[英]How to parse a String field to another type while importing from CSV in SQL Server 2012?
[英]How to parse String field in SQL Server 2008 if that String is in csv format
我有一个字符串字段,其中插入了csv行
'6 33','318011385','3183300153','Z','21.11.2011 13:33:22','51','51','2','0','032425','','','','','8 50318011100 318069332','','21.11.2011','21.11.2011','','0','','','GOT','0','0','0','0','0','0','0','0','0','0','0','21.11.2011','4','','','','','','','','','','','','',''
我需要使用t-sql从这个csv格式中提取几个字段。 我的主要方法是计算冒号(,)并基于冒号num来解析两个冒号之间的数据:
select min(SUBSTRING(field,charindex(''',''',recorddata,charindex(''',''',recorddata)+1)+3,CHARINDEX(''',''',field,charindex(''',''',field,charindex(''',''',field)+1)+3) - (charindex(''',''',field,charindex(''',''',field)+1)+3))) as fld from TBLSYNCEXPORT where SUBSTRING(field,2,CHARINDEX(''',''',field,0)-2) = @type and substring(field,CHARINDEX(''',''',field)+3,3) = @person and SUBSTRING(field,charindex(''',''',field,charindex(''',''',field)+1)+3,CHARINDEX(''',''',field,charindex(''',''',field,charindex(''',''',field)+1)+3) - (charindex(''',''',field,charindex(''',''',field)+1)+3)) > @prev_type
这个有更好的方法吗?
如果你更喜欢更清晰的方式,至少对我来说,你可以这样做:
CREATE TABLE #destination_table(
value varchar(10)
)
DECLARE @position INT
DECLARE @source_string VARCHAR( 1000 )
SELECT @source_string = "'6 33','318011385','3183300153','Z','21.11.2011 13:33:22','51','51','2','0','032425','','','','','8 50318011100 318069332','','21.11.2011','21.11.2011','','0','','','GOT','0','0','0','0','0','0','0','0','0','0','0','21.11.2011','4','','','','','','','','','','','','',''"
SELECT @position = CHARINDEX(',', @source_string )
WHILE @position <> 0
BEGIN
INSERT INTO #destination_table VALUES( LEFT( @source_string, @position-1 ) )
SELECT @source_string = STUFF( @source_string, 1, @position, NULL )
SELECT @position = CHARINDEX(',', @source_string )
END
INSERT INTO #destination_table VALUES( @source_string)
SELECT * FROM #destination_table
-- or select what you need
select value from #destination_table where id = 2
drop table #destination_table
它会在表格中插入不同的值,然后您可以选择所需的值。
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