SQL database field to add descriptive text

1. Check the contents of the field with captions of all the specified table

SELECT *,OBJECT_NAME(major_id) AS obj_name FROM sys.extended_properties
WHERE OBJECT_NAME(major_id)='SC_Company'

2. Add a field for a caption

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'公司名称' ,
 @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',
 @level1name=N'SC_Company', @level2type=N'COLUMN',@level2name=N'CompanyName'

3. To edit the text of a particular field

 EXEC sys.sp_updateextendedproperty  @name=N'MS_Description', @value=N'公司名称' ,
 @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',
 @level1name=N'SC_Company', @level2type=N'COLUMN',@level2name=N'CompanyName'

4. Remove the caption of a field

 EXEC sys.sp_dropextendedproperty  @name=N'MS_Description',
 @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',
 @level1name=N'SC_Company', @level2type=N'COLUMN',@level2name=N'CompanyID'