when i create a function in sql server 2012 , in this function
CREATE FUNCTION howords (#str nvarchar(50), #word nvarchar(50))
RETURNS int
AS
BEGIN
DECLARE #tempstr nvarchar(max)
DECLARE #space int
DECLARE #count int
DECLARE #size int
SET #count = 0
WHILE (LEN(#str) >= 0)
BEGIN
SET #space = CHARINDEX(' ', #str, 1)
SET #tempstr = LEFT(#str, (#space - 1))
IF (#tempstr = #word)
SET #count = #count + 1
SET #size = LEN(#tempstr)
IF (((LEN(#str)) - #space) > 0)
SET #str = SUBSTRING(#str, #space + 1, ((LEN(#str)) - #space))
IF (((LEN(#str)) - #space) <= 0)
BEGIN
IF (#str = #word)
SET #count = 0
WHILE (LEN(#str) > 0)
BEGIN
SET #space = CHARINDEX(' ', #str + 1)
SET #tempstr = LEFT(#str, (#space - 1))
IF (#tempstr = #word)
SET #count = #count + 1
SET #size = LEN(#tempstr)
IF (((LEN(#str)) - #space) > 0)
SET #str = SUBSTRING(#str, #space + 1, ((LEN(#str)) - #space))
IF (((LEN(#str)) - #space) <= 0)
BEGIN
IF (#str = #word)
SET #count = #count + 1
BREAK
END
END
END
END
RETURN #count
END
when i exec this query
select dbo.howords ('hello my hello','hello' )
i want to give me count (2)
but it give me an error
MSG 537 :Invalid length parameter passed to the LEFT or SUBSTRING function.
any help?
Try this
DECLARE #tosearch VARCHAR(MAX)='Hello'
DECLARE #string VARCHAR(MAX)='hello my hello'
SELECT (DATALENGTH(#string)-DATALENGTH(REPLACE(#string,#tosearch,'')))/DATALENGTH(#tosearch)
AS OccurrenceCount
Related
I have a sql table that contains an employee's full name in all caps (i.e. SMITH-EASTMAN,JIM M).
I need to be able to separate the full name into two separate columns (Last Name and First Name). This part is going well. Now I could use some assistance with removing the capital letters and putting it in normal case.
How can I take the results of my common table expression and pass them into a function?
WITH CTE AS
(
SELECT FullName = [Employee Name],
LastName = SUBSTRING([Employee Name], 1, CHARINDEX(',',[Employee Name])-1),
FirstNameStartPos = CHARINDEX(',',[Employee Name]) + 1,
MidlleInitialOrFirstNameStartPos = CHARINDEX(' ',[Employee Name]),
MiddleInitialOrSecondFirstName = SUBSTRING([Employee Name], CHARINDEX(' ',[Employee Name]),LEN([Employee Name])),
MiddleInitialOrSecondFirstNameLen = LEN(SUBSTRING([Employee Name], CHARINDEX(' ',[Employee Name]),LEN([Employee Name]))) - 1
FROM ['Med-PS PCN Mapping$']
WHERE [PS Employee ID] IS NOT NULL
),
CTE2 AS
(
SELECT FullName = CTE.FullName,
DerivedFirstName = CASE
WHEN CTE.MiddleInitialOrSecondFirstNameLen = 1
THEN SUBSTRING(CTE.FullName, CTE.FirstNameStartPos, CTE.MidlleInitialOrFirstNameStartPos - CTE.FirstNameStartPos)
ELSE SUBSTRING(CTE.FullName, CTE.FirstNameStartPos, CTE.FirstNameStartPos + CTE.MiddleInitialOrSecondFirstNameLen)
END,
DerivedLastName = CTE.LastName
FROM CTE
)
SELECT *
FROM CTE2
RESULTS
FullName DerivedFirstName DerivedLastName
SMITH-EASTMAN,JIM M JIM SMITH-EASTMAN
O'DAY,MARTIN C MARTIN O'DAY
TROUT,MADISON MARIE MADISON MARI TROUT
CREATE FUNCTION [dbo].[FixCap] ( #InputString varchar(4000) )
RETURNS VARCHAR(4000)
AS
BEGIN
DECLARE #Index INT
DECLARE #Char CHAR(1)
DECLARE #PrevChar CHAR(1)
DECLARE #OutputString VARCHAR(255)
SET #OutputString = LOWER(#InputString)
SET #Index = 1
WHILE #Index <= LEN(#InputString)
BEGIN
SET #Char = SUBSTRING(#InputString, #Index, 1)
SET #PrevChar = CASE WHEN #Index = 1 THEN ' '
ELSE SUBSTRING(#InputString, #Index - 1, 1)
END
IF #PrevChar IN (' ', ';', ':', '!', '?', ',', '.', '_', '-', '/', '&', '''', '(')
BEGIN
IF #PrevChar != '''' OR UPPER(#Char) != 'S'
SET #OutputString = STUFF(#OutputString, #Index, 1, UPPER(#Char))
END
SET #Index = #Index + 1
END
RETURN #OutputString
END
GO
select [dbo].[FixCap] (pass in DerivedFirstName from CTE2);
select [dbo].[FixCap] (pass in DerivedLastName from CTE2);
Do you want something like INITCAP ?
CREATE FUNCTION dbo.F_INITCAP (#PHRASE NVARCHAR(max))
RETURNS NVARCHAR(max)
WITH RETURNS NULL ON NULL INPUT
AS
BEGIN
IF LEN(#PHRASE) < 1 RETURN #PHRASE;
DECLARE #I INT = 1, #C CHAR(1), #P BIT = 0, #OUT VARCHAR(max) = '';
WHILE #I <= LEN(#PHRASE)
BEGIN
SET #C = SUBSTRING(#PHRASE, #I, 1);
IF #C BETWEEN 'A' AND 'Z' COLLATE Latin1_General_CI_AI
BEGIN
IF #P = 0
SET #OUT = #OUT + UPPER(#C);
ELSE
SET #OUT = #OUT + LOWER(#C);
SET #P = 1
END
ELSE
BEGIN
SET #P = 0;
SET #OUT = #OUT + LOWER(#C);
END
SET #I = #I + 1;
END
RETURN #OUT;
END
GO
I recently came across the following FUNCTION in stackoverflow:
CREATE FUNCTION dbo.UrlDecode(#url varchar(3072))
RETURNS varchar(3072)
AS
BEGIN
DECLARE #count int, #c char(1), #cenc char(2), #i int, #urlReturn varchar(3072)
SET #count = Len(#url)
SET #i = 1
SET #urlReturn = ''
WHILE (#i <= #count)
BEGIN
SET #c = substring(#url, #i, 1)
IF #c LIKE '[!%]' ESCAPE '!'
BEGIN
SET #cenc = substring(#url, #i + 1, 2)
SET #c = CHAR(CASE WHEN SUBSTRING(#cenc, 1, 1) LIKE '[0-9]'
THEN CAST(SUBSTRING(#cenc, 1, 1) as int)
ELSE CAST(ASCII(UPPER(SUBSTRING(#cenc, 1, 1)))-55 as int)
END * 16 +
CASE WHEN SUBSTRING(#cenc, 2, 1) LIKE '[0-9]'
THEN CAST(SUBSTRING(#cenc, 2, 1) as int)
ELSE CAST(ASCII(UPPER(SUBSTRING(#cenc, 2, 1)))-55 as int)
END)
SET #urlReturn = #urlReturn + #c
SET #i = #i + 2
END
ELSE
BEGIN
SET #urlReturn = #urlReturn + #c
END
SET #i = #i +1
END
RETURN #urlReturn
END
GO
I am trying to pass the following URL as an input to get the decoded URL as output using the following command:
DECLARE #urlReturn nvarchar(3072);
EXEC dbo.UrlDecode2 #url = 'https%3a%2f%2fin.mathworks.com';
PRINT #urlReturn;
GO
Initially tried the following:
exec dbo.UrlDecode2 #url = 'https%3a%2f%2fin.mathworks.com';
go
The function decoded the encoded parts in the URL. I am totally new to PL/SQL. Could someone tell me where I am going wrong and how to print the decoded URL.
Declare #URL varchar(500)
Set #URL = dbo.UrlDecode2('https%3a%2f%2fin.mathworks.com')
Returns
https://in.mathworks.com
Or within a Select
Select URL = dbo.UrlDecode2('https%3a%2f%2fin.mathworks.com')
I have my table with Column MailText which has values like
1. <strong>abc</strong>:<description1> <strong>bcd</strong>:<description2>
2. <strong>efg</strong>:<description3> <strong>hgl</strong>:<description7>
Upon update I want values like
1. <strong>abc</strong>:<abc> <strong>bcd</strong>:<bcd>
2. <strong>efg</strong>:<efg> <strong>hgl</strong>:<hgl>
Please help with dynamic replacement that it would update all string within <strong> tag to <description>. <strong> tag may contain any values.
CREATE FUNCTION GetString
(
#s NVARCHAR(MAX)
)
RETURNS NVARCHAR(MAX)
AS
BEGIN
DECLARE #trav NVARCHAR(2000) = #s,
#length INT,
#count INT = 1,
#startIndex INT = 0,
#endIndex INT = 0,
#replaceStartIndex INT = 0,
#repalceEndIndex INT = 0,
#replaceword NVARCHAR(2000),
#newWord NVARCHAR(2000)
SELECT #length = LEN(#Trav)
WHILE ((#count + #startIndex) <= #length)
BEGIN
SET #startIndex = CHARINDEX('<strong>', #trav, #startIndex) + LEN('<strong>')
IF (#startIndex > 8)
BEGIN
SET #endIndex = CHARINDEX('</strong>', #trav, #startIndex)
SET #newWord = SUBSTRING(#trav, #startIndex, (#endIndex - #startIndex))
SET #replaceStartIndex = CHARINDEX(':', #trav, #startIndex) + 2
SET #repalceEndIndex = CHARINDEX('>', #trav, #replaceStartIndex)
SET #replaceword = SUBSTRING(
#trav,
#replaceStartIndex,
(#repalceEndIndex - #replaceStartIndex)
)
--SELECT #replaceword as 'repword', #newWord as 'newword'
SET #trav = REPLACE (#trav, #replaceword, #newWord)
SET #count = #repalceEndIndex
END
ELSE
BEGIN
SET #count = #count + 1
END
END
RETURN #trav
END
GO
IF OBJECT_ID('tempdb..#table') IS NOT NULL
DROP TABLE #table
CREATE TABLE #table
(
string VARCHAR(1000)
)
INSERT INTO #table
SELECT
'1. <strong>abc</strong>:<description1> <strong>bcd</strong>:<description2>'
INSERT INTO #table
SELECT
'2. <strong>efg</strong>:<description3> <strong>hgl</strong>:<description7>'
UPDATE #table
SET string = [dbo].[GetString](#table.string)
SELECT *
FROM #table
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 found the following stored procedure from here, while creating this stored procedure in my database, I get this error message: (I'm running SQL Server 2008 Developer)
Msg 102, Level 15, State 1, Procedure HighLightSearch, Line 23
Incorrect syntax near '+'.
Here is the full Stored Procedure code:
CREATE FUNCTION [dbo].[HighLightSearch](#contents NVARCHAR(MAX), #searchTerm NVARCHAR(4000), #style NVARCHAR(4000), #maxLen INT)
RETURNS NVARCHAR(MAX)
AS
BEGIN
DECLARE #c NCHAR(1)
DECLARE #len INT = 0
DECLARE #l INT = 0
DECLARE #p INT = 0
DECLARE #prevPos INT = 0
DECLARE #margin INT
DECLARE #term NVARCHAR(4000)
DECLARE #retval NVARCHAR(MAX) = ''
DECLARE #positions TABLE
(
S INT,
L INT
)
-- find all occurances of the search term
DECLARE cur1 CURSOR FOR
SELECT display_term FROM sys.dm_fts_parser(N'FORMSOF(FREETEXT, "' + #searchTerm + '")', 1033, 0, 1)
OPEN cur1
FETCH NEXT FROM cur1 INTO #term
WHILE ##FETCH_STATUS = 0
BEGIN
WHILE 1 = 1
BEGIN
SET #p = CHARINDEX(#term, #contents, #p)
IF #p <= 0 BREAK
SET #l = LEN(#term)
IF #p > 0 BEGIN
SET #c = SUBSTRING(#contents, #p - 1, 1)
IF #c <> ' ' AND #c <> NCHAR(9) AND #c <> NCHAR(13) AND #c <> NCHAR(10) BREAK
END
INSERT INTO #positions (S, L) VALUES(#p, #l)
SET #p = #p + LEN(#term)
END
FETCH NEXT FROM cur1 INTO #term
END
CLOSE cur1
DEALLOCATE cur1
-- build the result string
DECLARE cur2 CURSOR FOR
SELECT S, MAX(L)
FROM #positions
GROUP BY S
ORDER BY S
SET #margin = LOG(#maxLen) * 5
IF #margin > #maxLen / 4 SET #margin = #maxLen / 4
SELECT #prevPos = MIN(S) - #margin FROM #positions
OPEN cur2
FETCH NEXT FROM cur2 INTO #p, #l
WHILE ##FETCH_STATUS = 0 AND #len < #maxLen
BEGIN
SET #retval = #retval + SUBSTRING(#contents, #prevPos, #p - #prevPos)
SET #retval = #retval + '<span style="' + #style + '">' + SUBSTRING(#contents, #p, #l) + '</span>'
SET #len = #len + #p - #prevPos + #l
SET #prevPos = #p + #l
FETCH NEXT FROM cur2 INTO #p, #l
END
CLOSE cur2
DEALLOCATE cur2
SET #margin = LOG(#maxLen) * 5
IF #margin + #len < #maxLen SET #margin = #maxLen - #len
IF #margin > 0 SET #retval = #retval + SUBSTRING(#contents, #prevPos, #l)
RETURN '...' + #retval + '...'
END
Try doing
DECLARE #var NVARCHAR(4000)
SET #var=N'FORMSOF(FREETEXT, "' + #searchTerm + '")'
DECLARE cur1 CURSOR FOR
SELECT display_term FROM sys.dm_fts_parser(#var, 1033, 0, 1)