原文:
【SQL】找出行数与自增标识值不相等的表（即有缺行）
环境： mssql ent 2k8 r2
原理： 遍历所有含自增列的用户表，用sp_spaceused过程分别获取每张表的行数并写入临时表，然后使用IDENT_CURRENT函数获取表的最大标识值，比较二者并返回结果
IF
OBJECT_ID
(
'
tempdb..#TableRowCount
'
,
'
U
'
)
IS
NOT
NULL
DROP
TABLE
#TableRowCount
GO
CREATE
TABLE
#TableRowCount (Name sysname
PRIMARY
KEY
, RowCnt
DECIMAL
(
11
,
0
), Reserved
VARCHAR
(
18
), Data
VARCHAR
(
18
), Index_Size
VARCHAR
(
18
), Unused
VARCHAR
(
18
))
GO
DECLARE
curCntAllTableRows
CURSOR
LOCAL FAST_FORWARD
FOR
SELECT
name
FROM
sys.tables
WHERE
OBJECTPROPERTY
(
object_id
,
'
TableHasIdentity
'
)
=
1
OPEN
curCntAllTableRows
DECLARE
@TableName
sysname
FETCH
NEXT
FROM
curCntAllTableRows
INTO
@TableName
WHILE
@@FETCH_STATUS
=
0
BEGIN
INSERT
INTO
#TableRowCount
EXEC
sys.sp_spaceused
@TableName
FETCH
NEXT
FROM
curCntAllTableRows
INTO
@TableName
END
CLOSE
curCntAllTableRows
DEALLOCATE
curCntAllTableRows
/*
由于IDENT_CURRENT对于空表也会返回1，所以做特别处理
*/
WITH
cteA
AS
(
SELECT
Name,RowCnt,
CASE
IDENT_CURRENT(Name)
WHEN
1
THEN
RowCnt
ELSE
IDENT_CURRENT(Name)
END
AS
'
CurrID
'
FROM
#TableRowCount )
SELECT
Name,RowCnt,CurrID
FROM
cteA
WHERE
RowCnt
<>
CurrID
文毕。
