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How can I go further on with SQL ?
SQL skills
3 Respuestas
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practice basic queries by create simple database
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My advice is to practice thoroughly with joins (either inner or outer), exists, not exists, group by's and aggregate functions. I can say they're widely used.
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Know to write procedures, joins, using triggers, Views..
U can find sample dump files or backups in internet.. Practise on them..
Know the different platforms and the differences in usage. e.g MySQL, Oracle