How to I can update only one record on db?
如何才能更新db上的一条记录？
Table:
表：
name name1 name2
----------------------------
xx xy xz
xx xx xx
xx xx xx
xx xx xx
xy xx zz
Update query:
更新查询：
UPDATE table1
SET name2 = '01'
WHERE name1='xx'
but I need update only one row per time
但我每次只需更新一行
3 个解决方案
#1
35
you can use ROWCOUNT
你可以使用ROWCOUNT
SET ROWCOUNT 1
UPDATE table1
SET name2 = '01'
WHERE name1='xx'
SET ROWCOUNT 0
or you can use update top
或者您可以使用更新顶部
UPDATE TOP (1) table1
SET name2 = '01'
WHERE name1='xx'
#2
-4
if you want update one row per time, please try to add an Identity Column to your table to identify each row.
如果您希望每次更新一行，请尝试在表中添加标识列以标识每一行。
#3
-4
You can just add LIMIT 1 at the end of the query.
您只需在查询结尾处添加LIMIT 1即可。
#1
35
you can use ROWCOUNT
你可以使用ROWCOUNT
SET ROWCOUNT 1
UPDATE table1
SET name2 = '01'
WHERE name1='xx'
SET ROWCOUNT 0
or you can use update top
或者您可以使用更新顶部
UPDATE TOP (1) table1
SET name2 = '01'
WHERE name1='xx'
#2
-4
if you want update one row per time, please try to add an Identity Column to your table to identify each row.
如果您希望每次更新一行，请尝试在表中添加标识列以标识每一行。
#3
-4
You can just add LIMIT 1 at the end of the query.
您只需在查询结尾处添加LIMIT 1即可。