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SQL: ALTER TABLE Statement The ALTER TABLE statement allows you to rename an existing table. It can also be used to add, modify, or drop a column f... 阅读全文
posted @ 2012-08-09 09:32
BiG5
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摘要:
修改表的例子: Examples Add a column to a table ALTER TABLE STAFF_OPTIONS ADD SO_INSURANCE_PROVIDER Varchar2(35);Add a default value to a column ... 阅读全文
posted @ 2012-08-09 09:30
BiG5
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