How To Pattern Matching For Zero Or Single Character In SQL Select?

Apr 22, 2005

The LIKE keyword in SELECT WHERE can use wildcard



%
Any string of zero or more characters.

_
Any single character.

but how to Pattern Matching for "zero or single character"?

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SQL Pattern Matching

Mar 20, 2008

Hi everyone. I'm developing a web search engine using asp and SQL Server 2000. I need to return records that matches with a string entered by users. In example, suppose my database to have this structure and it's filled like this:

ID NAME KEYWORDS
--- ------- -----------
AA025 NAME1 attached, atic, common, business, hotels
AA026 NAME2 headache, medicin, aspirins, heat, health
AA027 NAME3 at, services, music, electronics

suppose that user enters 'at'. By now, i'm using this pattern '%<input_text>%'. So in this example, pattern would be '%at%'. As i remarked in the fields above, the three fields matches, and that's not what i'm looking for. I want that the result of that query be just the last field, with 'AA027' ID.
Thanks in advance guys.
Cheers.

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Unicode And Pattern Matching

Mar 30, 2015

I've been trying to find and filter out data that can cause FOR XML to fail with the error:FOR XML could not serialize the data for node ?? because it contains a character (0x0006) which is not allowed in XML.I thought it would be simple, just identify the rows that don't match the XML spec URL...

However, the following doesn't work.
select fieldname
from tablename
where fieldname
like N'%[^'+nchar(0x9)+nchar(0xA)+nchar(0xD)+nchar(0x20)+N'-'+nchar(0xD7FF)+N']%'

Not only does this fail to find the offending rows, when I checked by inverted it by taking out the "^" it still returns no rows.When I reduced 0xD7FF down to 0xFF it returns data, but I cannot add the other range back in without all rows not matching.I've experimented with values and found 0x02E9 was the highest I could go without all values vanishing. Even then, numbers lower than that caused a large variation in the number of rows returned.My Field is NVarchar(100) in SQL_Latin1_General_CP1_CI_AS.

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[Fwd: Reverse Pattern Matching]

Jul 23, 2005

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Like Pattern Matching - Problem With Param

Mar 19, 2008

I've decalred this stored procedure with a simple where and like statement. The problem is I don't see any result.
Here is my code


create procedure sp_Select_ProfileNames
@NameSearch varchar(50)
as
select ProfileFirstName +' '+ ProfileLastName as ProfileName
from Profiles
where ProfileLastName like '%@NameSearch%';


When i change this line:
where ProfileLastName like '%@NameSearch%';
to
where ProfileLastName like '%Bil%';

I see names starting with Bil, but when i enter Bil as param, I don't get anything.

What's wrong here ?

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Pattern Matching With Multiple Values

Aug 25, 2006

I want to check for multiple patterns in a particular column.
For one pattern I can write e.g.
SELECT * FROM <TablName> WHERE ColumnName LIKE '%abcd%'.


My requirment is to select all rows for which column value matches with many patterns.I will fetch the patterns in a subquery
e.g. (SELECT '%'+name+'%' FROM <TableName>)

Any thoughts?

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Pattern Matching Or Find And Replace In SQL Query

Oct 29, 2007

I have a table called MessageBoard.  It has a column called Messages.
A user can type text including any html tags through a text area ans when he saves it by clicking a button, the content typed by the user is saved in the MessageBoard Table (in the Messages) column.  So once saved, the html tags are kept intact.  If I have to find and replace certain html tags, what kind of SQL Query I have to write?
For example I want to find all the <pre> </pre> tags and replace it with <p> </p> tags.  How do I do this?

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Pattern Matching And Full-text Search

Aug 30, 2007

I'm not quite sure that this is possible but, I figured that I would check with you experts out there before trying a new approach. I've done quite a bit of research and have not seen anyone quite figure this out yet.

We have a SQL Server 2005 application that stores and indexes documents to the database as an image data type. I'm able to do full-text queries against the documents without any trouble. I begin to run into problems when trying to pattern match social security numbers and drivers licenses stored in a full-text index. I have a user defined function that I call which runs my regular expression that checks for hits of a ssn or license number in the index. I have no problem getting hits when the data sits in a column.

I do need to mention that I have no trouble when searching for a ssn with a fixed value and where I know the ssn (ex: 123-45-6789). I am actually trying to find the existence of the pattern of ###-##-#### (ex: ^d{3}-d{2}-d{4}$) anywhere in the index.
Any help would be very much appreciated.

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SQL Server 2012 :: Case Sensitive Pattern Matching?

Dec 20, 2013

I have a set of data where a column contains titles which have been formatted as follows:

"FirstWordSecondWordThirdWord...." etc.

That is, all the words have been concatenated but can be visually separated by their capital first letters.

For reporting purposes, I need to break this column into the separate words so that it looks like:

"First Word Second Word Third Word...." etc.

how this can be achieved?

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SQL Server 2012 :: Pattern Matching And Data Conversion

Feb 20, 2014

I have a table ("MyData") with string columns that have nvarchar data that looks like this:

ColA
--------
42/90
78/109

I plan to do a mathematical grouping on the numerator (eg: 0-10,11-20,21-30, etc... ), So I need to grab the numerator and turn it into an int. For reasons I can't get into, I have to do this in pure T-SQL.

So my question: How would I write a select statement that regex pattern matches "^([0-9]+)/" on ColA and returns integers instead of text?

E.g. THis Query:

SELECT [magic t-sql syntax] as Converted_ColA from MyData

should return this set of int values:

42
78

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SQL Server 2008 :: Pattern Matching And Extract Text

Sep 17, 2015

I have two tables in SQL Server--an expression table and a translate table.

DECLARE @EXPRTABLE TABLE
(
expression varchar(100)
)

INSERT INTO @EXPRTABLE
SELECT 'CALL("-","","TEST")'

[Code] ....

I am trying to (for lack of a better way to explain it), overlay the pattern onto the expression and extract the text where the "#" symbols are.

So,

CALL("-","","TEST") using pattern CALL("#","#","#") would return -,,TEST
SUB(2,67,TEST,4,) using pattern SUB(2,#,TEST,4,) would return 67

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Is Pattern Matching Possible In Derived Columns Expression Syntax?

Feb 8, 2008



Chaps,

apologies for the drip-drip approach......

Is it possible to do pattern matching against a string using FINDSTRING or similar in a derived column expression without recourse to including 3rd party regexp style plugins?

I want to seach for a reference in a string which will have the format ANNNNNAAA ie. an alpha with a certain value followed by 5 digits followed by three alphas with specific values.

eg Z00001YYY or X00022HHH

thanks for your assistance,

regards,

Chris

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SQL Server 2012 :: Pattern Matching (positive Across Records - Negative Within A Field)

Jan 6, 2015

I am doing some analysis on our customer base and their payment profiles. I have generated two profile strings, one for whether the balance of an account has gone up or down and one for the size of the balance in relation to the normal invoice amount for the customer. So (for example) the balance movement string will look like this:

UUUDUUUDUUUD-D00 Where U = Up, D = Down, - = no change and 0 = no change and no balance

I want to analyse these strings in two ways. The first is that I want to find customers with a similar pattern: in the example below the first and last patterns are the same, just one out of sync but should be considered the same

Movement Multiple CountRecords
UUUDUUUDUUUD1230123012301175
------------0000000000001163
UDUUUDUUUDUU3012301230121082

The second type of analysis is to find customers whose pattern has changed: in the examples above the patterns are repeated and therefore 'normal' in the records below the patterns have changed in that the first part does not match the second part.

Movement Multiple CountRecords
UUDUUUDUUUUU-----------07
UDUUUDUUUUUU------------7

good way to approach this without either a cursor or a hidden REBAR. The challenge as I see it is that I have to interrogate every string to find out if there is a repeating pattern and if so where it starts and how long it is (heuristic because some strings will start with a repeating pattern and then the pattern may change or deteriorate) and then compare the string for N groups of repeating characters to see if and when it changes and I can't think of an efficient method to do this in SQL because it is not a set based operation.

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T-SQL (SS2K8) :: Replace Multiple Occurrences Of Same Character With Single Character

Aug 6, 2015

I have the following scenario, The contents of main file are like :

ServerCentral|||||forum|||||||||||||||is||||||the||best
so||||||be|||||on||||||||||||||||||||||||||||||||||||||||||||it

And I need the output in the following form:

ServerCentral=forum=is=the=best
so=be=on=it

The logic being that multiple and consecutive occurrences of the special character, here - pipe , should be replaced by a single special character.

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Reporting Services :: Exporting SSRS Reports To PDF With Background Pattern - Pattern Not Visible?

May 8, 2015

I tried creating one simple bar chart report in SSRS, with background fill with pattern "UpwardDiagonal", the stripes on the column when viewed insider report viewer control is quite prominently visible, whereas when exporting the same report to PDF the lines are very thin and dense and hence makes it very difficult to differentiate between one column with pattern inside and one without. I have even tried various other pattern like "LightUpwardDiagonal" and "WideUpwardDiagonal" but all have same result when exported to PDF.why?

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Pattern Matching - Searching For Numeric Or Alpha Or Alpha-Numeric Characters In A String

Aug 18, 2006

Hi,

I was trying to find numeric characters in a field of nvarchar. I looked this up in HELP.





Wildcard
Meaning



%


Any string of zero or more characters.



_


Any single character.



[ ]


Any single character within the specified range (for example, [a-f]) or set (for example, [abcdef]).






Any single character not within the specified range (for example, [^a - f]) or set (for example, [^abcdef]).

Nowhere in the examples below it in Help was it explicitly detailed that a user could do this.

In MS Access the # can be substituted for any numeric character such that I could do a WHERE clause:

WHERE
Gift_Date NOT LIKE "####*"

After looking at the above for the [ ] wildcard, it became clear that I could subsitute [0-9] for #:

WHERE
Gift_Date NOT LIKE '[0-9][0-9][0-9][0-9]%'

using single quotes and the % wildcard instead of Access' double quotes and * wildcard.

Just putting this out there for anybody else that is new to SQL, like me.

Regards,

Patrick Briggs,
Pasadena, CA






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Select Part Of Character String Based On A Character

Apr 15, 2004

I have data in a column that starts with 1-4 characters followed by a dash then followed by an number of characters (ex: EU-Surgery).

How do I select everything to the right of the dash when the number of characters to the left of the dash varies?

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T-SQL (SS2K8) :: Return Single Row For Matching Columns Based On 3rd Column

Sep 3, 2014

I have data:

Ticket User Priority
A ME 1
B ME 1
C ME 2
C ME 3
D ME 2
E YOU 2
F YOU 1
G ME 3
H YOU 2
H YOU 3
I ME 1

Essentially if Ticket and User are the same I just want the min priority returned.

SO:
Ticket User Priority
A ME 1
B ME 1
C ME 2
D ME 2
E YOU 2
F YOU 1
G ME 3
H YOU 2
I ME 1

I've tried partition and rank but can't get it to return the right output.

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Merge Two Tables Into A Single Table Based On The Matching Timestamp

Aug 2, 2013

Two tables:

table #1 = timestamp, servername1(never changes), value(int)
Table #2 = timestamp, servername2(never changes), value(int)

What I need to do is merge the two tables into a single table based on the matching timestamp:

timestamp, servername1, servername2 as headers then values under
"1/1/1-1:10:1" , "10" , "10" - as an example
"1/1/1-1:20:1" , "20" , "21" - as an example
"1/1/1-1:30:1" , "1" , "5" - as an example

Powershell or MSSQL 2008 queries work.

I have a powershell script atm that can create the table and then throw it back into the database but its very slow because of the amount of records.

The table is for some performance stat collection app.

Table #1 records a timestamp, the servername (which is the same over and over in the table) and the value of the performance object.
Table #2 is the same collection but for a different server.

The layout in the database is terrible but this is what I get to work with.

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Oct 27, 2014

I have a huge database (20 columns and 56000 lines) and I need a query that can return each single unique character from all this database.

For example if character "a" appears at least one time in this database I need this query to show it to me.

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Sep 22, 2006

Hi all

How to enter single quote character in a sting column for eg: Channel's

Thanks

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Jan 11, 2008

I have the following script below which checks my employee table for duplicate employees based on surname, forename, dateofbirth and NINumber and inserts the duplicates into a temp table i.e. @temptable. I now want to change how NINumber is matched. For example i want to now say:

match on the 1st 8 characters of NI Number where the NI Number does not start with TN.
For NI Numbers that start with TN match on all 9 chars.

Can anyone help with the syntax?

code is as follows:

DECLARE @temptable table(f_id int primary key identity(1,1), NhssNumber int, Surname varchar(18), Forename varchar(11), DateOfBirth datetime, NINumber varchar(9), MaxNhssNumber int)
INSERT INTO @temptable
SELECT
a.NhssNumber,
CAST(a.Surname as varchar(18)) as Surname,
CAST(a.Forename as varchar(11)) as Forename,
CONVERT(char(8),a.DateOfBirth,112) as DateOfBirth,
CAST(a.NINumber as varchar(9)) as NINumber, NULL
FROM dbo.t_Employee a
JOIN
(SELECT Surname, Forename,DateOfBirth,NINumber
FROM dbo.t_Employee
GROUP BY Surname, Forename,DateOfBirth,NiNumber
HAVING COUNT(*) > 1) b
ON a.Surname = b.Surname
AND a.Forename = b.Forename
AND a.DateOfBirth = b.DateOfBirth
AND a.NiNumber = b.NiNumber
ORDER BY a.Surname, a.Forename,a.DateOfBirth,a.NiNumber

select * from @temptable

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Jun 21, 2012

I am trying to replace all special characters in a column with one special character.

Example:

Table: dbo.Employee
Column: Name
Name
-------
edwardneuman!"<]
mikemoreno)'>$:
JeffJensen"?>"

I am trying to get the namepart to the left of ANY special character. To achieve this, I am thinking of replacing all the special characters with a single special character so that I can find the first occurrence of that special character and grab left of the special character (SUBSTRING/CHARINDEX). This way I don't need to loop through all the special characters.

I am expecting the following results:

Name
-------
edwardneuman<<<<
mikemoreno<<<<<
JeffJensen<<<<

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Jan 20, 2014

I have a problem where I want to write a function to remove recurring characters from a string and replace them with a single same character.

For instance I have the string '12333345566689' and the result should be '12345689'. In Oracle I could do this with "regexp_replace('12333345566689', '(.)1+', '1')", but in T-SQL the only solution I could think of is something like this:

DECLARE @code NVARCHAR(255)
SET @code = '12333345566689';
SET @code = REPLACE(REPLACE(REPLACE(@Code, '1', '~1'), '1~', ''), '~1', '1');

and repeat this for 2 - 9. But I'm sure there is a more elegant version for this in SQL Server 2012.

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Apr 14, 2015

Suppose I have string like

DECLARE @strname varchar(50) = 'i_ncm_ai04';
DECLARE @SAMPLE_DATA TABLE
(
SD_ID INT NOT NULL
,SD_TEXT VARCHAR(10) NOT NULL

[Code] ......

how can I search a ID's which are exist in my string.

result should be,

3 i_ncm
8 i_ncm_a

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Jan 12, 2006

Hello All,I've got a DATETIME field, and it includes hour:minutes:second data.  I want to do selects where I can simply match on the month, day and year.  For instance, something like this:SELECT * FROM QuizAttempts WHERE DateTimeTaken = '1/12/2006'And have it match anything that was taken that day, regardless of *when* it was taken.  Any suggestions?Thanks!  -Josh

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Jul 21, 2015

Our clients want to be able to do full text search with a single letter. (Is the name Newton, Nathan, Nick?, Is the ID N1, N2...). Doing a single character full text search on a table work 25 out of 26 times. The letter that doesn't work is 'n'. the WHERE clause CONTAINS(full_text_field, ' "n*" ') returns all rows, even rows that have no 'n' in them anywhere. Adding a second letter after the "n" works as expected.

Here is an example

create table TestFullTextSearch (
Id int not null,
AllText nvarchar(400)
)
create unique index test_tfts on TestFullTextSearch(Id);
create fulltext catalog ftcat_tfts;

[Code] ....

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Dec 15, 2014

How to select specific character when you have a different length of characters. For example I have a columm where I have character ":". How to select only ":"?

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Sep 21, 2006

Hi Folks

If I wrote this in QA what does it mean?

Declare @X INT
Set @X = 2

Select (@X & 8)

What & do in this select statment

Thank you

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Jan 15, 2007

first of all... hello, forum! im a total newbie

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how do i get "lastname~firstname" from employee table to display in "lastname,firstname" format?

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Aug 15, 2007

Anyone who knows a smarter way to select a special part of a text string.
A have done like this now but mabye the textstring changes. I know that the GO02 in the future will expand.
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But the underscore _ sign is like a seperator and will always be there to separate the words.

I need the 20070807_2010 and fomat to 2007-08-07 20:10

SELECT @state = STATE,
@thetime = CONVERT(char(20),STATE_TIME,20),
@id = ID,
@textstrr = TEXTSTRRWHERE SUBSTRING(FILENAME, 21,4)+ '-'+ SUBSTRING(FILENAME, 25,2)+'-'+SUBSTRING(FILENAME, 27,2)+' '+ SUBSTRING(FILENAME, 30,2)+ ':'+ SUBSTRING(FILENAME, 32,2)+':00' between @starttime and @theEndTime

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Feb 4, 2007

Hi All

I have a strange request that might not be possible based on the laws of relational databases but I thought I'd give it a try.

I have three tables which for simplicity I will call A, B and C. Table A contains my master records, Table B contains user details and the final table contains some extra data

In my initial search when joining A and B, I return 100 records. I then need to search in table C for these 100 records based on a criteria. the expected result should return all 100 rows for the ones that match and also the ones that do not match. The problem is that in Table C, not all the 100 IDs exist, so there will not be a corresponding record. Unfortunately, our users still want to see all 100 records in the output. Is this possible

As always any help or direction would be appreciated.

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Apr 17, 2014

i am working on a small project, that I have found that someone is storing a float as a varchar(). But there are also some actual words in the same column.

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Some of the data is:

1.5008e+015
1.54453e+015
1.51922e+015
1.51922e+015
1.52243e+015

but there is a mix of alphabetical characters in there as well.

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1.53122e+015
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ABCNP
FMCPNG
1.62073e+015
1.6127e+015

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