Related
I have a code which is:
DECLARE #Script VARCHAR(MAX)
SELECT #Script = definition FROM manged.sys.all_sql_modules sq
where sq.object_id = (SELECT object_id from managed.sys.objects
Where type = 'P' and Name = 'usp_gen_data')
Declare #Pos int
SELECT #pos=CHARINDEX(CHAR(13)+CHAR(10),#script,7500)
PRINT SUBSTRING(#Script,1,#Pos)
PRINT SUBSTRING(#script,#pos,8000)
The length of the Script is around 10,000 Characters and Since I am using print Statement which can hold only max of 8000. So I am using two print statements.
The problem is when I have a script which is of say 18000 characters then I used to use 3 print statements.
So Is there a way that I could set the number of print statements depending on the length of the script?
I know it's an old question, but what I did is not mentioned here.
For me the following worked (for up to 16k chars)
DECLARE #info NVARCHAR(MAX)
--SET #info to something big
PRINT CAST(#info AS NTEXT)
If you have more than 16k chars you can combine with #Yovav's answer like this (64k should be enough for anyone ;)
print cast( substring(#info, 1, 16000) as ntext )
print cast( substring(#info, 16001, 32000) as ntext )
print cast( substring(#info, 32001, 48000) as ntext )
print cast( substring(#info, 48001, 64000) as ntext )
The following workaround does not use the PRINT statement. It works well in combination with the SQL Server Management Studio.
SELECT CAST('<root><![CDATA[' + #MyLongString + ']]></root>' AS XML)
You can click on the returned XML to expand it in the built-in XML viewer.
There is a pretty generous client side limit on the displayed size. Go to Tools/Options/Query Results/SQL Server/Results to Grid/XML data to adjust it if needed.
Here is how this should be done:
DECLARE #String NVARCHAR(MAX);
DECLARE #CurrentEnd BIGINT; /* track the length of the next substring */
DECLARE #offset tinyint; /*tracks the amount of offset needed */
set #string = replace( replace(#string, char(13) + char(10), char(10)) , char(13), char(10))
WHILE LEN(#String) > 1
BEGIN
IF CHARINDEX(CHAR(10), #String) between 1 AND 4000
BEGIN
SET #CurrentEnd = CHARINDEX(char(10), #String) -1
set #offset = 2
END
ELSE
BEGIN
SET #CurrentEnd = 4000
set #offset = 1
END
PRINT SUBSTRING(#String, 1, #CurrentEnd)
set #string = SUBSTRING(#String, #CurrentEnd+#offset, LEN(#String))
END /*End While loop*/
Taken from http://ask.sqlservercentral.com/questions/3102/any-way-around-the-print-limit-of-nvarcharmax-in-s.html
You could do a WHILE loop based on the count on your script length divided by 8000.
EG:
DECLARE #Counter INT
SET #Counter = 0
DECLARE #TotalPrints INT
SET #TotalPrints = (LEN(#script) / 8000) + 1
WHILE #Counter < #TotalPrints
BEGIN
-- Do your printing...
SET #Counter = #Counter + 1
END
Came across this question and wanted something more simple... Try the following:
SELECT [processing-instruction(x)]=#Script FOR XML PATH(''),TYPE
I just created a SP out of Ben's great answer:
/*
---------------------------------------------------------------------------------
PURPOSE : Print a string without the limitation of 4000 or 8000 characters.
https://stackoverflow.com/questions/7850477/how-to-print-varcharmax-using-print-statement
USAGE :
DECLARE #Result NVARCHAR(MAX)
SET #Result = 'TEST'
EXEC [dbo].[Print_Unlimited] #Result
---------------------------------------------------------------------------------
*/
ALTER PROCEDURE [dbo].[Print_Unlimited]
#String NVARCHAR(MAX)
AS
BEGIN
BEGIN TRY
---------------------------------------------------------------------------------
DECLARE #CurrentEnd BIGINT; /* track the length of the next substring */
DECLARE #Offset TINYINT; /* tracks the amount of offset needed */
SET #String = replace(replace(#String, CHAR(13) + CHAR(10), CHAR(10)), CHAR(13), CHAR(10))
WHILE LEN(#String) > 1
BEGIN
IF CHARINDEX(CHAR(10), #String) BETWEEN 1 AND 4000
BEGIN
SET #CurrentEnd = CHARINDEX(CHAR(10), #String) -1
SET #Offset = 2
END
ELSE
BEGIN
SET #CurrentEnd = 4000
SET #Offset = 1
END
PRINT SUBSTRING(#String, 1, #CurrentEnd)
SET #String = SUBSTRING(#String, #CurrentEnd + #Offset, LEN(#String))
END /*End While loop*/
---------------------------------------------------------------------------------
END TRY
BEGIN CATCH
DECLARE #ErrorMessage VARCHAR(4000)
SELECT #ErrorMessage = ERROR_MESSAGE()
RAISERROR(#ErrorMessage,16,1)
END CATCH
END
This proc correctly prints out VARCHAR(MAX) parameter considering wrapping:
CREATE PROCEDURE [dbo].[Print]
#sql varchar(max)
AS
BEGIN
declare
#n int,
#i int = 0,
#s int = 0, -- substring start posotion
#l int; -- substring length
set #n = ceiling(len(#sql) / 8000.0);
while #i < #n
begin
set #l = 8000 - charindex(char(13), reverse(substring(#sql, #s, 8000)));
print substring(#sql, #s, #l);
set #i = #i + 1;
set #s = #s + #l + 2; -- accumulation + CR/LF
end
return 0
END
I was looking to use the print statement to debug some dynamic sql as I imagin most of you are using print for simliar reasons.
I tried a few of the solutions listed and found that Kelsey's solution works with minor tweeks (#sql is my #script) n.b. LENGTH isn't a valid function:
--http://stackoverflow.com/questions/7850477/how-to-print-varcharmax-using-print-statement
--Kelsey
DECLARE #Counter INT
SET #Counter = 0
DECLARE #TotalPrints INT
SET #TotalPrints = (LEN(#sql) / 4000) + 1
WHILE #Counter < #TotalPrints
BEGIN
PRINT SUBSTRING(#sql, #Counter * 4000, 4000)
SET #Counter = #Counter + 1
END
PRINT LEN(#sql)
This code does as commented add a new line into the output, but for debugging this isn't a problem for me.
Ben B's solution is perfect and is the most elegent, although for debugging is a lot of lines of code so I choose to use my slight modification of Kelsey's. It might be worth creating a system like stored procedure in msdb for Ben B's code which could be reused and called in one line?
Alfoks' code doesn't work unfortunately because that would have been easier.
You can use this
declare #i int = 1
while Exists(Select(Substring(#Script,#i,4000))) and (#i < LEN(#Script))
begin
print Substring(#Script,#i,4000)
set #i = #i+4000
end
Or simply:
PRINT SUBSTRING(#SQL_InsertQuery, 1, 8000)
PRINT SUBSTRING(#SQL_InsertQuery, 8001, 16000)
There is great function called PrintMax written by Bennett Dill.
Here is slightly modified version that uses temp stored procedure to avoid "schema polution"(idea from https://github.com/Toolien/sp_GenMerge/blob/master/sp_GenMerge.sql)
EXEC (N'IF EXISTS (SELECT * FROM tempdb.sys.objects
WHERE object_id = OBJECT_ID(N''tempdb..#PrintMax'')
AND type in (N''P'', N''PC''))
DROP PROCEDURE #PrintMax;');
EXEC (N'CREATE PROCEDURE #PrintMax(#iInput NVARCHAR(MAX))
AS
BEGIN
IF #iInput IS NULL
RETURN;
DECLARE #ReversedData NVARCHAR(MAX)
, #LineBreakIndex INT
, #SearchLength INT;
SET #SearchLength = 4000;
WHILE LEN(#iInput) > #SearchLength
BEGIN
SET #ReversedData = LEFT(#iInput COLLATE DATABASE_DEFAULT, #SearchLength);
SET #ReversedData = REVERSE(#ReversedData COLLATE DATABASE_DEFAULT);
SET #LineBreakIndex = CHARINDEX(CHAR(10) + CHAR(13),
#ReversedData COLLATE DATABASE_DEFAULT);
PRINT LEFT(#iInput, #SearchLength - #LineBreakIndex + 1);
SET #iInput = RIGHT(#iInput, LEN(#iInput) - #SearchLength
+ #LineBreakIndex - 1);
END;
IF LEN(#iInput) > 0
PRINT #iInput;
END;');
DBFiddle Demo
EDIT:
Using CREATE OR ALTER we could avoid two EXEC calls:
EXEC (N'CREATE OR ALTER PROCEDURE #PrintMax(#iInput NVARCHAR(MAX))
AS
BEGIN
IF #iInput IS NULL
RETURN;
DECLARE #ReversedData NVARCHAR(MAX)
, #LineBreakIndex INT
, #SearchLength INT;
SET #SearchLength = 4000;
WHILE LEN(#iInput) > #SearchLength
BEGIN
SET #ReversedData = LEFT(#iInput COLLATE DATABASE_DEFAULT, #SearchLength);
SET #ReversedData = REVERSE(#ReversedData COLLATE DATABASE_DEFAULT);
SET #LineBreakIndex = CHARINDEX(CHAR(10) + CHAR(13), #ReversedData COLLATE DATABASE_DEFAULT);
PRINT LEFT(#iInput, #SearchLength - #LineBreakIndex + 1);
SET #iInput = RIGHT(#iInput, LEN(#iInput) - #SearchLength + #LineBreakIndex - 1);
END;
IF LEN(#iInput) > 0
PRINT #iInput;
END;');
db<>fiddle Demo
create procedure dbo.PrintMax #text nvarchar(max)
as
begin
declare #i int, #newline nchar(2), #print varchar(max);
set #newline = nchar(13) + nchar(10);
select #i = charindex(#newline, #text);
while (#i > 0)
begin
select #print = substring(#text,0,#i);
while (len(#print) > 8000)
begin
print substring(#print,0,8000);
select #print = substring(#print,8000,len(#print));
end
print #print;
select #text = substring(#text,#i+2,len(#text));
select #i = charindex(#newline, #text);
end
print #text;
end
Uses Line Feeds and spaces as a good break point:
declare #sqlAll as nvarchar(max)
set #sqlAll = '-- Insert all your sql here'
print '#sqlAll - truncated over 4000'
print #sqlAll
print ' '
print ' '
print ' '
print '#sqlAll - split into chunks'
declare #i int = 1, #nextspace int = 0, #newline nchar(2)
set #newline = nchar(13) + nchar(10)
while Exists(Select(Substring(#sqlAll,#i,3000))) and (#i < LEN(#sqlAll))
begin
while Substring(#sqlAll,#i+3000+#nextspace,1) <> ' ' and Substring(#sqlAll,#i+3000+#nextspace,1) <> #newline
BEGIN
set #nextspace = #nextspace + 1
end
print Substring(#sqlAll,#i,3000+#nextspace)
set #i = #i+3000+#nextspace
set #nextspace = 0
end
print ' '
print ' '
print ' '
My PrintMax version for prevent bad line breaks on output:
CREATE PROCEDURE [dbo].[PrintMax](#iInput NVARCHAR(MAX))
AS
BEGIN
Declare #i int;
Declare #NEWLINE char(1) = CHAR(13) + CHAR(10);
While LEN(#iInput)>0 BEGIN
Set #i = CHARINDEX(#NEWLINE, #iInput)
if #i>8000 OR #i=0 Set #i=8000
Print SUBSTRING(#iInput, 0, #i)
Set #iInput = SUBSTRING(#iInput, #i+1, LEN(#iInput))
END
END
Here's another version. This one extracts each substring to print from the main string instead of taking reducing the main string by 4000 on each loop (which might create a lot of very long strings under the hood - not sure).
CREATE PROCEDURE [Internal].[LongPrint]
#msg nvarchar(max)
AS
BEGIN
-- SET NOCOUNT ON reduces network overhead
SET NOCOUNT ON;
DECLARE #MsgLen int;
DECLARE #CurrLineStartIdx int = 1;
DECLARE #CurrLineEndIdx int;
DECLARE #CurrLineLen int;
DECLARE #SkipCount int;
-- Normalise line end characters.
SET #msg = REPLACE(#msg, char(13) + char(10), char(10));
SET #msg = REPLACE(#msg, char(13), char(10));
-- Store length of the normalised string.
SET #MsgLen = LEN(#msg);
-- Special case: Empty string.
IF #MsgLen = 0
BEGIN
PRINT '';
RETURN;
END
-- Find the end of next substring to print.
SET #CurrLineEndIdx = CHARINDEX(CHAR(10), #msg);
IF #CurrLineEndIdx BETWEEN 1 AND 4000
BEGIN
SET #CurrLineEndIdx = #CurrLineEndIdx - 1
SET #SkipCount = 2;
END
ELSE
BEGIN
SET #CurrLineEndIdx = 4000;
SET #SkipCount = 1;
END
-- Loop: Print current substring, identify next substring (a do-while pattern is preferable but TSQL doesn't have one).
WHILE #CurrLineStartIdx < #MsgLen
BEGIN
-- Print substring.
PRINT SUBSTRING(#msg, #CurrLineStartIdx, (#CurrLineEndIdx - #CurrLineStartIdx)+1);
-- Move to start of next substring.
SET #CurrLineStartIdx = #CurrLineEndIdx + #SkipCount;
-- Find the end of next substring to print.
SET #CurrLineEndIdx = CHARINDEX(CHAR(10), #msg, #CurrLineStartIdx);
SET #CurrLineLen = #CurrLineEndIdx - #CurrLineStartIdx;
-- Find bounds of next substring to print.
IF #CurrLineLen BETWEEN 1 AND 4000
BEGIN
SET #CurrLineEndIdx = #CurrLineEndIdx - 1
SET #SkipCount = 2;
END
ELSE
BEGIN
SET #CurrLineEndIdx = #CurrLineStartIdx + 4000;
SET #SkipCount = 1;
END
END
END
This should work properly this is just an improvement of previous answers.
DECLARE #Counter INT
DECLARE #Counter1 INT
SET #Counter = 0
SET #Counter1 = 0
DECLARE #TotalPrints INT
SET #TotalPrints = (LEN(#QUERY) / 4000) + 1
print #TotalPrints
WHILE #Counter < #TotalPrints
BEGIN
-- Do your printing...
print(substring(#query,#COUNTER1,#COUNTER1+4000))
set #COUNTER1 = #Counter1+4000
SET #Counter = #Counter + 1
END
If the source code will not have issues with LF to be replaced by CRLF, No debugging is required by following simple codes outputs.
--http://stackoverflow.com/questions/7850477/how-to-print-varcharmax-using-print-statement
--Bill Bai
SET #SQL=replace(#SQL,char(10),char(13)+char(10))
SET #SQL=replace(#SQL,char(13)+char(13)+char(10),char(13)+char(10) )
DECLARE #Position int
WHILE Len(#SQL)>0
BEGIN
SET #Position=charindex(char(10),#SQL)
PRINT left(#SQL,#Position-2)
SET #SQL=substring(#SQL,#Position+1,len(#SQL))
end;
If someone interested I've ended up as generating a text file with powershell, executing scalar code:
$dbconn = "Data Source=sqlserver;" + "Initial Catalog=DatabaseName;" + "User Id=sa;Password=pass;"
$conn = New-Object System.Data.SqlClient.SqlConnection($dbconn)
$conn.Open()
$cmd = New-Object System.Data.SqlClient.SqlCommand("
set nocount on
DECLARE #sql nvarchar(max) = ''
SELECT
#sql += CHAR(13) + CHAR(10) + md.definition + CHAR(13) + CHAR(10) + 'GO'
FROM sys.objects AS obj
join sys.sql_modules AS md on md.object_id = obj.object_id
join sys.schemas AS sch on sch.schema_id = obj.schema_id
where obj.type = 'TR'
select #sql
", $conn)
$data = [string]$cmd.ExecuteScalar()
$conn.Close()
$data | Out-File -FilePath "C:\Users\Alexandru\Desktop\bigstring.txt"
This script it's for getting a big string with all the triggers from the DB.
Need help to create a function that returns TRUE or FALSE. TRUE - if type 1 or 3 words (like '__hello_', '_hello', '_hello my frend' - spaces should be cut), if the condition is not fulfilled FALSE
CREATE FUNCTION dbo.nazvFac(#f nvarchar(30))
RETURNS bit
AS
BEGIN
DECLARE #l int = 1, #s nvarchar(30), #i int = 0, #b bit
WHILE LTRIM(RTRIM(LEN(#f))) >= #l --error here, but I do not know how to fix it
BEGIN
SET #s = SUBSTRING(#f, #l, 1)
IF #s BETWEEN 'А' AND 'я'
SET #l += 1
ELSE IF #s = ' '
BEGIN
SET #l -= 1
SET #s = SUBSTRING(#f, #l, 1)
SET #s = RTRIM(#s)
SET #l += 2
SET #i += 1
END
ELSE
BREAK
END
IF #i = 0 OR #i = 2
SET #b = 'TRUE'
ELSE
SET #b = 'FALSE'
RETURN #b
END
GO
WHILE LTRIM(RTRIM(LEN(#f))) >= #l --error here, but I do not know how to fix it
LEN() returns an int, which you are then passing to a string function: RTRIM().
You want to return TRUE only if there are one or three words? This should do it:
CREATE FUNCTION dbo.nazvFac(#f NVARCHAR(30))
RETURNS BIT
AS
BEGIN
DECLARE #l INT, #b BIT
SET #l = LEN(#f) - LEN(REPLACE(#f, ' ', '')) + 1
IF #l == 1 OR #l == 3
SET #b = 'TRUE'
ELSE
SET #b = 'FALSE'
RETURN #b
END
Also, JC. is right about the len() error.
You should trim the string and then check the length.
CREATE FUNCTION dbo.nazvFac(#f NVARCHAR(30))
RETURNS BIT
AS
BEGIN
DECLARE #l INT = 1, #s NVARCHAR(30), #i INT = 0, #b BIT
WHILE LEN(LTRIM(RTRIM(#f))) >= #l --I think youn need to trim the string and then check length
BEGIN
SET #s = SUBSTRING(#f, #l, 1)
IF #s BETWEEN 'А' AND 'я'
SET #l += 1
ELSE IF #s = ' '
BEGIN
SET #l -= 1
SET #s = SUBSTRING(#f, #l, 1)
SET #s = RTRIM(#s)
SET #l += 2
SET #i += 1
END
ELSE
BREAK
END
IF #i = 0 OR #i = 2
SET #b = 'TRUE'
ELSE
SET #b = 'FALSE'
RETURN #b
END
GO
I have several occurrences of differences strings in the columns, like this example
'dsasdasdsd'+'ewewewew'+'45454545'+(avg('uuuuuuu'))
I need to split this string into several columns with the substrings that are between
aphostropes
like this:
Column 1 = dsasdasdsd
Column 2 = ewewewew
Column 3 = 45454545
Column 4 = uuuuuuu
The numbers of apperances are random, thefore the length of the original column is also not fixed (from 50 char to > 1000)
DECLARE #InStr VarChar(1000) = '''dsasdasdsd''+''ewewewew''+''45454545''+(avg(''uuuuuuu''))'''
DECLARE #intStart INT = 0
DECLARE #intEnd INT = 1
DECLARE #ColNo INT = 1
DECLARE #MyString VARCHAR(2000)
DECLARE #SelectString VARCHAR(8000) = 'SELECT '
WHILE(#intStart < LEN(#InStr) )
BEGIN
SELECT #intStart = CHARINDEX(CHAR(39), #InStr, 0) + 1
SELECT #intEnd = CHARINDEX(CHAR(39), #InStr, #intStart)
SELECT #SelectString = #SelectString + CHAR(39) + SUBSTRING(#InStr, #intStart, #intEnd - #intStart) + CHAR(39) + ' As [Column ' + CAST(#ColNo As Varchar) + '],'
SELECT #InStr = SUBSTRING(#InStr, #intEnd + 1, LEN(#InStr)-#intEnd )
SET #ColNo = #ColNo +1
END
SELECT #SelectString = LEFT(#SelectString, Len(#SelectString) -1)
EXEC (#SelectString)
I have been playing with this and this does run but unfortunately I don't have time right now to carry on with it but maybe you can improve on this?
HTH
You can try this:
create table tSqlStrings (sText nvarchar(1000))
insert tSqlStrings values('''dsasdasdsd''+''ewewewew''+''45454545''+(avg(''uuuuuuu''))')
create table tResults (
sColumn1 nvarchar(1000)
,sColumn2 nvarchar(1000)
,sColumn3 nvarchar(1000)
,sColumn4 nvarchar(1000)
)
and
DELETE tResults
DECLARE #sText nvarchar(1000) = (
SELECT
sText
FROM
tSqlStrings
)
DECLARE #lBegin int = CHARINDEX('''',#sText)
DECLARE #lEnd int = charindex('''',
substring(#sText,
CHARINDEX('''',#sText)+1,
len(#sText)))
DECLARE #sText0 nvarchar(1000)
DECLARE #sColumn1 nvarchar(1000)
DECLARE #sColumn2 nvarchar(1000)
DECLARE #sColumn3 nvarchar(1000)
DECLARE #sColumn4 nvarchar(1000)
DECLARE #iCnt int = 1
while #iCnt<=4
--(0<len(#sText) and 0<#lBegin and 0<#lEnd)
BEGIN
SET #sText0 = substring(#sText,#lBegin+1,#lEnd-2)
IF #iCnt=1 begin SET #sColumn1=#sText0 end
IF #iCnt=2 begin SET #sColumn2=#sText0 end
IF #iCnt=3 begin SET #sColumn3=#sText0 end
IF #iCnt=4 begin SET #sColumn4=#sText0 end
set #sText = substring(#sText,#lBegin + #lEnd+2,len(#sText))
SET #lBegin = CHARINDEX('''',#sText)
SET #lEnd = charindex('''',
substring(#sText,
CHARINDEX('''',#sText)+1,
len(#sText)))
SET #iCnt = #iCnt+1
END
INSERT
tResults (sColumn1,sColumn2,sColumn3,sColumn4)
VALUES (#sColumn1,#sColumn2,#sColumn3,#sColumn4)
SELECT * FROM tResults
on sql fiddle
You will be able to achieve this using CHARINDEX() and SUBSTRING()
Following example shows for splitting to 2 columns. When it has more columns, query will be get little more complicated. However, you can follow this to build your query.
SELECT OriginalColumn
, SUBSTRING(OriginalColumn, 1,CHARINDEX('x',OriginalColumn,1)-1) AS Column1
, SUBSTRING(OriginalColumn, CHARINDEX('x',OriginalColumn,1) + 1 ,CHARINDEX('x',OriginalColumn,CHARINDEX('x',OriginalColumn,1)-1)) AS Column2
FROM YourTable
I have used "x" as the delimiter in the example. Following is a sample result
try this:
declare #delim char
set #delim = ''''
declare #str nvarchar(max)
declare #substr nvarchar(max)
declare #newstr nvarchar(max)
declare #tmpTable table (partStrings nvarchar(max))
declare #count int
set #count = 0
select #str = <***Your String***>
while(charindex(#delim,#str) != 0)
begin
set #count = #count + 1
Select #substr = substring(#str,1,charindex(#delim,#str)-1)
if((#count % 2) = 0)
begin
insert into #tmpTable values(#substr)
end
Set #newstr = substring(#str,charindex(#delim,#str)+1,len(#str)-charindex(#delim,#str))
set #str = #newstr
end
select partStrings from #tmpTable
I have a code which is:
DECLARE #Script VARCHAR(MAX)
SELECT #Script = definition FROM manged.sys.all_sql_modules sq
where sq.object_id = (SELECT object_id from managed.sys.objects
Where type = 'P' and Name = 'usp_gen_data')
Declare #Pos int
SELECT #pos=CHARINDEX(CHAR(13)+CHAR(10),#script,7500)
PRINT SUBSTRING(#Script,1,#Pos)
PRINT SUBSTRING(#script,#pos,8000)
The length of the Script is around 10,000 Characters and Since I am using print Statement which can hold only max of 8000. So I am using two print statements.
The problem is when I have a script which is of say 18000 characters then I used to use 3 print statements.
So Is there a way that I could set the number of print statements depending on the length of the script?
I know it's an old question, but what I did is not mentioned here.
For me the following worked (for up to 16k chars)
DECLARE #info NVARCHAR(MAX)
--SET #info to something big
PRINT CAST(#info AS NTEXT)
If you have more than 16k chars you can combine with #Yovav's answer like this (64k should be enough for anyone ;)
print cast( substring(#info, 1, 16000) as ntext )
print cast( substring(#info, 16001, 32000) as ntext )
print cast( substring(#info, 32001, 48000) as ntext )
print cast( substring(#info, 48001, 64000) as ntext )
The following workaround does not use the PRINT statement. It works well in combination with the SQL Server Management Studio.
SELECT CAST('<root><![CDATA[' + #MyLongString + ']]></root>' AS XML)
You can click on the returned XML to expand it in the built-in XML viewer.
There is a pretty generous client side limit on the displayed size. Go to Tools/Options/Query Results/SQL Server/Results to Grid/XML data to adjust it if needed.
Here is how this should be done:
DECLARE #String NVARCHAR(MAX);
DECLARE #CurrentEnd BIGINT; /* track the length of the next substring */
DECLARE #offset tinyint; /*tracks the amount of offset needed */
set #string = replace( replace(#string, char(13) + char(10), char(10)) , char(13), char(10))
WHILE LEN(#String) > 1
BEGIN
IF CHARINDEX(CHAR(10), #String) between 1 AND 4000
BEGIN
SET #CurrentEnd = CHARINDEX(char(10), #String) -1
set #offset = 2
END
ELSE
BEGIN
SET #CurrentEnd = 4000
set #offset = 1
END
PRINT SUBSTRING(#String, 1, #CurrentEnd)
set #string = SUBSTRING(#String, #CurrentEnd+#offset, LEN(#String))
END /*End While loop*/
Taken from http://ask.sqlservercentral.com/questions/3102/any-way-around-the-print-limit-of-nvarcharmax-in-s.html
You could do a WHILE loop based on the count on your script length divided by 8000.
EG:
DECLARE #Counter INT
SET #Counter = 0
DECLARE #TotalPrints INT
SET #TotalPrints = (LEN(#script) / 8000) + 1
WHILE #Counter < #TotalPrints
BEGIN
-- Do your printing...
SET #Counter = #Counter + 1
END
Came across this question and wanted something more simple... Try the following:
SELECT [processing-instruction(x)]=#Script FOR XML PATH(''),TYPE
I just created a SP out of Ben's great answer:
/*
---------------------------------------------------------------------------------
PURPOSE : Print a string without the limitation of 4000 or 8000 characters.
https://stackoverflow.com/questions/7850477/how-to-print-varcharmax-using-print-statement
USAGE :
DECLARE #Result NVARCHAR(MAX)
SET #Result = 'TEST'
EXEC [dbo].[Print_Unlimited] #Result
---------------------------------------------------------------------------------
*/
ALTER PROCEDURE [dbo].[Print_Unlimited]
#String NVARCHAR(MAX)
AS
BEGIN
BEGIN TRY
---------------------------------------------------------------------------------
DECLARE #CurrentEnd BIGINT; /* track the length of the next substring */
DECLARE #Offset TINYINT; /* tracks the amount of offset needed */
SET #String = replace(replace(#String, CHAR(13) + CHAR(10), CHAR(10)), CHAR(13), CHAR(10))
WHILE LEN(#String) > 1
BEGIN
IF CHARINDEX(CHAR(10), #String) BETWEEN 1 AND 4000
BEGIN
SET #CurrentEnd = CHARINDEX(CHAR(10), #String) -1
SET #Offset = 2
END
ELSE
BEGIN
SET #CurrentEnd = 4000
SET #Offset = 1
END
PRINT SUBSTRING(#String, 1, #CurrentEnd)
SET #String = SUBSTRING(#String, #CurrentEnd + #Offset, LEN(#String))
END /*End While loop*/
---------------------------------------------------------------------------------
END TRY
BEGIN CATCH
DECLARE #ErrorMessage VARCHAR(4000)
SELECT #ErrorMessage = ERROR_MESSAGE()
RAISERROR(#ErrorMessage,16,1)
END CATCH
END
This proc correctly prints out VARCHAR(MAX) parameter considering wrapping:
CREATE PROCEDURE [dbo].[Print]
#sql varchar(max)
AS
BEGIN
declare
#n int,
#i int = 0,
#s int = 0, -- substring start posotion
#l int; -- substring length
set #n = ceiling(len(#sql) / 8000.0);
while #i < #n
begin
set #l = 8000 - charindex(char(13), reverse(substring(#sql, #s, 8000)));
print substring(#sql, #s, #l);
set #i = #i + 1;
set #s = #s + #l + 2; -- accumulation + CR/LF
end
return 0
END
I was looking to use the print statement to debug some dynamic sql as I imagin most of you are using print for simliar reasons.
I tried a few of the solutions listed and found that Kelsey's solution works with minor tweeks (#sql is my #script) n.b. LENGTH isn't a valid function:
--http://stackoverflow.com/questions/7850477/how-to-print-varcharmax-using-print-statement
--Kelsey
DECLARE #Counter INT
SET #Counter = 0
DECLARE #TotalPrints INT
SET #TotalPrints = (LEN(#sql) / 4000) + 1
WHILE #Counter < #TotalPrints
BEGIN
PRINT SUBSTRING(#sql, #Counter * 4000, 4000)
SET #Counter = #Counter + 1
END
PRINT LEN(#sql)
This code does as commented add a new line into the output, but for debugging this isn't a problem for me.
Ben B's solution is perfect and is the most elegent, although for debugging is a lot of lines of code so I choose to use my slight modification of Kelsey's. It might be worth creating a system like stored procedure in msdb for Ben B's code which could be reused and called in one line?
Alfoks' code doesn't work unfortunately because that would have been easier.
You can use this
declare #i int = 1
while Exists(Select(Substring(#Script,#i,4000))) and (#i < LEN(#Script))
begin
print Substring(#Script,#i,4000)
set #i = #i+4000
end
Or simply:
PRINT SUBSTRING(#SQL_InsertQuery, 1, 8000)
PRINT SUBSTRING(#SQL_InsertQuery, 8001, 16000)
There is great function called PrintMax written by Bennett Dill.
Here is slightly modified version that uses temp stored procedure to avoid "schema polution"(idea from https://github.com/Toolien/sp_GenMerge/blob/master/sp_GenMerge.sql)
EXEC (N'IF EXISTS (SELECT * FROM tempdb.sys.objects
WHERE object_id = OBJECT_ID(N''tempdb..#PrintMax'')
AND type in (N''P'', N''PC''))
DROP PROCEDURE #PrintMax;');
EXEC (N'CREATE PROCEDURE #PrintMax(#iInput NVARCHAR(MAX))
AS
BEGIN
IF #iInput IS NULL
RETURN;
DECLARE #ReversedData NVARCHAR(MAX)
, #LineBreakIndex INT
, #SearchLength INT;
SET #SearchLength = 4000;
WHILE LEN(#iInput) > #SearchLength
BEGIN
SET #ReversedData = LEFT(#iInput COLLATE DATABASE_DEFAULT, #SearchLength);
SET #ReversedData = REVERSE(#ReversedData COLLATE DATABASE_DEFAULT);
SET #LineBreakIndex = CHARINDEX(CHAR(10) + CHAR(13),
#ReversedData COLLATE DATABASE_DEFAULT);
PRINT LEFT(#iInput, #SearchLength - #LineBreakIndex + 1);
SET #iInput = RIGHT(#iInput, LEN(#iInput) - #SearchLength
+ #LineBreakIndex - 1);
END;
IF LEN(#iInput) > 0
PRINT #iInput;
END;');
DBFiddle Demo
EDIT:
Using CREATE OR ALTER we could avoid two EXEC calls:
EXEC (N'CREATE OR ALTER PROCEDURE #PrintMax(#iInput NVARCHAR(MAX))
AS
BEGIN
IF #iInput IS NULL
RETURN;
DECLARE #ReversedData NVARCHAR(MAX)
, #LineBreakIndex INT
, #SearchLength INT;
SET #SearchLength = 4000;
WHILE LEN(#iInput) > #SearchLength
BEGIN
SET #ReversedData = LEFT(#iInput COLLATE DATABASE_DEFAULT, #SearchLength);
SET #ReversedData = REVERSE(#ReversedData COLLATE DATABASE_DEFAULT);
SET #LineBreakIndex = CHARINDEX(CHAR(10) + CHAR(13), #ReversedData COLLATE DATABASE_DEFAULT);
PRINT LEFT(#iInput, #SearchLength - #LineBreakIndex + 1);
SET #iInput = RIGHT(#iInput, LEN(#iInput) - #SearchLength + #LineBreakIndex - 1);
END;
IF LEN(#iInput) > 0
PRINT #iInput;
END;');
db<>fiddle Demo
create procedure dbo.PrintMax #text nvarchar(max)
as
begin
declare #i int, #newline nchar(2), #print varchar(max);
set #newline = nchar(13) + nchar(10);
select #i = charindex(#newline, #text);
while (#i > 0)
begin
select #print = substring(#text,0,#i);
while (len(#print) > 8000)
begin
print substring(#print,0,8000);
select #print = substring(#print,8000,len(#print));
end
print #print;
select #text = substring(#text,#i+2,len(#text));
select #i = charindex(#newline, #text);
end
print #text;
end
Uses Line Feeds and spaces as a good break point:
declare #sqlAll as nvarchar(max)
set #sqlAll = '-- Insert all your sql here'
print '#sqlAll - truncated over 4000'
print #sqlAll
print ' '
print ' '
print ' '
print '#sqlAll - split into chunks'
declare #i int = 1, #nextspace int = 0, #newline nchar(2)
set #newline = nchar(13) + nchar(10)
while Exists(Select(Substring(#sqlAll,#i,3000))) and (#i < LEN(#sqlAll))
begin
while Substring(#sqlAll,#i+3000+#nextspace,1) <> ' ' and Substring(#sqlAll,#i+3000+#nextspace,1) <> #newline
BEGIN
set #nextspace = #nextspace + 1
end
print Substring(#sqlAll,#i,3000+#nextspace)
set #i = #i+3000+#nextspace
set #nextspace = 0
end
print ' '
print ' '
print ' '
My PrintMax version for prevent bad line breaks on output:
CREATE PROCEDURE [dbo].[PrintMax](#iInput NVARCHAR(MAX))
AS
BEGIN
Declare #i int;
Declare #NEWLINE char(1) = CHAR(13) + CHAR(10);
While LEN(#iInput)>0 BEGIN
Set #i = CHARINDEX(#NEWLINE, #iInput)
if #i>8000 OR #i=0 Set #i=8000
Print SUBSTRING(#iInput, 0, #i)
Set #iInput = SUBSTRING(#iInput, #i+1, LEN(#iInput))
END
END
Here's another version. This one extracts each substring to print from the main string instead of taking reducing the main string by 4000 on each loop (which might create a lot of very long strings under the hood - not sure).
CREATE PROCEDURE [Internal].[LongPrint]
#msg nvarchar(max)
AS
BEGIN
-- SET NOCOUNT ON reduces network overhead
SET NOCOUNT ON;
DECLARE #MsgLen int;
DECLARE #CurrLineStartIdx int = 1;
DECLARE #CurrLineEndIdx int;
DECLARE #CurrLineLen int;
DECLARE #SkipCount int;
-- Normalise line end characters.
SET #msg = REPLACE(#msg, char(13) + char(10), char(10));
SET #msg = REPLACE(#msg, char(13), char(10));
-- Store length of the normalised string.
SET #MsgLen = LEN(#msg);
-- Special case: Empty string.
IF #MsgLen = 0
BEGIN
PRINT '';
RETURN;
END
-- Find the end of next substring to print.
SET #CurrLineEndIdx = CHARINDEX(CHAR(10), #msg);
IF #CurrLineEndIdx BETWEEN 1 AND 4000
BEGIN
SET #CurrLineEndIdx = #CurrLineEndIdx - 1
SET #SkipCount = 2;
END
ELSE
BEGIN
SET #CurrLineEndIdx = 4000;
SET #SkipCount = 1;
END
-- Loop: Print current substring, identify next substring (a do-while pattern is preferable but TSQL doesn't have one).
WHILE #CurrLineStartIdx < #MsgLen
BEGIN
-- Print substring.
PRINT SUBSTRING(#msg, #CurrLineStartIdx, (#CurrLineEndIdx - #CurrLineStartIdx)+1);
-- Move to start of next substring.
SET #CurrLineStartIdx = #CurrLineEndIdx + #SkipCount;
-- Find the end of next substring to print.
SET #CurrLineEndIdx = CHARINDEX(CHAR(10), #msg, #CurrLineStartIdx);
SET #CurrLineLen = #CurrLineEndIdx - #CurrLineStartIdx;
-- Find bounds of next substring to print.
IF #CurrLineLen BETWEEN 1 AND 4000
BEGIN
SET #CurrLineEndIdx = #CurrLineEndIdx - 1
SET #SkipCount = 2;
END
ELSE
BEGIN
SET #CurrLineEndIdx = #CurrLineStartIdx + 4000;
SET #SkipCount = 1;
END
END
END
This should work properly this is just an improvement of previous answers.
DECLARE #Counter INT
DECLARE #Counter1 INT
SET #Counter = 0
SET #Counter1 = 0
DECLARE #TotalPrints INT
SET #TotalPrints = (LEN(#QUERY) / 4000) + 1
print #TotalPrints
WHILE #Counter < #TotalPrints
BEGIN
-- Do your printing...
print(substring(#query,#COUNTER1,#COUNTER1+4000))
set #COUNTER1 = #Counter1+4000
SET #Counter = #Counter + 1
END
If the source code will not have issues with LF to be replaced by CRLF, No debugging is required by following simple codes outputs.
--http://stackoverflow.com/questions/7850477/how-to-print-varcharmax-using-print-statement
--Bill Bai
SET #SQL=replace(#SQL,char(10),char(13)+char(10))
SET #SQL=replace(#SQL,char(13)+char(13)+char(10),char(13)+char(10) )
DECLARE #Position int
WHILE Len(#SQL)>0
BEGIN
SET #Position=charindex(char(10),#SQL)
PRINT left(#SQL,#Position-2)
SET #SQL=substring(#SQL,#Position+1,len(#SQL))
end;
If someone interested I've ended up as generating a text file with powershell, executing scalar code:
$dbconn = "Data Source=sqlserver;" + "Initial Catalog=DatabaseName;" + "User Id=sa;Password=pass;"
$conn = New-Object System.Data.SqlClient.SqlConnection($dbconn)
$conn.Open()
$cmd = New-Object System.Data.SqlClient.SqlCommand("
set nocount on
DECLARE #sql nvarchar(max) = ''
SELECT
#sql += CHAR(13) + CHAR(10) + md.definition + CHAR(13) + CHAR(10) + 'GO'
FROM sys.objects AS obj
join sys.sql_modules AS md on md.object_id = obj.object_id
join sys.schemas AS sch on sch.schema_id = obj.schema_id
where obj.type = 'TR'
select #sql
", $conn)
$data = [string]$cmd.ExecuteScalar()
$conn.Close()
$data | Out-File -FilePath "C:\Users\Alexandru\Desktop\bigstring.txt"
This script it's for getting a big string with all the triggers from the DB.
I have a string 'some.file.name',I want to grab 'some.file'.
To do that,I need to find the last occurrence of '.' in a string.
My solution is :
declare #someStr varchar(20)
declare #reversedStr varchar(20)
declare #index int
set #someStr = '001.002.003'
set #reversedStr = reverse(#someStr)
set #index = len(#someStr) - charindex('.',#reversedStr)
select left(#someStr,#index)
Well,isn't it too complicated?I was just intented to using 'some.file' in a where-clause.
Anyone has a good idea?
What do you need to do with it?? Do you need to grab the characters after the last occurence of a given delimiter?
If so: reverse the string and search using the normal CHARINDEX:
declare #test varchar(100)
set #test = 'some.file.name'
declare #reversed varchar(100)
set #reversed = REVERSE(#test)
select
REVERSE(SUBSTRING(#reversed, CHARINDEX('.', #reversed)+1, 100))
You'll get back "some.file" - the characters up to the last "." in the original file name.
There's no "LASTCHARINDEX" or anything like that in SQL Server directly. What you might consider doing in SQL Server 2005 and up is great a .NET extension library and deploy it as an assembly into SQL Server - T-SQL is not very strong with string manipulation, whereas .NET really is.
A very simple way is:
SELECT
RIGHT(#str, CHARINDEX('.', REVERSE(#str)) - 1)
This will also work:
DECLARE
#test VARCHAR(100)
SET #test = 'some.file.name'
SELECT
LEFT(#test, LEN(#test) - CHARINDEX('.', REVERSE(#test)))
Take one ')'
declare #test varchar(100)
set #test = 'some.file.name'
select left(#test,charindex('.',#test)+charindex('.',#test)-1)
CREATE FUNCTION [dbo].[Instr] (
-------------------------------------------------------------------------------------------------
-- Name: [dbo].[Instr]
-- Purpose: Find The Nth Value Within A String
-------------------------------------------------------------------------------------------------
-- Revisions:
-- 25-FEB-2011 - HESSR - Initial Revision
-------------------------------------------------------------------------------------------------
-- Parameters:
-- 1) #in_FindString - NVARCHAR(MAX) - INPUT - Input Find String
-- 2) #in_String - NVARCHAR(MAX) - INPUT - Input String
-- 3) #in_StartPos - SMALLINT - INPUT - Position In The String To Start Looking From
-- (If Start Position Is Negative, Search Begins At The End Of The String)
-- (Negative 1 Starts At End Position 1, Negative 3 Starts At End Position Minus 2)
-- 4) #in_Nth - SMALLINT - INPUT - Nth Occurrence To Find The Location For
-------------------------------------------------------------------------------------------------
-- Returns: SMALLINT - Position Of String Segment (Not Found = 0)
-------------------------------------------------------------------------------------------------
#in_FindString NVARCHAR(MAX),
#in_String NVARCHAR(MAX),
#in_StartPos SMALLINT = NULL,
#in_Nth SMALLINT = NULL
)
RETURNS SMALLINT
AS
BEGIN
DECLARE #loc_FindString NVARCHAR(MAX);
DECLARE #loc_String NVARCHAR(MAX);
DECLARE #loc_Position SMALLINT;
DECLARE #loc_StartPos SMALLINT;
DECLARE #loc_Nth SMALLINT;
DECLARE #loc_Idx SMALLINT;
DECLARE #loc_FindLength SMALLINT;
DECLARE #loc_Length SMALLINT;
SET #loc_FindString = #in_FindString;
SET #loc_String = #in_String;
SET #loc_Nth = ISNULL(ABS(#in_Nth), 1);
SET #loc_FindLength = LEN(#loc_FindString+N'.') - 1;
SET #loc_Length = LEN(#loc_String+N'.') - 1;
SET #loc_StartPos = ISNULL(#in_StartPos, 1);
SET #loc_Idx = 0;
IF (#loc_StartPos = ABS(#loc_StartPos))
BEGIN
WHILE (#loc_Idx < #loc_Nth)
BEGIN
SET #loc_Position = CHARINDEX(#loc_FindString,#loc_String,#loc_StartPos);
IF (#loc_Position > 0)
SET #loc_StartPos = #loc_Position + #loc_FindLength
ELSE
SET #loc_Idx = #loc_Nth;
SET #loc_Idx = #loc_Idx + 1;
END;
END
ELSE
BEGIN
SET #loc_StartPos = ABS(#loc_StartPos);
SET #loc_FindString = REVERSE(#in_FindString);
SET #loc_String = REVERSE(#in_String);
WHILE (#loc_Idx < #loc_Nth)
BEGIN
SET #loc_Position = CHARINDEX(#loc_FindString,#loc_String,#loc_StartPos);
IF (#loc_Position > 0)
SET #loc_StartPos = #loc_Position + #loc_FindLength
ELSE
SET #loc_Idx = #loc_Nth;
SET #loc_Idx = #loc_Idx + 1;
END;
IF (#loc_Position > 0)
SET #loc_Position = #loc_Length - #loc_Position + (1 - #loc_FindLength) + 1;
END;
RETURN (#loc_Position);
END;
GO
Here is a shorter version
DECLARE #someStr varchar(20)
set #someStr = '001.002.003'
SELECT REVERSE(Substring(REVERSE(#someStr),CHARINDEX('.', REVERSE(#someStr))+1,20))