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  • SQL Wildcards

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    This wildcards is used when we want to match a string pattern . And this can be do with the help of wildcards only .
    In SQL there are two types of wildcards :
    % : Percentage sign which represent 0 , 1 or more characters .
    _ : Underscore which represent exactly one character .
    Example :
    Table name : Employee_Info

      Id        Employee_name          Employee_Age         Employee _Salary     City 
      1            Mukesh                  23                  120000            Meerut
      2            Ayush                   24                  200000            Baroda
      3            Ishan                   40                  400000            Multan
      4            Pranav                  35                  123,00000         Dehradun
      5            Abhishek                26                  800000            Mussoorie
      6            Ravi                    25                  300000           Pauri-Garhwal
      7            David                   40                  8000              Baghpat
    

    Query : To select city where city start with M

    select * from Employee_Info where City like ' M% ' ;
    

    Output : All recods will come in which city is starting from letter M .

    Id        Employee_name          Employee_Age         Employee _Salary      City
    1            Mukesh                  23                  120000            Meerut
    3            Ishan                   40                  400000            Multan
    5            Abhishek                26                  800000            Mussoorie
    

    Query :

    select * from Employee_Info where City like ' %n ' ;
    

    Output : All recods will come in which city is ending with letter n .

    Id        Employee_name          Employee_Age         Employee _Salary      City
     3            Ishan                   40                  400000            Multan
     4            Pranav                  35                  123,00000         Dehradun
    

    Query :

    select * from Employee_Info where City like ' %ss% ' ;
    

    Output : All recods will come in which city containing the pattern " ss " .

    Id        Employee_name          Employee_Age         Employee _Salary      City
    5            Abhishek                26                  800000            Mussoorie
    

    Query : To select a city starting with any character followed by " tan "

    select * from Employee_Info where City like ' _tan ' ;
    

    Output : All recods will come in which city containing the pattern " tan " .

    Id        Employee_name          Employee_Age         Employee _Salary      City
    3            Ishan                   40                  400000            Multan
    

    Query : To select a city starting with " M " followed by any character followed by " er " followed by any character followed by " ut "

    select * from Employee_Info where City like 'M _er_ut ' ;
    

    *Output : *

    Id        Employee_name          Employee_Age         Employee _Salary      City
     1            Mukesh                  23                  120000            Meerut
    

    Query : To select a city starting with " M " , " B "

    select * from Employee_Info where City like ' [MB]% ' ;
    

    *Output : *

    Id        Employee_name          Employee_Age         Employee _Salary      City
    1            Mukesh                  23                  120000            Meerut
    3            Ishan                   40                  400000            Multan
    5            Abhishek                26                  800000            Mussoorie
    7            David                   40                  8000              Baghpat
    

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