Files
worklenz/worklenz-backend/database/sql/3_views.sql
chamikaJ 978d9158c0 feat(database): add performance indexes and materialized view for optimization
- Created multiple new indexes in the performance-indexes.sql file to enhance query performance for tasks, team members, and related tables.
- Added a materialized view for team member information in 3_views.sql to pre-calculate expensive joins, improving data retrieval efficiency.
- Introduced a function to refresh the materialized view, ensuring up-to-date information while optimizing performance.
- Implemented an optimized method in tasks-controller-v2.ts to split complex queries into focused segments, significantly improving response times and overall performance.
2025-07-07 15:01:11 +05:30

69 lines
2.4 KiB
PL/PgSQL

CREATE OR REPLACE VIEW task_labels_view(name, task_id, label_id) AS
SELECT (SELECT team_labels.name
FROM team_labels
WHERE team_labels.id = task_labels.label_id) AS name,
task_labels.task_id,
task_labels.label_id
FROM task_labels;
CREATE OR REPLACE VIEW tasks_with_status_view(task_id, parent_task_id, is_todo, is_doing, is_done) AS
SELECT tasks.id AS task_id,
tasks.parent_task_id,
stsc.is_todo,
stsc.is_doing,
stsc.is_done
FROM tasks
JOIN task_statuses ts ON tasks.status_id = ts.id
JOIN sys_task_status_categories stsc ON ts.category_id = stsc.id
WHERE tasks.archived IS FALSE;
CREATE OR REPLACE VIEW team_member_info_view(avatar_url, email, name, user_id, team_member_id, team_id, active) AS
SELECT u.avatar_url,
COALESCE(u.email, (SELECT email_invitations.email
FROM email_invitations
WHERE email_invitations.team_member_id = team_members.id)) AS email,
COALESCE(u.name, (SELECT email_invitations.name
FROM email_invitations
WHERE email_invitations.team_member_id = team_members.id)) AS name,
u.id AS user_id,
team_members.id AS team_member_id,
team_members.team_id,
team_members.active
FROM team_members
LEFT JOIN users u ON team_members.user_id = u.id;
-- PERFORMANCE OPTIMIZATION: Create materialized view for team member info
-- This pre-calculates the expensive joins and subqueries from team_member_info_view
CREATE MATERIALIZED VIEW IF NOT EXISTS team_member_info_mv AS
SELECT
u.avatar_url,
COALESCE(u.email, ei.email) AS email,
COALESCE(u.name, ei.name) AS name,
u.id AS user_id,
tm.id AS team_member_id,
tm.team_id,
tm.active,
u.socket_id
FROM team_members tm
LEFT JOIN users u ON tm.user_id = u.id
LEFT JOIN email_invitations ei ON ei.team_member_id = tm.id
WHERE tm.active = TRUE;
-- Create unique index on the materialized view for fast lookups
CREATE UNIQUE INDEX IF NOT EXISTS idx_team_member_info_mv_team_member_id
ON team_member_info_mv(team_member_id);
CREATE INDEX IF NOT EXISTS idx_team_member_info_mv_team_user
ON team_member_info_mv(team_id, user_id);
-- Function to refresh the materialized view
CREATE OR REPLACE FUNCTION refresh_team_member_info_mv()
RETURNS void
LANGUAGE plpgsql
AS $$
BEGIN
REFRESH MATERIALIZED VIEW CONCURRENTLY team_member_info_mv;
END;
$$;