分页存储过程（收藏）
前几天去面试，问我写没写过分页存储过程，这个东西其实很简单，以前也经常用，但是从没有自己写过实现，所以就说没有写过。就因为这个就直接fail了。
今天把这个存储过程放到这里作为警言
--
获取指定页的数据
Create
PROCEDURE
pagination
@tblName
varchar
(
255
),
--
表名
@strGetFields
varchar
(
1000
)
=
'
*
'
,
--
需要返回的列
@fldName
varchar
(
255
)
=
''
,
--
排序的字段名
@PageSize
int
=
10
,
--
页尺寸
@PageIndex
int
=
1
,
--
页码
@doCount
bit
=
0
,
--
返回记录总数, 非 0 值则返回
@OrderType
bit
=
0
,
--
设置排序类型, 非 0 值则降序
@strWhere
varchar
(
1500
)
=
''
--
查询条件 (注意: 不要加 where)
AS
declare
@strSQL
varchar
(
5000
)
--
主语句
declare
@strTmp
varchar
(
110
)
--
临时变量
declare
@strOrder
varchar
(
400
)
--
排序类型
if
@doCount
!=
0
begin
if
@strWhere
!=
''
set
@strSQL
=
"
select
count
(
*
)
as
Total
from
[
" + @tblName + "
]
where
"
+
@strWhere
else
set
@strSQL
=
"
select
count
(
*
)
as
Total
from
[
" + @tblName + "
]
"
end
--
以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都是@doCount为0的情况
else
begin
if
@OrderType
!=
0
begin
set
@strTmp
=
"
<
(
select
min
"
set
@strOrder
=
"
order
by
[
" + @fldName +"
]
desc
"
--
如果@OrderType不是0，就执行降序，这句很重要！
end
else
begin
set
@strTmp
=
"
>
(
select
max
"
set
@strOrder
=
"
order
by
[
" + @fldName +"
]
asc
"
end
if
@PageIndex
=
1
begin
if
@strWhere
!=
''
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
" + @tblName + "
]
where
"
+
@strWhere
+
" "
+
@strOrder
else
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
"+ @tblName + "
]
"
+
@strOrder
--
如果是第一页就执行以上代码，这样会加快执行速度
end
else
begin
--
以下代码赋予了@strSQL以真正执行的SQL代码
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
"
+ @tblName + "
]
where
[
" + @fldName + "
]
"
+
@strTmp
+
"(
[
"+ @fldName + "
]
)
from
(
select
top
"
+
str
((
@PageIndex
-
1
)
*
@PageSize
)
+
"
[
"+ @fldName + "
]
from
[
" + @tblName + "
]
"
+
@strOrder
+
")
as
tblTmp)"
+
@strOrder
if
@strWhere
!=
''
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
"
+ @tblName + "
]
where
[
" + @fldName + "
]
"
+
@strTmp
+
"(
[
"
+ @fldName + "
]
)
from
(
select
top
"
+
str
((
@PageIndex
-
1
)
*
@PageSize
)
+
"
[
"
+ @fldName + "
]
from
[
" + @tblName + "
]
where
"
+
@strWhere
+
" "
+
@strOrder
+
")
as
tblTmp)
and
"
+
@strWhere
+
" "
+
@strOrder
end
end
exec
(
@strSQL
)
GO
今天把这个存储过程放到这里作为警言
--
获取指定页的数据
Create
PROCEDURE
pagination
@tblName
varchar
(
255
),
--
表名
@strGetFields
varchar
(
1000
)
=
'
*
'
,
--
需要返回的列
@fldName
varchar
(
255
)
=
''
,
--
排序的字段名
@PageSize
int
=
10
,
--
页尺寸
@PageIndex
int
=
1
,
--
页码
@doCount
bit
=
0
,
--
返回记录总数, 非 0 值则返回
@OrderType
bit
=
0
,
--
设置排序类型, 非 0 值则降序
@strWhere
varchar
(
1500
)
=
''
--
查询条件 (注意: 不要加 where)
AS
declare
@strSQL
varchar
(
5000
)
--
主语句
declare
@strTmp
varchar
(
110
)
--
临时变量
declare
@strOrder
varchar
(
400
)
--
排序类型
if
@doCount
!=
0
begin
if
@strWhere
!=
''
set
@strSQL
=
"
select
count
(
*
)
as
Total
from
[
" + @tblName + "
]
where
"
+
@strWhere
else
set
@strSQL
=
"
select
count
(
*
)
as
Total
from
[
" + @tblName + "
]
"
end
--
以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都是@doCount为0的情况
else
begin
if
@OrderType
!=
0
begin
set
@strTmp
=
"
<
(
select
min
"
set
@strOrder
=
"
order
by
[
" + @fldName +"
]
desc
"
--
如果@OrderType不是0，就执行降序，这句很重要！
end
else
begin
set
@strTmp
=
"
>
(
select
max
"
set
@strOrder
=
"
order
by
[
" + @fldName +"
]
asc
"
end
if
@PageIndex
=
1
begin
if
@strWhere
!=
''
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
" + @tblName + "
]
where
"
+
@strWhere
+
" "
+
@strOrder
else
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
"+ @tblName + "
]
"
+
@strOrder
--
如果是第一页就执行以上代码，这样会加快执行速度
end
else
begin
--
以下代码赋予了@strSQL以真正执行的SQL代码
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
" + @tblName + "
]
where
[
" + @fldName + "
]
"
+
@strTmp
+
"(
[
"+ @fldName + "
]
)
from
(
select
top
"
+
str
((
@PageIndex
-
1
)
*
@PageSize
)
+
"
[
"+ @fldName + "
]
from
[
" + @tblName + "
]
"
+
@strOrder
+
")
as
tblTmp)"
+
@strOrder
if
@strWhere
!=
''
set
@strSQL
=
"
select
top
"
+
str
(
@PageSize
)
+
" "
+
@strGetFields
+
"
from
[
" + @tblName + "
]
where
[
" + @fldName + "
]
"
+
@strTmp
+
"(
[
" + @fldName + "
]
)
from
(
select
top
"
+
str
((
@PageIndex
-
1
)
*
@PageSize
)
+
"
[
" + @fldName + "
]
from
[
" + @tblName + "
]
where
"
+
@strWhere
+
" "
+
@strOrder
+
")
as
tblTmp)
and
"
+
@strWhere
+
" "
+
@strOrder
end
end
exec
(
@strSQL
)
GO