如何在SQL Server中将字符串和值插入表中

Question

我有一个像这样的字符串:

72594206916,2,1/2/08,Tacoma,WA:72594221856,5,5/7/13,San Francisco,CA:72594221871,99,12/30/12,Dallas,TX

这基本上是3行中的5个值(来自ASP.NET网格).我需要将此字符串拆分为SQL Server表中的5列和3行.各个值用逗号分隔,冒号用行分隔.

我发现了一个将字符串拆分成片段的函数,我可以从这个字符串中获取行:

declare @testString varchar(100)
set @testString = '72594206916,2,1/2/08,Tacoma,WA:72594221856,5,5/7/13,San Francisco,CA:72594221871,99,12/30/12,Dallas,TX'

select *
from dbo.SplitString(@testString, ':')

给我:

72594206916,2,1/2/08,Tacoma,WA
72594221856,5,5/7/13,San Francisco,CA
72594221871,99,12/30/12,Dallas,TX

这给了我一个带有三行的结果集(函数输出一个表).我可以同时再次调用此函数并以某种方式将其输出插入表中吗？

Answer 1

假设您的拆分返回列名称项

insert <table> (colname)
select y.item
from dbo.SplitString(@testString, ':') x
cross apply
dbo.SplitString(x.item, ',') y

Answer 2

创建此 SQL 函数：

CREATE FUNCTION [dbo].[StringSplit](@input NVARCHAR(MAX), @delimiter CHAR(1)=',') 
       RETURNS @returnTable TABLE(item NVARCHAR(100)) AS  
     BEGIN 
        IF @input IS NULL RETURN;
        DECLARE @currentStartIndex INT, @currentEndIndex INT,@length INT;
        SET @length=LEN(@input);
        SET @currentStartIndex=1;

        SET @currentEndIndex=CHARINDEX(@delimiter,@input,@currentStartIndex);
        WHILE (@currentEndIndex<>0)
          BEGIN
            INSERT INTO @returnTable VALUES (LTRIM(SUBSTRING(@input, @currentStartIndex, @currentEndIndex-@currentStartIndex)))
            SET @currentStartIndex=@currentEndIndex+1;
            SET @currentEndIndex=CHARINDEX(@delimiter,@input,@currentStartIndex);
          END

        IF (@currentStartIndex <= @length)
          INSERT INTO @returnTable 
            VALUES (LTRIM(SUBSTRING(@input, @currentStartIndex, @length-@currentStartIndex+1)));
        RETURN;
     END;

使用示例：

DECLARE @testString VARCHAR(100)
SET @testString = '72594206916,2,1/2/08,Tacoma,WA:72594221856,5,5/7/13,San Francisco,CA:72594221871,99,12/30/12,Dallas,TX'

SELECT *
FROM [dbo].[StringSplit](@testString, DEFAULT)

结果（表）：

72594206916
2
1/2/08
Tacoma
WA:72594221856
5
5/7/13
San Francisco
CA:72594221871
99
12/30/12
Dallas