SQL Delete field increased field

   SQL field increased need to use sql statement

ALTER TABLE plus (table name) ADD plus (field names) plus (field type) 
example: 
ALTER TABLE T_Basic the ADD SEODescription Nvarchar (250) 
is T_Basic form to add a name to SEODescription type Nvarchar (250) of the field 


SQL delete fields need to sql statement 
ALTER tABLE plus (table name) DROP the COLUMN plus (field names)

实例：

ALTER TABLE T_Basic DROP COLUMN SEODescription

Delete a name for T_Basic form field for the SEODescription