我有一个数据库字段,其中包含存储为多行字符串的地址信息。
88 Park View
Hemmingdale
London
谁能告诉我在选择语句中将第 1 行、第 2 行和第 3 行作为不同字段的最佳方法?
问候理查德
我有一个数据库字段,其中包含存储为多行字符串的地址信息。
88 Park View
Hemmingdale
London
谁能告诉我在选择语句中将第 1 行、第 2 行和第 3 行作为不同字段的最佳方法?
问候理查德
试试这样的东西?请注意,这有点脆弱
DECLARE @S VARCHAR(500), @Query VARCHAR(1000)
SELECT @S='88 Park View
Hemmingdale
London'
SELECT @Query=''''+ REPLACE(@S, CHAR(13),''',''')+''''
EXEC('SELECT '+@Query)
结果
88 Park View | Hemmingdale | London
这是我提出的一个解决方案,我使用 CTE 递归迭代值表,并用 new line 将它们拆分出来CHAR(13)
,然后使用 aPIVOT
来显示结果。您只需将这些添加到PIVOT
.
DECLARE @Table AS TABLE(ID int, SomeText VARCHAR(MAX))
INSERT INTO @Table VALUES(1, '88 Park View
Hemmingdale
London')
INSERT INTO @Table VALUES(2, '100 Main Street
Hemmingdale
London')
INSERT INTO @Table VALUES(3, '123 6th Street
Appt. B
Hemmingdale
London')
;WITH SplitValues (ID, OriginalValue, SplitValue, Level)
AS
(
SELECT ID, SomeText, CAST('' AS VARCHAR(MAX)), 0 FROM @Table
UNION ALL
SELECT ID
, SUBSTRING(OriginalValue, CASE WHEN CHARINDEX(CHAR(13), OriginalValue) = 0 THEN LEN(OriginalValue) + 1 ELSE CHARINDEX(CHAR(13), OriginalValue) + 2 END, LEN(OriginalValue))
, SUBSTRING(OriginalValue, 0, CASE WHEN CHARINDEX(CHAR(13), OriginalValue) = 0 THEN LEN(OriginalValue) + 1 ELSE CHARINDEX(CHAR(13), OriginalValue) END)
, Level + 1
FROM SplitValues
WHERE LEN(SplitValues.OriginalValue) > 0
)
SELECT ID, [1] AS Level1, [2] AS Level2, [3] AS Level3, [4] AS Level4, [5] AS Level5
FROM (
SELECT ID, Level, SplitValue
FROM SplitValues
WHERE Level > 0
) AS p
PIVOT (MAX(SplitValue) FOR Level IN ([1], [2], [3], [4], [5])) AS pvt
结果:
ID Level1 Level2 Level3 Level4 Level5
----------- -------------------- -------------------- -------------------- -------------------- --------------------
1 88 Park View Hemmingdale London NULL NULL
2 100 Main Street Hemmingdale London NULL NULL
3 123 6th Street Appt. B Hemmingdale London NULL
我知道这很可怕,但是这样你就有了 3 列中的 3 行,称为 l1、l2 和 l3:
declare @input nvarchar(max) = 'line 1' + CHAR(13) + CHAR(10) + 'line 2' + CHAR(13) + CHAR(10) + 'line 3' + CHAR(13) + CHAR(10) + 'line 4' + CHAR(13) + CHAR(10) + 'line 5'
declare @delimiter nvarchar(10) = CHAR(13) + CHAR(10)
declare @outtable table (id int primary key identity(1,1), data nvarchar(1000) )
declare @pos int = 1
declare @temp nvarchar(1000)
if substring( @input, 1, len(@delimiter) ) = @delimiter
begin
set @input = substring(@input, 1+len(@delimiter), len(@input))
end
while @pos > 0
begin
set @pos = patindex('%' + @delimiter + '%', @input)
if @pos > 0
set @temp = substring(@input, 1, @pos-1)
else
set @temp = @input
insert into @outtable ( data ) values ( @temp )
set @input = substring(@input, @pos+len(@delimiter), len(@input))
end
select
top 1 ISNULL(a.data,'') as l1, ISNULL(b.data,'') as l2, ISNULL(c.data,'') as l3
from
@outtable a
left outer join @outtable b on b.id = 2
left outer join @outtable c on c.id = 3
sqlfiddle在这里
只是为了好玩,用 XML 解决方案更新。这应该处理'。问题并且可以很容易地扩展到更多行。
DECLARE @xml XML , @S VARCHAR(500) = '88 Park View
Hemmingdale
London'
SET @xml = CAST('<row><col>' + REPLACE(@S,CHAR(13),'</col><col>') + '</col></row>' AS XML)
SELECT
line.col.value('col[1]', 'varchar(1000)') AS line1
,line.col.value('col[2]', 'varchar(1000)') AS line2
,line.col.value('col[3]', 'varchar(1000)') AS line3
FROM @xml.nodes('/row') AS line(col)