T-SQL split string - Printable Version +- 0Day Forums (https://zeroday.vip) +-- Forum: Coding (https://zeroday.vip/Forum-Coding) +--- Forum: Database (https://zeroday.vip/Forum-Database) +---- Forum: Microsoft SQL Server (https://zeroday.vip/Forum-Microsoft-SQL-Server) +---- Thread: T-SQL split string (/Thread-T-SQL-split-string) |
T-SQL split string - deviators128792 - 07-31-2023 I have a SQL Server 2008 R2 column containing a string which I need to split by a comma. I have seen many answers on StackOverflow but none of them works in R2. I have made sure I have select permissions on any split function examples. Any help greatly appreciated. RE: T-SQL split string - gazella809131 - 07-31-2023 I've used this SQL before which may work for you:- CREATE FUNCTION dbo.splitstring ( @stringToSplit VARCHAR(MAX) ) RETURNS @returnList TABLE ([Name] [nvarchar] (500)) AS BEGIN DECLARE @name NVARCHAR(255) DECLARE @pos INT WHILE CHARINDEX(',', @stringToSplit) > 0 BEGIN SELECT @pos = CHARINDEX(',', @stringToSplit) SELECT @name = SUBSTRING(@stringToSplit, 1, @pos-1) INSERT INTO @returnList SELECT @name SELECT @stringToSplit = SUBSTRING(@stringToSplit, @pos+1, LEN(@stringToSplit)-@pos) END INSERT INTO @returnList SELECT @stringToSplit RETURN END and to use it:- SELECT * FROM dbo.splitstring('91,12,65,78,56,789') RE: T-SQL split string - bedub370175 - 07-31-2023 if you replace WHILE CHARINDEX(',', @stringToSplit) > 0 with WHILE LEN(@stringToSplit) > 0 you can eliminate that last insert after the while loop! CREATE FUNCTION dbo.splitstring ( @stringToSplit VARCHAR(MAX) ) RETURNS @returnList TABLE ([Name] [nvarchar] (500)) AS BEGIN DECLARE @name NVARCHAR(255) DECLARE @pos INT WHILE LEN(@stringToSplit) > 0 BEGIN SELECT @pos = CHARINDEX(',', @stringToSplit) if @pos = 0 SELECT @pos = LEN(@stringToSplit) SELECT @name = SUBSTRING(@stringToSplit, 1, @pos-1) INSERT INTO @returnList SELECT @name SELECT @stringToSplit = SUBSTRING(@stringToSplit, @pos+1, LEN(@stringToSplit)-@pos) END RETURN END RE: T-SQL split string - berried950587 - 07-31-2023 I had to write something like this recently. Here's the solution I came up with. It's generalized for any delimiter string and I think it would perform slightly better: CREATE FUNCTION [dbo].[SplitString] ( @string nvarchar(4000) , @delim nvarchar(100) ) RETURNS @result TABLE ( [Value] nvarchar(4000) NOT NULL , [Index] int NOT NULL ) AS BEGIN DECLARE @str nvarchar(4000) , @pos int , @prv int = 1 SELECT @pos = CHARINDEX(@delim, @string) WHILE @pos > 0 BEGIN SELECT @str = SUBSTRING(@string, @prv, @pos - @prv) INSERT INTO @result SELECT @str, @prv SELECT @prv = @pos + LEN(@delim) , @pos = CHARINDEX(@delim, @string, @pos + 1) END INSERT INTO @result SELECT SUBSTRING(@string, @prv, 4000), @prv RETURN END RE: T-SQL split string - sixtus60823 - 07-31-2023 A solution using a CTE, if anyone should need that (apart from me, who obviously did, that is why I wrote it). declare @StringToSplit varchar(100) = 'Test1,Test2,Test3'; declare @SplitChar varchar(10) = ','; with StringToSplit as ( select ltrim( rtrim( substring( @StringToSplit, 1, charindex( @SplitChar, @StringToSplit ) - 1 ) ) ) Head , substring( @StringToSplit, charindex( @SplitChar, @StringToSplit ) + 1, len( @StringToSplit ) ) Tail union all select ltrim( rtrim( substring( Tail, 1, charindex( @SplitChar, Tail ) - 1 ) ) ) Head , substring( Tail, charindex( @SplitChar, Tail ) + 1, len( Tail ) ) Tail from StringToSplit where charindex( @SplitChar, Tail ) > 0 union all select ltrim( rtrim( Tail ) ) Head , '' Tail from StringToSplit where charindex( @SplitChar, Tail ) = 0 and len( Tail ) > 0 ) select Head from StringToSplit RE: T-SQL split string - Mrincrustation248 - 07-31-2023 This is more narrowly-tailored. When I do this I usually have a comma-delimited list of unique ids (INT or BIGINT), which I want to cast as a table to use as an inner join to another table that has a primary key of INT or BIGINT. I want an in-line table-valued function returned so that I have the most efficient join possible. Sample usage would be: DECLARE @IDs VARCHAR(1000); SET @IDs = ',99,206,124,8967,1,7,3,45234,2,889,987979,'; SELECT me.Value FROM dbo.MyEnum me INNER JOIN dbo.GetIntIdsTableFromDelimitedString(@IDs) ids ON me.PrimaryKey = ids.ID I stole the idea from [To see links please register here] , changing it to be in-line table-valued and cast as INT.create function dbo.GetIntIDTableFromDelimitedString ( @IDs VARCHAR(1000) --this parameter must start and end with a comma, eg ',123,456,' --all items in list must be perfectly formatted or function will error ) RETURNS TABLE AS RETURN SELECT CAST(SUBSTRING(@IDs,Nums.number + 1,CHARINDEX(',',@IDs,(Nums.number+2)) - Nums.number - 1) AS INT) AS ID FROM [master].[dbo].[spt_values] Nums WHERE Nums.Type = 'P' AND Nums.number BETWEEN 1 AND DATALENGTH(@IDs) AND SUBSTRING(@IDs,Nums.number,1) = ',' AND CHARINDEX(',',@IDs,(Nums.number+1)) > Nums.number; GO RE: T-SQL split string - aureaydqczgqw - 07-31-2023 here is a version that can split on a pattern using patindex, a simple adaptation of the post above. I had a case where I needed to split a string that contained multiple separator chars. <pre><code> alter FUNCTION dbo.splitstring ( @stringToSplit VARCHAR(1000), @splitPattern varchar(10) ) RETURNS @returnList TABLE ([Name] [nvarchar] (500)) AS BEGIN DECLARE @name NVARCHAR(255) DECLARE @pos INT WHILE PATINDEX(@splitPattern, @stringToSplit) > 0 BEGIN SELECT @pos = PATINDEX(@splitPattern, @stringToSplit) SELECT @name = SUBSTRING(@stringToSplit, 1, @pos-1) INSERT INTO @returnList SELECT @name SELECT @stringToSplit = SUBSTRING(@stringToSplit, @pos+1, LEN(@stringToSplit)-@pos) END INSERT INTO @returnList SELECT @stringToSplit RETURN END select * from dbo.splitstring('stringa/stringb/x,y,z','%[/,]%'); </code></pre> result looks like this stringa stringb x y z RE: T-SQL split string - immunochemistry725 - 07-31-2023 ALTER FUNCTION [dbo].func_split_string ( @input as varchar(max), @delimiter as varchar(10) = ";" ) RETURNS @result TABLE ( id smallint identity(1,1), csv_value varchar(max) not null ) AS BEGIN DECLARE @pos AS INT; DECLARE @string AS VARCHAR(MAX) = ''; WHILE LEN(@input) > 0 BEGIN SELECT @pos = CHARINDEX(@delimiter,@input); IF(@pos<=0) select @pos = len(@input) IF(@pos <> LEN(@input)) SELECT @string = SUBSTRING(@input, 1, @pos-1); ELSE SELECT @string = SUBSTRING(@input, 1, @pos); INSERT INTO @result SELECT @string SELECT @input = SUBSTRING(@input, @pos+len(@delimiter), LEN(@input)-@pos) END RETURN END RE: T-SQL split string - samaj549727 - 07-31-2023 I needed a quick way to get rid of the `+4` from a **zip code**. UPDATE #Emails SET ZIPCode = SUBSTRING(ZIPCode, 1, (CHARINDEX('-', ZIPCODE)-1)) WHERE ZIPCode LIKE '%-%' No proc... no UDF... just one tight little inline command that does what it must. Not fancy, not elegant. Change the delimiter as needed, etc, and it will work for anything. RE: T-SQL split string - adjunctively990108 - 07-31-2023 Personnaly I use this function : ALTER FUNCTION [dbo].[CUST_SplitString] ( @String NVARCHAR(4000), @Delimiter NCHAR(1) ) RETURNS TABLE AS RETURN ( WITH Split(stpos,endpos) AS( SELECT 0 AS stpos, CHARINDEX(@Delimiter,@String) AS endpos UNION ALL SELECT endpos+1, CHARINDEX(@Delimiter,@String,endpos+1) FROM Split WHERE endpos > 0 ) SELECT 'Id' = ROW_NUMBER() OVER (ORDER BY (SELECT 1)), 'Data' = SUBSTRING(@String,stpos,COALESCE(NULLIF(endpos,0),LEN(@String)+1)-stpos) FROM Split ) |