Updating database with sql statement


25-Dec-2019 12:00

The CREATE INDEX statement is used to create indexes in tables.Indexes are used to retrieve data from the database very fast.For INSERT and UPDATE, the values are the newly inserted/updated values.

This dictionary provides a list of argument names accepted by various schema-level constructs on behalf of a dialect.Unless otherwise stated, the interpreter will support everything covered in this course.If you're already familar with the basics of SQL, you can still use this as a refresher, and practice some SQL statements.You will receive immediate results after submitting your SQL commands.

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You will be able to create your own unique tables as well as perform selects, inserts, updates, deletes, and drops on your tables.

Let us start with a simple table: UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1200 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1200 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1250 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1250 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; We are no longer setting all the salary fields to the same value, so we can’t collapse it into a single statement.