select user(): SQL DB Username
select version(): View Version
select database(): View DB name
select load_file(): Load a file on the Server

-- View all DBs
SELECT schema_name 
FROM information_schema.schemata; 
 
-- View tables in DB
SELECT table_name 
FROM information_schema.tables 
WHERE table_schema="<db-name>"; 
 
---View columns in Table
SELECT column_name 
FROM information_schema.columns 
WHERE table_name="<tab-name>";