SQL 更新所有行的列
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Update a column for all the rows
提问by rakesh bh
Table name: Employee
Column Name: Emp_name
表名:Employee
列名:Emp_name
Emp_name
has this contents:
Emp_name
有这个内容:
xx\rama,
xx\rajesh,
xx\vignesh
I have to update the table Employee by removing xx\
from all the rows of column Emp_name
.
我必须通过xx\
从 column 的所有行中删除来更新表 Employee Emp_name
。
Please help me.
请帮我。
回答by JNK
UPDATE Employee
SET EMP_Name = REPLACE(Emp_name, 'xx\', '')
This will remove all occurences of xx\
in all records.
这将删除xx\
所有记录中的所有出现。
回答by Bohemian
update Employee set
Emp_name = substring(Emp_name, 4)
where Emp_name like 'xx\%'; -- escaped backslash as per your database flavour
回答by Curt
UPDATE [Employee]
SET Emp_Name=REPLACE(Emp_Name, 'xx\', '')
If you just want to just update the first, then do:
如果您只想更新第一个,请执行以下操作:
UPDATE [Employee]
SET Emp_Name=REPLACE(Emp_Name, 'xx\', '')
WHERE Emp_Id=(SELECT MIN(Emp_Id) FROM [Employee])
回答by nikolifish
I"m assuming this is in MS SQL, so if it is, this should work
我假设这是在 MS SQL 中,所以如果是,这应该有效
update Employee
更新员工
set emp_name = right(emp_name, len(emp_name) - 3)
设置 emp_name = right(emp_name, len(emp_name) - 3)