How to Reindex SQL Tables. The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can ...

See CASE expression for a description of CASE expressions. To add, drop, or modify a column's definition or attributes, use the ALTER TABLE statement, described in ALTER TABLE Statement . In the SET ...

You create a CLOB in Oracle through the database's Structured Query Language, or SQL. Using SQL's "ALTER TABLE" statement, you add a CLOB data item to an existing table in your business' database.