在sqlserver

时间：2018-03-16 07:55:31

标签： sql-server-2008 sql-server-2012

如何在SQL Server中更新时避免使用特殊字符和空格 我有一个关于SQL Server的问题：如何使用基于id和地址列的SQL Server中的源表标志更新目标表标志。

在比较id和地址时间（源表和目标表）时，我们只需考虑字符和数字数据。

在更新时间时，只考虑字符和数字，不需要考虑任何空格或特殊字符。

示例：源表：

id | address            | Flag
1  | 700 N. C Apt J1w02 | 1

目标表：

id  | address            | Flag
1   | 700 N. C Apt J1w02 |

我想使用源表ID +地址更新目标表的标志。

当我们不考虑空格和特殊字符和地址是700NCAptJ1w02时，源表地址和目标表地址相同所以标志将在目标表中更新标志是：1类似于其他

输出为：目标表：

id  | address            | Flag
1   | 700 N. C Apt J1w02 | 1

在目标表中，我们只需要更新Flag列。

另一个例子：

来源表：

id     |  address              | Flag
4      | 116 E Spence St #B    | 0

目标表：

id     | address                                      | Flag 
4      | 11 6 E Sp  enc     e             St #B NULL  |

当我们不考虑空格和特殊字符和地址是116ESpenceStB时，源表地址和目标表地址是相同的

表输出记录是：

id     | address                                          | Flag 
4      | 11  6 E Sp  enc     e             St #B    NULL  | 0

带脚本的示例表数据是：

 ---source table : 
    CREATE TABLE [dbo].[sourcemp]
    (
        [id] [int] NULL,
        [address] [varchar](200) NULL,
        [Flag] [int] NULL
    ) 

    ----Target table: we need update flag value using source table
    CREATE TABLE [dbo].[targetemp]
    (
        [id] [int] NULL,
        [address] [varchar](200) NULL,
        [Flag] [int] NULL
    ) 

    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'700 N. C Apt# J1w02', 1)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'7010 N COLTON', 0)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'0923 E 55th ten-332', 0)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'9717 E. 6TH AE #32', 0)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (2, N'5704 E Chattaroy Rd', 1)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (2, N'hen@ye   yte&t#100', 0)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (2, N'2903 E. Euclid, Apt. #40', 3)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (3, N'327 1/2 W. 2nd Ave RM SP3', 1)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (3, N'c/o DC!FS   1313 N. Atl*(antic   STE 2000', 2)
    GO
    INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (4, N'2706 W. College Ave.', 1)
    GO
I have a question about SQL Server: how to update target table flag using source table flag in SQL Server based on id and address columns.

When comparing id and address time (source and target tables), we need to consider only character and numbers data only.

While updating time, only consider characters and numbers only no need to consider any spaces or special characters.

Example: source table :

id | address            | Flag
1  | 700 N. C Apt J1w02 | 1
Target table :

id  | address            | Flag
1   | 700 N. C Apt J1w02 | 
I want to update target table's Flag using source table id + address.

Source table address and target table address are same when we are not considering spaces and special character and address is 700NCAptJ1w02 so Flag will be updated in target table Flag is :1 similar to others

Output is : target table :

id  | address            | Flag
1   | 700 N. C Apt J1w02 | 1 
in target table we need to updated only Flag column only.

Another example:

Source table :

id     |  address              | Flag
4      | 116 E Spence St #B    | 0
Target table :

id     | address                                      | Flag 
4      | 11 6 E Sp  enc     e             St #B NULL  |

Source table address and target table address are same when we are not considering spaces and special character and address is 116ESpenceStB

Table output record is :

id     | address                                          | Flag 
4      | 11  6 E Sp  enc     e             St #B    NULL  | 0
Sample table data with script is :

---source table : 
CREATE TABLE [dbo].[sourcemp]
(
    [id] [int] NULL,
    [address] [varchar](200) NULL,
    [Flag] [int] NULL
) 

----Target table: we need update flag value using source table
CREATE TABLE [dbo].[targetemp]
(
    [id] [int] NULL,
    [address] [varchar](200) NULL,
    [Flag] [int] NULL
) 

INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'700 N. C Apt# J1w02', 1)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'7010 N COLTON', 0)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'0923 E 55th ten-332', 0)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (1, N'9717 E. 6TH AE #32', 0)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (2, N'5704 E Chattaroy Rd', 1)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (2, N'hen@ye   yte&t#100', 0)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (2, N'2903 E. Euclid, Apt. #40', 3)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (3, N'327 1/2 W. 2nd Ave RM SP3', 1)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (3, N'c/o DC!FS   1313 N. Atl*(antic   STE 2000', 2)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (4, N'2706 W. College Ave.', 1)
GO
INSERT [dbo].[sourcemp] ([id], [address], [Flag]) VALUES (4, N'116 E Spence St #B', 0)

GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (1, N'700 N. C Apt   J1w02', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (1, N'7010 N COLTON.', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (1, N'0923 E 55th ten-332', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (1, N'971%7    E. 6TH AE #32', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (2, N'5704 E        Chattaroy Rd', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (2, N'henye   yte&t100', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (2, N'2903 E. !Euclid, Apt. #40', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (3, N'327 1/2 W. 2nd Ave RM SP3', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (3, N'c/o DC!FS   1313 N. Atl*anticSTE 2000', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (4, N'2706 WCollege Ave.', NULL)
GO
INSERT [dbo].[targetemp] ([id], [address], [Flag]) VALUES (4, N'11  6 E Sp  enc     e             St #B', NULL)
GO

基于以上数据我想要输出如下：

id  |address                                    Flag
1   |700 N. C Apt   J1w02                           | 1
1   |7010 N COLTON.                                 |0
1   |0923 E 55th ten-332                            |0
1   |971%7    E. 6TH AE #32                         |0
2   |5704 E        Chattaroy Rd                 |1
2   |henye   yte&t100                           |0
2   |2903 E. !Euclid, Apt. #40                  |3
3   |327 1/2 W. 2nd Ave RM SP3                  |1
3   |c/o DC!FS   1313 N. Atl*anticSTE 2000          |2
4   |2706 WCollege Ave.                         |1
4   |11  6 E Sp  enc     e             St #B    |0

我试过以下

update target   set target.flag=source.flag
from   targetemp target  join sourcemp source 
 on  target.id=source.id
and 
--and 
replace ( replace ( replace ( replace ( 
replace ( replace ( replace ( replace ( replace ( replace ( replace
 ( replace ( replace ( replace ( replace ( replace ( replace ( replace ( 
replace ( replace ( replace ( replace ( replace ( replace ( replace ( replace 
( replace( REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE
(source.address,' ',''),'~',''),'`',''),'!',''),'@',''),'!',''),'#',''),'$','')
,'%','') ,'^',''),'&',''),'*',''),'(',''),')',''),'-',''),'_',''),'=',''),'+','')
,
',',''),'.',''),'/',''),'\',''),'<',''),'>',''),'?',''),'"',''),'''',''),':',''),';','')
,'{',''),'}',''),'[',''),']',''),'\',''),'|','')=
replace ( replace ( replace ( replace ( 
replace ( replace ( replace ( replace ( replace ( replace ( replace
 ( replace ( replace ( replace ( replace ( replace ( replace ( replace ( 
replace ( replace ( replace ( replace ( replace ( replace ( replace ( replace 
( replace( REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE
(target.address,' ',''),'~',''),'`',''),'!',''),'@',''),'!',''),'#',''),'$','')
,'%','') ,'^',''),'&',''),'*',''),'(',''),')',''),'-',''),'_',''),'=',''),'+','')
,
',',''),'.',''),'/',''),'\',''),'<',''),'>',''),'?',''),'"',''),'''',''),':',''),';','')
,'{',''),'}',''),'[',''),']',''),'\',''),'|','')

以上查询耗时太长，因为11小时仍在运行。 请告诉我如何编写查询以在SQL Server中实现此任务。

1 个答案:

答案 0 :(得分：0)

这是最简单的方法之一。但性能取决于您的表格大小和address列的长度。另一个选择是使用计数表。 

with rcte as (
    select
        id, address, flag, ln = len(address), step = 1
        , res = cast(case when substring(address, 1, 1) like '[0-9a-z]' then substring(address, 1, 1) else '' end as varchar(200))
    from 
        sourcemp
    union all
    select
        id, address, flag, ln, step + 1
        , cast(res + case when substring(address, step + 1, 1) like '[0-9a-z]' then substring(address, step + 1, 1) else '' end as varchar(200))
    from
        rcte
    where
        step < ln 
)
, rcte2 as (
    select
        id, address, ln = len(address), step = 1
        , res = cast(case when substring(address, 1, 1) like '[0-9a-z]' then substring(address, 1, 1) else '' end as varchar(200))
    from 
        targetemp
    union all
    select
        id, address, ln, step + 1
        , cast(res + case when substring(address, step + 1, 1) like '[0-9a-z]' then substring(address, step + 1, 1) else '' end as varchar(200))
    from
        rcte2
    where
        step < ln 
)
, cte as (
    select
        a.id, a.address, b.Flag
    from
        rcte2 a
        join rcte b on a.id = b.id and a.res = b.res
    where
        a.ln = a.step
        and b.ln = b.step
)
update a
set
    a.Flag = b.Flag
from
    targetemp a
    join cte b on a.id = b.id and a.address = b.address

输出：

id  addresss                                  flag
-------------------------------------------------
1   700 N. C Apt   J1w02                      1
1   7010 N COLTON.                            0
1   0923 E 55th ten-332                       0
1   971%7    E. 6TH AE #32                    0
2   5704 E        Chattaroy Rd                1
2   henye   yte&t100                          0
2   2903 E. !Euclid, Apt. #40                 3
3   327 1/2 W. 2nd Ave RM SP3                 1
3   c/o DC!FS   1313 N. Atl*anticSTE 2000     2
4   2706 WCollege Ave.                        1
4   11  6 E Sp  enc     e             St #B   0
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