Advanced SQL Query Techniques: Data Retrieval and Manipulation
SELECT Statement Fundamentals
The SELECT statement is fundamental for retrieving data from databases. When used alone, it can access system parameters and configuration settings.
-- View system parameters
SELECT @@port;
SELECT @@basedir;
SELECT @@datadir;
SELECT @@socket;
SELECT @@server_id;
SELECT @@innodb_flush_log_at_trx_commit;
SHOW VARIABL ...
Posted on Thu, 13 Aug 2026 16:50:58 +0000 by REDFOXES06