SOQL Query Where Id “In” Versus “Equals”(=)












3















I just stumbled upon a soql query where somebody did the following



List<String> names = new List<String>{'John', 'Moe', 'Jeanette', 'Tony'};



List<Client__c> clients = [

    SELECT Id

    FROM Client__c

    WHERE First_Name__c = :names

];


I am not familiar with the usage of the equal sign(=) to check against a list/set as opposed to WHERE First_Name__c IN :names.



I am having a hard time finding the difference as it seems like using = works similarly but does it work the same way? Are there any dangers to using it?






apex soql where clause







share|improve this question


















  • 2





    Note: this special behavior is not available in any API; it only works in Apex code.

    – sfdcfox
    7 hours ago











  • @sfdcfox Can you provide an example if you don't mind? What API would this not work in?

    – Arthlete
    6 hours ago






  • 1





    Any of them. For example, in the Apex Data Loader, you cannot say select name from lead where name = ('john doe','jane doe'). This is one of the few magic behaviors of SOQL in Apex.

    – sfdcfox
    6 hours ago
















3















I just stumbled upon a soql query where somebody did the following



List<String> names = new List<String>{'John', 'Moe', 'Jeanette', 'Tony'};



List<Client__c> clients = [

    SELECT Id

    FROM Client__c

    WHERE First_Name__c = :names

];


I am not familiar with the usage of the equal sign(=) to check against a list/set as opposed to WHERE First_Name__c IN :names.



I am having a hard time finding the difference as it seems like using = works similarly but does it work the same way? Are there any dangers to using it?






apex soql where clause







share|improve this question


















  • 2





    Note: this special behavior is not available in any API; it only works in Apex code.

    – sfdcfox
    7 hours ago











  • @sfdcfox Can you provide an example if you don't mind? What API would this not work in?

    – Arthlete
    6 hours ago






  • 1





    Any of them. For example, in the Apex Data Loader, you cannot say select name from lead where name = ('john doe','jane doe'). This is one of the few magic behaviors of SOQL in Apex.

    – sfdcfox
    6 hours ago














3












3








3


1






I just stumbled upon a soql query where somebody did the following



List<String> names = new List<String>{'John', 'Moe', 'Jeanette', 'Tony'};



List<Client__c> clients = [

    SELECT Id

    FROM Client__c

    WHERE First_Name__c = :names

];


I am not familiar with the usage of the equal sign(=) to check against a list/set as opposed to WHERE First_Name__c IN :names.



I am having a hard time finding the difference as it seems like using = works similarly but does it work the same way? Are there any dangers to using it?






apex soql where clause







share|improve this question














I just stumbled upon a soql query where somebody did the following



List<String> names = new List<String>{'John', 'Moe', 'Jeanette', 'Tony'};



List<Client__c> clients = [

    SELECT Id

    FROM Client__c

    WHERE First_Name__c = :names

];


I am not familiar with the usage of the equal sign(=) to check against a list/set as opposed to WHERE First_Name__c IN :names.



I am having a hard time finding the difference as it seems like using = works similarly but does it work the same way? Are there any dangers to using it?






apex soql where clause




apex soql where clause






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 8 hours ago









ArthleteArthlete

847515




847515








  • 2





    Note: this special behavior is not available in any API; it only works in Apex code.

    – sfdcfox
    7 hours ago











  • @sfdcfox Can you provide an example if you don't mind? What API would this not work in?

    – Arthlete
    6 hours ago






  • 1





    Any of them. For example, in the Apex Data Loader, you cannot say select name from lead where name = ('john doe','jane doe'). This is one of the few magic behaviors of SOQL in Apex.

    – sfdcfox
    6 hours ago














  • 2





    Note: this special behavior is not available in any API; it only works in Apex code.

    – sfdcfox
    7 hours ago











  • @sfdcfox Can you provide an example if you don't mind? What API would this not work in?

    – Arthlete
    6 hours ago






  • 1





    Any of them. For example, in the Apex Data Loader, you cannot say select name from lead where name = ('john doe','jane doe'). This is one of the few magic behaviors of SOQL in Apex.

    – sfdcfox
    6 hours ago








2




2





Note: this special behavior is not available in any API; it only works in Apex code.

– sfdcfox
7 hours ago





Note: this special behavior is not available in any API; it only works in Apex code.

– sfdcfox
7 hours ago













@sfdcfox Can you provide an example if you don't mind? What API would this not work in?

– Arthlete
6 hours ago





@sfdcfox Can you provide an example if you don't mind? What API would this not work in?

– Arthlete
6 hours ago




1




1





Any of them. For example, in the Apex Data Loader, you cannot say select name from lead where name = ('john doe','jane doe'). This is one of the few magic behaviors of SOQL in Apex.

– sfdcfox
6 hours ago





Any of them. For example, in the Apex Data Loader, you cannot say select name from lead where name = ('john doe','jane doe'). This is one of the few magic behaviors of SOQL in Apex.

– sfdcfox
6 hours ago










2 Answers
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I've not seen a difference functionally; I strongly prefer using IN as that is what would be required in SQL, and it it more accurate, and more descriptive.



First_Name__c is not logically equal to a list.



Using the syntax First_Name___c IN :names makes it clear that names is a collection, and that the developer knows that it's a collection






share|improve this answer








New contributor




Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




























    3














    They are functionally equivalent. I agree with Mike that IN is more syntactically clear, but either one works.



    See also: How to find out if an Object is a collection or single value?



    This equivalence can be quite useful when building dynamic SOQL.






    share|improve this answer























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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      5














      I've not seen a difference functionally; I strongly prefer using IN as that is what would be required in SQL, and it it more accurate, and more descriptive.



      First_Name__c is not logically equal to a list.



      Using the syntax First_Name___c IN :names makes it clear that names is a collection, and that the developer knows that it's a collection






      share|improve this answer








      New contributor




      Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.

























        5














        I've not seen a difference functionally; I strongly prefer using IN as that is what would be required in SQL, and it it more accurate, and more descriptive.



        First_Name__c is not logically equal to a list.



        Using the syntax First_Name___c IN :names makes it clear that names is a collection, and that the developer knows that it's a collection






        share|improve this answer








        New contributor




        Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.























          5












          5








          5







          I've not seen a difference functionally; I strongly prefer using IN as that is what would be required in SQL, and it it more accurate, and more descriptive.



          First_Name__c is not logically equal to a list.



          Using the syntax First_Name___c IN :names makes it clear that names is a collection, and that the developer knows that it's a collection






          share|improve this answer








          New contributor




          Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.










          I've not seen a difference functionally; I strongly prefer using IN as that is what would be required in SQL, and it it more accurate, and more descriptive.



          First_Name__c is not logically equal to a list.



          Using the syntax First_Name___c IN :names makes it clear that names is a collection, and that the developer knows that it's a collection







          share|improve this answer








          New contributor




          Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          share|improve this answer



          share|improve this answer






          New contributor




          Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          answered 7 hours ago









          Mike LockettMike Lockett

          1113




          1113




          New contributor




          Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.





          New contributor





          Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.






          Mike Lockett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.

























              3














              They are functionally equivalent. I agree with Mike that IN is more syntactically clear, but either one works.



              See also: How to find out if an Object is a collection or single value?



              This equivalence can be quite useful when building dynamic SOQL.






              share|improve this answer




























                3














                They are functionally equivalent. I agree with Mike that IN is more syntactically clear, but either one works.



                See also: How to find out if an Object is a collection or single value?



                This equivalence can be quite useful when building dynamic SOQL.






                share|improve this answer


























                  3












                  3








                  3







                  They are functionally equivalent. I agree with Mike that IN is more syntactically clear, but either one works.



                  See also: How to find out if an Object is a collection or single value?



                  This equivalence can be quite useful when building dynamic SOQL.






                  share|improve this answer













                  They are functionally equivalent. I agree with Mike that IN is more syntactically clear, but either one works.



                  See also: How to find out if an Object is a collection or single value?



                  This equivalence can be quite useful when building dynamic SOQL.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 7 hours ago









                  Adrian Larson♦Adrian Larson

                  106k19113241




                  106k19113241






























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