SQL SERVER – How to Escape Single Quotes – Fix: Error: 105 Unclosed quotation mark after the character string

Jr. A developer asked me the other day how to escape single quote? I find this question very interesting.

SQL SERVER - How to Escape Single Quotes - Fix: Error: 105 Unclosed quotation mark after the character string singledouble

User can escape single quote using two single quotes (NOT double quote).

Following T-SQL Script will give error

USE AdventureWorks
FROM Person.Address
WHERE City = ‘Villeneuve-d’Ascq’


Error: 105 Unclosed quotation mark after the character string ‘

To fix the error mentioned above, escape single quotes with two single quotes as displayed in following example.

USE AdventureWorks
FROM Person.Address
WHERE City = 'Villeneuve-d''Ascq'

Well, it is a pretty easy way to escape single quotes. Here are a few interesting quotes about single and double quotes. In fiction, at least with American English (AmE), there’s really no use for single quotation marks other than as a quote within another quote. In general, quotation marks are used to mark direct speech in a text, to indicate irony, or to highlight the title of works that are part of a larger whole — like chapters of a novel, an article in a magazine or newspaper.

Let me know what you think of this blog post by leaving your opinion in the comment sections.

Reference: Pinal Dave (https://blog.sqlauthority.com)

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74 Comments. Leave new

  • I have a table fields which contains characters like ‘s and because of SQL limitation I am getting errors in application. Such characters sequence stored because of laps during conversion time. Can any one help me to replace escape ‘ characters with other one…



  • Dear Sir,

    I am trying to execute a batch statement which includes ‘Database, Tables, Stored Procedures Creation etc.’

    It is a very big sql string. Here it would be difficult to find every single quote and replace it with two single quotes…

    Isn’t there any option at the start of the string only ( like ‘@’ in C#) so that I can keep my whole string as it is. It will save a lot of time.

    Please help me to resole this.

    Thank You.


  • Dear Sir,

    If I have a batch statement containing “Database, Tables, Stored Procedures” creation, then there’s gonna be thousands of lines containing single quote. It would be difficult to find each one and replacing with two singles.

    Isn’t there a way like what @ operator doses in C# ?

    Please help me to resolve this issue.

    Thank You


  • Hmm. Doubling up single quotes stops me getting the “unclosed quotation” error, however it’s not pattern matching the data in the way I would hope. Searching on “Connor” brings back many results (which are displayed as “O’Connor”) whereas searching on “O’Connor” brings back none.

    this is where my php code adds the relevant line to the query…
    $querystr .= “AND UPPER(Authors) COLLATE SQL_Latin1_General_Cp1_CI_AS LIKE ‘%”.strtoupper(ereg_replace(“‘”,”””,$Authors)).”%’ “;
    .. which once built, is then run against the mssql DB.
    Any & all ideas welcome…!

    • OK, I’ve found a fairly inelegant solution… there was an escaping “\” in there, so my search string was “O\”Connor”. Have now changed the code to:
      $querystr .= “AND UPPER(Authors) COLLATE SQL_Latin1_General_Cp1_CI_AS LIKE ‘%”.strtoupper(ereg_replace(“‘”,”_”,stripslashes($Authors))).”%’ “;

      …and this appears to work – the underscore allowing for the apostrophe, and the % working for…everything else.

      Thanks for providing me a forum to think through this in public ;-)

  • how can we change “,”” into single ‘

  • hi guys plz help me in making a function in T-sql through which i can change the string like
    Double Quto(“) into single quto(‘) by using loop…
    like Microsoft”s into Microsoft’s
    Microsoft”” into Microsoft’s
    and Microsoft’s shuld remain Microsoft’s

  • Hello Sir i am using a query in which i have generated a string from Comma separate and when i use it in “select id from tblName where id in(@str) ” here id is integer and i have @str as nvarchar its not giving result as it should.. please help me … Thanks in advance…….

  • i need sql insert stament without stored procedure to insert dynamic values from textbox which contains of (Apostrophe,Double quotes)! Simple example plz

  • can any one tell me ,what to do when we are getting data from web server with @ ‘ @ ,i mean single quote.i have to load that data in my sql database.please tell the solution.
    Ajay Kohar

  • use four ‘ (””)

  • In order to be in compliance with strict security requirements as a DBA on a
    military installation, I am required to run some queries against every
    database on ever server – too many reasons and requirements to explain here.
    I taken the auditors queries in the requirement pdf and modified code to get
    the information in one procedure. It works PERFECT on all servers except the
    one that has Sharepoint DB’s. Whoever initially set up Sharepoint evidently
    used the wizard because the naming convention has a GUID which includes
    three dashes:

    When my code runs through SELECT name FROM [master].sys.databases, it grabs
    everything up to the 1st dash, then give me an error:
    Msg 911, Level 16, State 1, Line 6 Could not locate entry in sysdatabases
    for database ‘SharePoint_AdminContent_2e102d4f’. No entry found with that
    name. Make sure that the name is entered correctly.

    I have tried everything from concantenating with brackets and excluding that
    DB in the query by various means, but nothing works. I know there is a
    process to change the Sharepoint DB name, but I do not have authority to do
    this, so I need to find a work-around in code in order to not have to run
    the canned queries on around 100 DB’s on this server.

    Here is the code:

    create table #hd_rc ( ServerName NVARCHAR(100), DBName VARCHAR(100),
    [Schema] VARCHAR(100),type_desc VARCHAR(100), [User] VARCHAR(100) ) DECLARE
    @command varchar(1000)

    SELECT @command = ‘IF EXISTS (
    SELECT name FROM [master].sys.databases WHERE state = 0 and name = ”?” )
    SELECT distinct @@servername as ServerName, db_name() as DBName, s.name AS
    [Schema], u.type_desc, l.name AS [User] FROM sys.all_objects o JOIN
    sys.schemas s ON o.schema_id = s.schema_id JOIN sys.database_principals u ON
    s.principal_id = u.principal_id JOIN master.sys.sql_logins l ON u.sid =
    l.sid WHERE o.is_ms_shipped = 0 AND l.is_disabled = 0;
    END’ EXEC sp_MSforeachdb @command

    select * from #hd_rc drop table #hd_rc

    Thank you in advance for any assistance!! Mdh

  • are there other characters like the single quote that we should think about escaping?

  • i made a website on localhost and i want to secure my website. whenever i am entering a single quote its showing an error what should i do ?

  • You are a legend, this is an awesome fix, I love how google drives me onto your site every time I have an sql server question. Where do I donate?

  • William Matthews
    February 3, 2016 4:24 pm

    This fix has been a major revelation for me. I have a query that has some issues with inconsistent addresses with abbreviations and quotes just haphazardly thrown in. At first I was getting numerous errors due to placement of the double single quotes but your fix is just awesome. Ten stars!!!! **********

  • thanks, it worked for me

  • Did you get any solution for this, as I am facing same issue while creating a procedure using sp_MSforeachdb, where the procedure is using BCP. Just imagine how many combinations are there.

  • Dear Sir,

    Please suggest how could I skip the quotes here, where there is different types of quotes at every level?

    SELECT @command = ‘IF ”?” NOT IN(”master”, ”model”, ”msdb”, ”tempdb”) BEGIN USE ?
    SET @FQDN = CONCAT_WS(‘.’, @dbName, @schemaName, @tableName);
    SET @sqlColumn = CONCAT(‘SELECT ‘, @columnName ,’ FROM ‘, @FQDN ,’ ‘;
    SET @folderName = CONCAT(‘C:Temp’,@dbName,”,@tableName);
    SET @fileName = CONCAT(@columnName,’.csv’);

    SELECT @sqlFileOut = ‘BCP ” ‘+ @sqlColumn +’ ” queryout ” ‘+ @folderName + ” + @fileName +’ ” -c -t, -T -S” ‘+ @@servername +’ ” ‘;

    EXEC master.sys.xp_cmdshell @sqlFileOut;

    END”) END’

    EXEC sp_MSforeachdb @command


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