Sqlsever base where is null to determine whether the contents of a column are null

Town Field Poem:
——— Dream who feel, the water month Build blog. Baiqian tribulation, only know the vicissitudes of the world.
——— today holds the Buddhist language, the technology is boundless willing to learn. Willing to do what you learn, cast a conscience blog.
——————————————————————————————————————————

1 Code

1 --Create a database2 Create DatabaseHelloWorld13 4 --use helloworld1 this database5  UseHelloWorld16 7 --Create a table teacher8 Create TableTeacher9 (TenIdint Primary Key Identity(1,1),    OneNamenvarchar(Ten), AClassnchar(2) - ) -  the --look at teacher, what's this form? - Select *  fromTeacher -  - --insert these lines into this table + Insert  intoTeacher -        Values('nu wa Niang','Taoism'), +('meta-start Tianzun','Taoism'), A('Buddha Buddha','Buddhist'), at('Jesus','Christ'), -('Green-degree mother','Buddhist'), -('nine days should be meta-tianzun of Thunder','Taoism'), -('The salt-free Empress','Taoism'), -('Heavenly Queen','Taoism') -  in --set the value of the class column in the Teacher table, where name is the green parent, to NULL - UpdateTeacherSetClass=NULL whereName='Green-degree mother' to  + --displays all the contents of a row that is null in the class one column of the teacher table - Select *  fromTeacher the whereClass is NULL

2 Show

——————————————————————————————————————————
The essence of the blog, in the technical part, more in the town yard a poem.
Sqlsever is a good language, worth studying hard. Familiar with the database of additions and deletions, write procedures necessary.
If the content of the post can be improved, or even the wrong place, please leave a comment, I will try to correct, strive to cast a conscience blog.
Note: This article is only as a scientific research study, if I inadvertently violated your rights and interests, please be sure to timely inform, I will make corrections.

Sqlsever base where is null to determine whether the contents of a column are null