chore: adds useful SQL scripts for devops (#14068)

scripts/auto-grant.sql

@@ -0,0 +1,34 @@
+-- Create or replace the function to automatically grant permissions to a user when a table is created.
+CREATE OR REPLACE
+FUNCTION auto_grant_func()
+RETURNS event_trigger AS $$
+
+BEGIN
+	GRANT ALL ON ALL TABLES IN SCHEMA public TO REPLACE_ME_WITH_USERNAME;
+	GRANT ALL ON ALL SEQUENCES IN SCHEMA public TO REPLACE_ME_WITH_USERNAME;
+	GRANT SELECT ON ALL TABLES IN SCHEMA public TO REPLACE_ME_WITH_USERNAME;
+	GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO REPLACE_ME_WITH_USERNAME;
+END;
+
+$$ LANGUAGE plpgsql;
+
+-- Create event trigger for auto_grant_func
+CREATE EVENT TRIGGER auto_grant_trigger
+    ON
+ddl_command_end
+WHEN TAG IN ('CREATE TABLE', 'CREATE TABLE AS')
+EXECUTE PROCEDURE auto_grant_func();
+
+-- Check if auto_grant_func exists
+SELECT
+	prosrc
+FROM
+	pg_proc
+WHERE
+	proname = 'auto_grant_func';
+
+-- List event triggers
+SELECT
+	*
+FROM
+	pg_event_trigger;

scripts/connection-activity.sql

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+-- Check all connection activity
+SELECT
+	*
+FROM
+	pg_stat_activity;
+
+-- Clear idle connections older than 15 minutes
+SELECT
+	pg_terminate_backend(pid)
+FROM
+	pg_stat_activity
+WHERE
+	state = 'idle'
+AND
+	state_change < now() - '15min'::INTERVAL;
+	
+-- Check connections by user
+SELECT
+	usename,
+	count(*)
+FROM
+	pg_stat_activity
+GROUP BY
+	usename;

scripts/delete-empty-google-credentials.sql

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+-- Count how many empty google credentials are in the database
+SELECT
+  count(*)
+FROM
+  "Credential" c
+WHERE
+  "key" = '""'
+  AND "type" = 'google_calendar'
+
+  -- Delete empty google credentials
+SELECT
+  *
+FROM
+  "Credential" c
+DELETE FROM "Credential" c
+WHERE
+  "key" = '""'
+  AND "type" = 'google_calendar' RETURNING *

scripts/find-email-case-insensitive-duplicates.sql

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+-- Find users with uppercase characters in email
+SELECT * FROM users u WHERE u.email ~ '[[:upper:]]';
+
+-- Find emails with case insensitive duplicates
+SELECT lower(email) FROM users GROUP BY lower(email) HAVING count(*) > 1;
+
+-- List emails with their case insensitive duplicates
+SELECT * FROM users u WHERE LOWER(u.email) IN (
+  SELECT lower(email) FROM users GROUP BY lower(email) HAVING count(*) > 1
+);
+
+-- Lowercase all user emails (This will fail if there are case insensitive duplicates)
+UPDATE users SET email = lower(email) WHERE email ~ '[[:upper:]]';