GROUP BY s.id, s.name ORDER BY s.complete_date DESC LIMIT 5;

-- Issue cycle time by type
SELECT it.name as issue_type, COUNT(*) as issues, AVG(i.cycle_time)/3600 as avg_hours
FROM jira_issues i
JOIN jira_issue_types it ON i.issue_type_id = it.id
WHERE i.completed_at IS NOT NULL AND i.completed_at > NOW() - INTERVAL '90 days'
GROUP BY it.name ORDER BY issues DESC;

Service Catalog

Software catalog with services, teams, domains, and ownership.

Key tables: dx_catalog_entities, dx_catalog_entity_owners, dx_catalog_entity_types

dx_catalog_entities columns: id, name, identifier, entity_type_identifier, description

Entity types: service, team, domain (check entity_type_identifier column)

-- Services count by owning team
SELECT t.name as team, COUNT(*) as services
FROM dx_catalog_entity_owners eo
JOIN dx_catalog_entities e ON eo.entity_id = e.id
JOIN dx_teams t ON eo.team_id = t.id
WHERE e.entity_type_identifier = 'service'
GROUP BY t.name ORDER BY services DESC;

-- List services with owners
SELECT e.name as service, e.identifier, t.name as owner_team
FROM dx_catalog_entities e
JOIN dx_catalog_entity_owners eo ON e.id = eo.entity_id
JOIN dx_teams t ON eo.team_id = t.id
WHERE e.entity_type_identifier = 'service'
ORDER BY t.name, e.name;

Pipelines and Code Quality

CI/CD pipeline runs and code quality metrics (e.g., SonarCloud).

Key tables: pipeline_runs, sonarcloud_issues, sonarcloud_projects, sonarcloud_project_metrics

pipeline_runs columns: id, status, started_at, completed_at, duration

-- Pipeline success rate
SELECT COUNT(*) as runs,
       COUNT(*) FILTER (WHERE status = 'success') as successful,
       COUNT(*) FILTER (WHERE status = 'success') * 100.0 / COUNT(*) as success_pct
FROM pipeline_runs WHERE started_at > NOW() - INTERVAL '30 days';

-- Pipeline duration trend
SELECT DATE_TRUNC('week', started_at) as week,
       AVG(duration)/60 as avg_minutes
FROM pipeline_runs WHERE started_at > NOW() - INTERVAL '90 days'
GROUP BY week ORDER BY week;

Issues

Normalized issue data from source control platforms (e.g., GitHub Issues).

Key tables: issues, github_issues, github_issue_labels, github_labels

issues columns: id, source, dx_user_id, title, state, created, completed, cycle_time

-- Issue throughput
SELECT DATE_TRUNC('week', completed) as week, COUNT(*) as completed
FROM issues WHERE completed > NOW() - INTERVAL '90 days'
GROUP BY week ORDER BY week;

Documentation

Documentation and knowledge base activity (e.g., Confluence, wikis).

Key tables: confluence_spaces, confluence_pages, confluence_page_versions, confluence_users, confluence_page_labels

confluence_spaces columns: id, name, external_key, space_type, status, source_url, created_at

confluence_pages columns: id, space_id, author_id, title, status, views_count, created_at, updated_at

confluence_page_versions columns: id, page_id, version_number, author_id, created_at

-- Most active Confluence spaces
SELECT s.name as space_name, s.external_key,
       COUNT(DISTINCT p.id) as page_count,
       COUNT(DISTINCT pv.id) as total_edits,
       MAX(pv.created_at) as last_activity
FROM confluence_spaces s
LEFT JOIN confluence_pages p ON s.id = p.space_id
LEFT JOIN confluence_page_versions pv ON p.id = pv.page_id
GROUP BY s.id, s.name, s.external_key
ORDER BY total_edits DESC LIMIT 15;

-- Recent documentation activity
SELECT p.title, s.name as space, pv.created_at
FROM confluence_page_versions pv
JOIN confluence_pages p ON pv.page_id = p.id
JOIN confluence_spaces s ON p.space_id = s.id
WHERE pv.created_at > NOW() - INTERVAL '7 days'
ORDER BY pv.created_at DESC LIMIT 20;

Data Quality Notes

Known issues:

• Some team names may have typos - verify names by querying dx_teams
• incident_services table is empty - incidents cannot be linked to specific services
• dx_users AI adoption date fields are mostly NULL - use github_copilot_daily_usages instead
• DX survey scores may have duplicates - always use GROUP BY with MAX() aggregation

Common Query Patterns

DORA Metrics

-- Deployment Frequency (daily average, production only)
SELECT COUNT(*)::float / 30 as deploys_per_day FROM deployments
WHERE deployed_at > NOW() - INTERVAL '30 days' AND environment IN ('prod', 'production');

-- Lead Time for Changes (PR cycle time)
SELECT
    AVG(open_to_merge)/3600 as avg_hours,
    PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY open_to_merge)/3600 as median_hours
FROM pull_requests
WHERE merged IS NOT NULL AND created > NOW() - INTERVAL '30 days';

-- Mean Time to Recovery
SELECT AVG(started_to_resolved)/3600 as mttr_hours FROM incidents
WHERE resolved_at IS NOT NULL AND priority IN ('1 - Critical', '2 - High')
  AND started_at > NOW() - INTERVAL '90 days';

-- Change Failure Rate (requires correlating incidents with deployments)

Time-based Trends

-- Weekly PR throughput trend
SELECT DATE_TRUNC('week', merged) as week, COUNT(*) as prs
FROM pull_requests WHERE merged > NOW() - INTERVAL '90 days'
GROUP BY week ORDER BY week;

-- Monthly deployment trend
SELECT DATE_TRUNC('month', deployed_at) as month, COUNT(*) as deploys
FROM deployments WHERE deployed_at > NOW() - INTERVAL '12 months'
GROUP BY month ORDER BY month;

Historical DX Survey Comparison

-- Compare team scores across all surveys
SELECT s.end_date as survey_date, i.name as metric, ts.score
FROM dx_snapshot_team_scores ts
JOIN dx_snapshots s ON ts.snapshot_id = s.id
JOIN dx_snapshot_teams st ON ts.snapshot_team_id = st.id AND st.snapshot_id = s.id
JOIN dx_snapshot_items i ON ts.item_id = i.id AND i.snapshot_id = s.id
WHERE st.name = 'Your Team Name'
  AND i.item_type = 'core4'
  AND ts.score IS NOT NULL
ORDER BY s.end_date, i.name;

-- Teams that improved most since last survey (use vs_prev)
SELECT st.name as team, i.name as metric, MAX(ts.score) as score, MAX(ts.vs_prev) as change
FROM dx_snapshot_team_scores ts
JOIN dx_snapshot_teams st ON ts.snapshot_team_id = st.id
JOIN dx_snapshot_items i ON ts.item_id = i.id AND i.snapshot_id = ts.snapshot_id
WHERE ts.snapshot_id = (SELECT id FROM dx_snapshots ORDER BY end_date DESC LIMIT 1)
  AND i.name = 'Effectiveness' AND i.item_type = 'core4'
  AND st.parent = false
GROUP BY st.name, i.name
ORDER BY change DESC NULLS LAST;

Tool Satisfaction Analysis

-- Tool satisfaction scores (csat)
SELECT i.name as tool, AVG(ts.score) as avg_satisfaction, COUNT(DISTINCT st.name) as teams_using
FROM dx_snapshot_team_scores ts
JOIN dx_snapshot_teams st ON ts.snapshot_team_id = st.id
JOIN dx_snapshot_items i ON ts.item_id = i.id AND i.snapshot_id = ts.snapshot_id
WHERE ts.snapshot_id = (SELECT id FROM dx_snapshots ORDER BY end_date DESC LIMIT 1)
  AND i.item_type = 'csat' AND st.parent = false AND ts.score IS NOT NULL
GROUP BY i.name ORDER BY avg_satisfaction ASC;

Reference Files

For detailed schema documentation, read these files: