Shulou(Shulou.com)06/01 Report--

Syntax:

Alter table alter column new type name (length)

The field length has changed from varchar (max) to varchar (3000).

Alter table Engage_Job_JianLi alter column emp_gzjl varchar (3000)

Select * from emp_certificate

-- back up the table first

Select * into emp_certificate0620 from emp_certificate

-- modify the length of the field

Alter table emp_certificate alter column Cert_code varchar (30)

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