How to add indexing for a search based on multiple columns in MySQL table












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I am adding a search button with the suggestions displayed while we type on it similar to google and I need to search multiple columns in a single table. How to add indexing for that columns?



I have two tables in my application named as Employer and Employee. I want to add a search box so that the Employer can search employees of only his organisation based on their name or email or phone number. When the employers types on the search box I need to show the suggestions below. For Ex. when employer types Jo on the text box, I will show suggestions as



1. Jon, jon@gmail.com, 12345



2. Bobby, jon-bobby@gmail.com, 9876



3. .....



The Employee table has columns id, name, email, phone, employer_id fk references Employer table.



What I think the query might be is



SELECT * 
FROM Employee
where employer_id = 1
and LOWER(name) like '%jo%'
or LOWER(email) like '%jo%'
or LOWER(phone) like '%jo%'


I want to know whether this is a valid query to use. I am not sure about its performance. Also I am not sure how to add index to this table in this particular use case.



I would really appreciate your valuable suggestions.









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    0















    I am adding a search button with the suggestions displayed while we type on it similar to google and I need to search multiple columns in a single table. How to add indexing for that columns?



    I have two tables in my application named as Employer and Employee. I want to add a search box so that the Employer can search employees of only his organisation based on their name or email or phone number. When the employers types on the search box I need to show the suggestions below. For Ex. when employer types Jo on the text box, I will show suggestions as



    1. Jon, jon@gmail.com, 12345



    2. Bobby, jon-bobby@gmail.com, 9876



    3. .....



    The Employee table has columns id, name, email, phone, employer_id fk references Employer table.



    What I think the query might be is



    SELECT * 
    FROM Employee
    where employer_id = 1
    and LOWER(name) like '%jo%'
    or LOWER(email) like '%jo%'
    or LOWER(phone) like '%jo%'


    I want to know whether this is a valid query to use. I am not sure about its performance. Also I am not sure how to add index to this table in this particular use case.



    I would really appreciate your valuable suggestions.









    share







    New contributor




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























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      0








      I am adding a search button with the suggestions displayed while we type on it similar to google and I need to search multiple columns in a single table. How to add indexing for that columns?



      I have two tables in my application named as Employer and Employee. I want to add a search box so that the Employer can search employees of only his organisation based on their name or email or phone number. When the employers types on the search box I need to show the suggestions below. For Ex. when employer types Jo on the text box, I will show suggestions as



      1. Jon, jon@gmail.com, 12345



      2. Bobby, jon-bobby@gmail.com, 9876



      3. .....



      The Employee table has columns id, name, email, phone, employer_id fk references Employer table.



      What I think the query might be is



      SELECT * 
      FROM Employee
      where employer_id = 1
      and LOWER(name) like '%jo%'
      or LOWER(email) like '%jo%'
      or LOWER(phone) like '%jo%'


      I want to know whether this is a valid query to use. I am not sure about its performance. Also I am not sure how to add index to this table in this particular use case.



      I would really appreciate your valuable suggestions.









      share







      New contributor




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












      I am adding a search button with the suggestions displayed while we type on it similar to google and I need to search multiple columns in a single table. How to add indexing for that columns?



      I have two tables in my application named as Employer and Employee. I want to add a search box so that the Employer can search employees of only his organisation based on their name or email or phone number. When the employers types on the search box I need to show the suggestions below. For Ex. when employer types Jo on the text box, I will show suggestions as



      1. Jon, jon@gmail.com, 12345



      2. Bobby, jon-bobby@gmail.com, 9876



      3. .....



      The Employee table has columns id, name, email, phone, employer_id fk references Employer table.



      What I think the query might be is



      SELECT * 
      FROM Employee
      where employer_id = 1
      and LOWER(name) like '%jo%'
      or LOWER(email) like '%jo%'
      or LOWER(phone) like '%jo%'


      I want to know whether this is a valid query to use. I am not sure about its performance. Also I am not sure how to add index to this table in this particular use case.



      I would really appreciate your valuable suggestions.







      mysql





      share







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










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      share



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      asked 3 mins ago









      sureshbabusureshbabu

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






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