SQL Server 2008 :: Using Left And Charindex To Parse String / Getting Rid Of Rest Of Data
Jun 16, 2015
I am trying to erase some erroneous bad data in my table. The description column has a lot of </div>oqwiroiweuru</a> weird data attached to it, i want to keep the data to the left of where the </div> erroneous data begins
update MyTable
set Description = LEFT(Description(CHARINDEX('<',Description)-1)) where myid = 1
that totally works.
update MyTable
set Description = LEFT(Description(CHARINDEX('<',Description)-1)) where myid >= 2
gives me a Invalid length parameter passed to the LEFT or SUBSTRING function. The statement has been terminated error.
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Mar 30, 2015
SELECT LEFT(InstanceName,CHARINDEX(' ',InstanceName)-1)
FROM ServerDB
Returns the following error.
Invalid length parameter passed to the SUBSTRING function.
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Jan 15, 2008
Hi,
I've the following query. I'm using the yellow highlighted to join 2 tables, as these tables dont have a relationship between them.
The format of the name field is 'AAAA-BBBBBB-123'
here A will be only 4 chars, followed by '-' B can be any number of chars again followed by '-' and the last is the id which I'm using to do a join. This query will fail if the id is just 1 digit as its taking the last 3 chars as the id.
I dont know how to get the id from the right using charindex. Charindex would search for the first occurence of '-' from the right and get the chars after hypen i.e 123. How can this be achieved?
SELECT id AS 'ID',
name AS 'name',
sequence AS 'num'
FROM
FirstTable A
INNER JOIN SecondTable q
ON (CONVERT(INT,RIGHT(name,3))= a.id)
INNER JOIN ThridTable t
ON(t.id = q.id)
INNER JOIN FourthTable s
ON (q.name = s.name )
WHERE A.id = @ID
AND t.name=LEFT(s.name,((CHARINDEX('-',s.name))-1))
ORDER BY 'ID','num'
One more question on this is: Is this a good way of joining tables? If I dont use this I've a very large query containing unions. Which one should be bug-free and more efficient?
Thanks,
Subha
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Jun 22, 2015
Select
left(
[Description],(charindex(';',[Description],1)-1))
from xxxx
Example of Description contains
Ankle Supports; Color=Black; Size=S
So I want the left side up to and NOT including the semi colon.
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Jun 26, 2007
I have a stored procedure that receives a list of ids, to get the emails of each of those ids. The problem that I'm having is that I'm using a char data type that is max length is 8000, but the contact lists are getting bigger and soon they might reach the variable max length. The contact list that I receive will look something like this "1234,67523,67875,789687,", I'm using "," as a separator. Right now what I do is this
@array_value = LEFT(@ContactList, @separator_position - 1)
The LEFT function doesn't work with data types text and ntext. But I'm in need of a string data type with a max length bigger than 8000. So I will apreciate if anyone knows of another function that does the same or similar and works with text data type, or any other ideas will be welcome.
Thanks,
Erick
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Feb 15, 2008
Hello,I was hoping someone could help me with this SQL statement.The column 'options.optionDescrip' is a varchar field.Some values of the 'options.optionDescrip' contain commas, some donot.We are trying to evaluate against any data in the'options.optionDescrip' column located to the left of a comma (if acomma does exist, which it may not). If no comma exists, then we tryand evaluate against the entire field, not just the part to the leftof the comma.SELECT options_optionsGroups.idProduct FROM options_optionsGroupsJOIN Options ON options_optionsGroups.idOption=options.idOptionJOIN products ON options_optionsGroups.idProduct=products.idProduct WHERE (CASE WHEN CharIndex(',',options.optionDescrip) = 0 THENoptions.optionDescrip LIKE '" & gauge & "%' ELSELeft(options.optionDescrip,CharIndex(',',options.o ptionDescrip)) LIKE'" & gauge & "%' END)Thanks for any input you can provide, I appreciate it.
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Aug 5, 2013
SQL Query. What i need is to be able to extract specific characters from data.
Eg name
1.2-KPIA1-App-00001 this is a name i require, but i also require the '1.2' and the 'KPIA1' to be displayed in new columns in the results
i.e. 1.2-KPIA1-App-00001 1.2 KPIA1
*I need this in part of a script as there is thousands of rows of data.
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Apr 16, 2015
If I have a table with 1 or more Nullable fields and I want to make sure that when an INSERT or UPDATE occurs and one or more of these fields are left to NULL either explicitly or implicitly is there I can set these to non-null values without interfering with the INSERT or UPDATE in as far as the other fields in the table?
EXAMPLE:
CREATE TABLE dbo.MYTABLE(
ID NUMERIC(18,0) IDENTITY(1,1) NOT NULL,
FirstName VARCHAR(50) NULL,
LastName VARCHAR(50) NULL,
[Code] ....
If an INSERT looks like any of the following what can I do to change the NULL being assigned to DateAdded to a real date, preferable the value of GetDate() at the time of the insert? I've heard of INSTEAD of Triggers but I'm not trying tto over rise the entire INSERT or update just the on (maybe 2) fields that are being left as null or explicitly set to null. The same would apply for any UPDATE where DateModified is not specified or explicitly set to NULL. I would want to change it so that DateModified is not null on any UPDATE.
INSERT INTO dbo.MYTABLE( FirstName, LastName, DateAdded)
VALUES('John','Smith',NULL)
INSERT INTO dbo.MYTABLE( FirstName, LastName)
VALUES('John','Smith')
INSERT INTO dbo.MYTABLE( FirstName, LastName, DateAdded)
SELECT FirstName, LastName, NULL
FROM MYOTHERTABLE
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Jan 28, 2015
How to parse a string to equal length substrings in SQL
I am getting a long concatenated string from a query (CTVALUE1) and have to use the string in where clause by parsing every 6 characters..
CREATE TABLE [dbo].[PTEMP](
[ID] [char](10) NULL,
[name] [char](10) NULL,
[CTVALUE1] [char](80) NULL
)
INSERT INTO PTEMP
VALUES('11','ABC','0000010T00010L0001000T010C0001')
select * from ptemp
After parsing I have to use these values in a where clause like this
IN('000001','0T0001','0L0001','000T01','0C0001')
Now ,the values can change I mean the string may give 5 values(6 character) today and 10 tomorrow.. So the parsing should be dynamic.
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Jul 1, 2015
Normally it is recommended to leave an empty partition on both the front and back ends of a table to avoid data movement when merging/splitting. But I have some questions based on my scenario, which is a table partitioned by a load date, so all records in a partition contain the same date, not a range of dates.
If I use range left, once I switch out the first partition it would become empty, so would there be data movement when I merge it into the next partition? The real issue though is that we will not just be removing the first partition, but "random" partitions throughout the table. Will this work?
If I use range right, when I split the last partition to create a new one it doesn't seem there would be any data movement there either. Am I missing something?
Basically I'm wondering if I should use range left or right. Most recommend using right, but then the boundary value is not the value in the partition. This could potentially result in someone deleting the wrong data if they are not careful. So is there any reason not to use left in my scenario?
I did a test of removing a partition in the middle and it worked just fine; this was using range right. I have about 6 million rows per partition. I also tested splitting at the end and it worked fine. I'll rebuild it with range left and test.
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Jul 23, 2005
HelloI am quite hopeless and of course a newbe.The situation: Sql2k / queryI would like it ot break down the following string:2004 Inventory:Ex.Plant Farm1:1st Cut:Premium:0094Whereby:Year = '2004 Inventory'plant= 'Ex.Plant Farm1'cut = '1st Cut'grade = 'Premium'lot# = '0094'It is always seperate by ':', but it can be 5 fields or 4 or 3 and sooncode to create the view:CREATE VIEW dbo.TESTASSELECT FullName, LEFT(FullName, CHARINDEX(':', FullName + ':') -1) AS year, CASE WHEN LEN(FullName) - LEN(REPLACE(FullName, ':', ''))[color=blue]> 0 THEN LTRIM(SUBSTRING(FullName,[/color]CHARINDEX(':', FullName) + 1, CHARINDEX(':', FullName + ':',CHARINDEX(':', Fullname) + 1) - CHARINDEX(':',FullName) - 1)) ELSE NULL END AS Plant, CASEWHEN LEN(FullName) - LEN(REPLACE(FullName, ':', '')) > 1 THENLTRIM(SUBSTRING(FullName,CHARINDEX(':', FullName + ':', CHARINDEX(':',FullName) + 1) + 1, CHARINDEX(':', FullName + ':', CHARINDEX(':',Fullname) + 1) - CHARINDEX(':',FullName+':') - 1)) ELSE NULL END AS [Cut]FROM dbo.ItemInventoryCan anyone help me with this? I am stuck half the way and get for cutthe rest of the string: '1st Cut:Premium:0094'Thanks!
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Oct 20, 2015
I have imported a txtfile to access and have some problem making the data appear in my wanted way. I want to shift the cells in the first row one step to the left, i.e to overwrite the zeros with the left value. Then I want to assign the first row values as field names.
Current data
Field1 Field2 Field3 Field4 Field5
0 Name Major Sector Hi
karl
per
anna
Wanted outcome
Name Major Sector Hi
karl
per
anna
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Aug 21, 2015
I'm presented with a problem where I have a database table which must be migrated via a "custom tool", moving the data into a new table which has special character requirements that didn't exist in the source database. My data resides in an SQL Server 2008R2 instance.
I envision a one-time query which will loop through selected records and replace the offending characters with --, however I'm having trouble understanding how this works.
There are roughly 2500 records which meet the criteria of "contains bad characters", frequently containing multiple separate bad chars, and the table contains roughly 100000 rows.
Special Characters are defined as #%&*:<>?/{}|~ and ..
While the field is called "Filename" it isn't always so, it is a parent/child table where foldernames are also stored.
Example data:
Tablename = Items
ItemID Filename ListID
1 Badfile<2015>.docx 15
2 Goodfile.docx 15
3 MoreBad#.docx 15
4 Dog&Cat#17.pdf 15
5 John's "Special" Folder 16
The examples I'm finding are all oriented around SELECT statements, to change the output of what I see returned, however I'd rather just fix the entire column using an UPDATE. Initial testing using REPLACE fails because I don't always have a single character as the bad thing in a string.
In a better solution, I found an example using a User Defined Function to modify the output of a select, but I cannot use that UDF in an UPDATE.
My alternative is to learn enough C# to modify the "migration tool" to do this in-transit, but I know even less about C# than I do of SQL.
I gather I want to use @@ROWCOUNT to loop through the rows but I really can't put it all together in a cohesive way.
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Jul 9, 2014
I have a column that contains the follwoing string I need to compare.
ek/df/cv/
ek/df/cv/f
All fields bfore the third / are not fixed but behind the third/ is eiter nothing or one letter I need a function to extract all the fields before the third / to compare if they are equal.
I can't do it by using the combination of Substring() and charindex() and Len()
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Aug 26, 2014
Looking at a trace table and trying to remove all the "erroneous" bits in a string e.g the declares etc so I can purely get to proc names.
An example string
declare @p2 varchar(10) set @p2=NULL exec sp_proc @Code='TF',@TypeCode=@p2 output select @p2
I've tried
select top 5000 textdata,substring(textdata,charindex('exec',textdata)+5,charindex('@',textdata)-1)
from trace_table
where TextData like '%sp_%'
and TextData like '%declare%'
And it fails dismally...
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Apr 21, 2014
I am trying to extract the IP address from a command string, the problem I am running into is there are 3 types of command strings.
SENDAUTO IP192.168.1.32L0O11 Z1 5(E=00:00,F=00:00,G=00:00,H=00:00,I=00:00,J=00:00)
SENDCREATEEXCEPTION -1,IP192.168.1.32,0,11,0,Z1,Free text-label,19,3,19,3,06:00|24:00,I|O,1,288003,1
SENDWEEKTIMES IP192.168.1.32,0,11,Z1,3,100,23:00|24:00|24:00|24:00|24:00|24:00,I|O|O|O|O|O
The IP address length can vary, and the character after the IP is either a L or ,
How can I edit the following function to look for both characters?
SUBSTRING(Command, CHARINDEX('IP', Command), CHARINDEX('L', Command) - (CHARINDEX('IP', Command)))
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Mar 8, 2015
We have a view with many left joins. The original creators of this view might have been lazy or sloppy, I don't know. I have rewritten the query to proper inner joins where required and also nested left joins.
So rather then the following exemplary fragment
select <many items>
from A
left join B on B.id_A = A.id
left join C on C.id_B = B.idthis now looks like
select <many items>
from A
left join (B
join C on C.id_B = B.id
) on B.id_A = A.id
Compilation time of the original view was 18s, of the new rewritten view 4s. The performance of execution is also better (not counting the compile of course). The results of the query are identical. There are about 30 left joins in the original view.
I can imagine that the optimizer has difficulty with all these left joins. But 14s is quite a big difference. I haven't looked into detail in the execution plans yet. I noticed that in both cases the Reason for Early Termination of Statement Optimization was Time Out.
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Jun 25, 2015
Is there a way to leave the graphical 'Include Execution Plan' on by default in SSMS? I don't know how many times I run a long-running query, say to myself, "wow, that took a while; I wonder what the execution plan looks like?" only to realize that I left it turned off. Now I have to turn it on, and wait for the query to run again. I'm guessing there's a setting in the options somewhere to always leave it on, but I'm not sure where
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Apr 3, 2015
I have written a query to search for a string in an expression by the number of it's appearance. Script is like this:
DECLARE @Expression VARCHAR(8000) = 'abcd_e_fgh',
@SearchString VARCHAR(10)= '_',
@OccuranceNumber SMALLINT = 1
DECLARE @SearchIndex INT = 0, @SearchIndexPrevious INT = 0, @Sno INT = 0
WHILE @Sno < @OccuranceNumber BEGIN
[Code] .....
Here i'm trying to search "_" in expression "abcd_e_fgh" where it is appearing for first time. it gives me 5 correctly. Now when i change the @OccurenceNumber to 2 or 3, it gives correct values 7 and -1 respectively. However now when i change it to 4, it gives me 5. So when it's trying to check for fifth appearance of "_", it's not actually giving 0 or -1 but repeating the value 5.
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Mar 10, 2015
I have a scenario where in I need to use a comma delimited string as input. And search the tables with each and every string in the comma delimited string.
Example:
DECLARE @StrInput NVARCHAR(2000) = '.NET,Java, Python'
SELECT * FROM TABLE WHERE titleName = '.NET' AND titleName='java' AND titleName = 'Python'
As shown in the example above I need to take the comma delimited string as input and search each individual string like in the select statement.
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Mar 13, 2008
Hope someone can help... I need a function to parse a string using a beginning character parameter and an ending character parameter and extract what is between them. For example.....
Here is the sample string: MFD-2fdr4.zip
CREATE FUNCTION Parse(String, '-' , '.')
.....
....
.....
END
and it shoud return 2fdr4
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Feb 6, 2006
I am attempting to create a view to bring together multiple joined tables based ona one to many relationship
Eg Table1 contains code, address
Table2 contains code, financial details
table3 contains code, financial history
This view is then going to be used to update a table with only one record for each 'code'. i.e. NewTable = code, add1, add2, city, prov, postal, financialvalue, history value1, history value2
My current stumbling block is:
One of the fields in table1 is a free format address field (address).
eg. could be (street addres, city prov, postal)
or
could be (street address 1, address2, address 3, city prov, postal)
I want to be able to assign individual components of the address to corresponding fields
if # of commas = 2 then
address1 = substring(address,1, position of first comma)
cityprov = substring(address,possition of first comma, position of second comman)
postal = substring(address rest of field)
I have a UDF which returns the number of commas but I cannot figure out how to use either a nested case statement to parse the string...
ANy ideas on how best to accompish this?
( this table is needed for some leacy software which can only handle one record with all infor....
greg
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Jul 23, 2013
I have a string like this one in my column
Mike@yahoo.com, Bill@aol.com, Dan@yahoo.com, Frank@gmail.com
In my result set I need to display all email addresses that do not have the @yahoo.com domain.
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Jul 23, 2005
Hello All,I'm trying to parse for a numeric string from a column in a table. WhatI'm looking for is a numeric string of a fixed length of 8.The column is a comments field and can contain the numeric string inany positionHere's an example of the values in the column1) Fri KX 3-21-98 5:48 P.M. arrival Cxled ATRI #27068935 3-17-982) wed.kx10/26 Netrez 95860536Now I need to parse through these lines and return only the 8 digitnumbers in itThe result set should be2706893595860536This is what I've done so farDeclare @tmp table(Comments_Txt varchar(255))Insert into @tmpselect Comments_Txt from Reservationselect * FROM @tmp where Comments_Txtlike ('%[0-9][0-9][0-9][0-9][0-9][0**9]%')But it returns the entire comments field in the result set. What I needis a way to return just those 8 digits.Any Ideas??Thanks in advance!!!
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Dec 31, 2007
I have a column with varchar(2000) that contains events with time-stamps. The data looks something like this for a record:
03:14:46: abc 03:14:47: def 03:14:59: xyz 03:15:17: zzz
I would like to parse out each time-stamp and event to a separate columns, like
col1= 03:14:46: abc
col2= 03:14:47: def
col3= 03:14:59: xyz
col4= 03:15:17: zzz
The number of events are dynamic so number of time-stamps with events can be anything from 2-30 of them.
Anyone would suggest how I can resolve this?
Thanks.
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Mar 22, 2006
I have two tables:tb_news---story_id-productlisttb_lookup---story_id-productwhen an insert command is run on tb_news, productlist field ispopulated with a value such as 'abc, def, de'when this happens, i need tb_lookup to be populated with seperaterecords for each product in productlist and the story_id from tb_news.Example:INSERT INTO tb_news (story_id, product_list)VALUES (12345, 'abc, def, de')Results:tb_news--12345, 'abc, def, de'tb_lookup--12345, 'abc'12345, 'def'12345, 'de'Ideally, I would like this to use recursion and give me tha ability tochange the delimiter at any time (might not always be a comma). someproducts may have a period in them. number of products is unknown andmight be 0 (field may be empty or NULL).
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Jul 20, 2005
Hi,I would like to parse out each value that is seperatedby a comma in a field and use that value to join to another table.What would be the easiest way to do so without having towrite a function or routine ?EX.Table AAACOL1 COL21 11, 124, 1562 11, 505, 600, 700, ...Table BBBCOL1 COL211 Desc11124 Desc124156 Desc 156
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Mar 30, 2005
Any way to parse out a text value (not varChar, using text data type) that is > than 8000 characters long? I'm looping through 1 big string passed to the DB that is pipe delimited, but I find myself needing the substring function to keep track of which segment I'm acting on (after an update, I then need to take that segment and remove it from the string)...but the subString function won't take anything larger than 8000 chars.
Say I have this string that is text data type...
'aaa|bbb|ccc|ddd|....'
..and so on, surpassing 8000 char length, how could you parse it out using the pipes as the delimter, then do an Update using that segment? Afterward, return to that string and find the next segment, then use it, and so on (in a loop). I tried using an update to set the string = replace(string, segmentJustUsed, '') to "erase" it, but replace can't take text as the datatype. Any help? Hope this isn't to confusing.
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Jan 28, 2015
How to parse a string to equal length substrings in SQL
I am getting a long concatenated string from a query (CTVALUE1) and have to use the string in where clause by parsing every 6 characters..
CREATE TABLE [dbo].[PTEMP](
[ID] [char](10) NULL,
[name] [char](10) NULL,
[CTVALUE1] [char](80) NULL
)
INSERT INTO PTEMP
VALUES('11','ABC','0000010T00010L0001000T010C0001')
select * from ptemp
after parsing I have to use these values in a where clause like this
IN('000001','0T0001','0L0001','000T01','0C0001')
Now ,the values can change I mean the string may give 5 values(6 character) today and 10 tomorrow..So the parsing should be dynamic.
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Apr 10, 2015
SP to parse a delimited string and insert the result in a table. I am using SQL Server 2008 R2. I have 2 tables - RawData & WIP. I have Robots on a manufacturing line capable of moving data to a DB. I move the raw data to RawData. On insert [RawData], I want to parse the string and move the contents to WIP as indicated below. I will run reports against the WIP Table.
Also, after the string is parsed, I'd like to change the Archive column, the _0 at the end of the raw string to 1 in the WIP table to indicate a successful parse.
Sample Strings - [RawData Table]
04102015_114830_10_013_9_8_6_99999_Test 1_1_0
04102015_115030_10_013_9_8_6_99999_Test 2_1_0
Desired Output - [WIP Table]
Date Time Plant Program Line Zone Station BadgeID Message Alarm Archive
-----------------------------------------------------------------------------------
04102015 114830 10 13 9 8 6 99999 Test 1 1 1
04102015 115030 10 13 9 8 6 99999 Test 2 1 1
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Sep 19, 2006
I know you are able to display data all uppercase or all lowercase, but how do you display it First letter capital rest lower. Like a First or Last name?
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Mar 24, 2014
I have a column that has 50 records and they are INT. I am trying to place them into a single parameter using the CHARINDEX using the IF Statement. I got an error saying convertinh from varchar to int type data.
Basically, this is what I did:
@RoomID varchar(max)
Then I declare it:
DECLARE @RoomId varchar(4)
SET @RoomID = 0
The IF part that I need to express this CHARINDEX function.
Then in Where clause I filtered it as:
WHERE r.roomid = @RoomId
Or what other way to handle INT data type and make them available for user to choose multiple value?
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Feb 26, 2015
I have tables in database where a VARCHAR(50) string is unique identifier. The database currently has an integer identity column as clustered primary key, and there's a non-clustered index on string column. The customer always queries based on a defined set of the identifier (string) column.
I wonder if someone sees an advantage of adding a persisted computed column to the table as the checksum of the string column, and then create a non-clustered index on the checksum and the string. When a customer requests data, we would compute the checksum of the customer provided identifier and add to the where clause or join, that the checksum and string must match.
Will SQL Server perform checksum check (integer) and only if it succeeds, perform the string check, in which case I see an advantage of added the checksum column? Or will SQL Server always check for both the checksum and string, in which case the additional column only adds unnecessary overhead? To note is the fact that the table(s) will have millions of rows, but the customer will request data for at at most, 100 or so identifiers.
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