mysql trigger after insert with 3 tables











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I have 3 tables: the first one gets all records to the t1 table, the second one is where my whitelist entries are, and the third one is for making some decision in the future regarding to t2.
I need to create after insert trigger an update via my third table.
the steps :




  1. some value come into the tables called "t1"

  2. need to check if the value is in "t2"

  3. if the value is in t2 so go to t3 and do something, if the value is not in t2 so go to t3 and do something else.

  4. but the value will always need to enter t1.


This is my code and it does not work, I don't know how to apply it I've tried many options already.



CREATE TRIGGER check_whitelist AFTER INSERT ON t1

FOR EACH ROW

SELECT

IF(IFNULL(new.name=(

    select name From t2 where (t2.name = new.name),

    UPDATE t3 SET option1 =0 ,

    UPDATE t3 SET option2 =1

)))


Please help me with writing this code.






mysql







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    up vote
    0
    down vote

    favorite












    I have 3 tables: the first one gets all records to the t1 table, the second one is where my whitelist entries are, and the third one is for making some decision in the future regarding to t2.
    I need to create after insert trigger an update via my third table.
    the steps :




    1. some value come into the tables called "t1"

    2. need to check if the value is in "t2"

    3. if the value is in t2 so go to t3 and do something, if the value is not in t2 so go to t3 and do something else.

    4. but the value will always need to enter t1.


    This is my code and it does not work, I don't know how to apply it I've tried many options already.



    CREATE TRIGGER check_whitelist AFTER INSERT ON t1
    
FOR EACH ROW
    
SELECT
    
IF(IFNULL(new.name=(
    
    select name From t2 where (t2.name = new.name),
    
    UPDATE t3 SET option1 =0 ,
    
    UPDATE t3 SET option2 =1
    
)))


    Please help me with writing this code.






    mysql







    share|improve this question









    New contributor




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






















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have 3 tables: the first one gets all records to the t1 table, the second one is where my whitelist entries are, and the third one is for making some decision in the future regarding to t2.
      I need to create after insert trigger an update via my third table.
      the steps :




      1. some value come into the tables called "t1"

      2. need to check if the value is in "t2"

      3. if the value is in t2 so go to t3 and do something, if the value is not in t2 so go to t3 and do something else.

      4. but the value will always need to enter t1.


      This is my code and it does not work, I don't know how to apply it I've tried many options already.



      CREATE TRIGGER check_whitelist AFTER INSERT ON t1
      
FOR EACH ROW
      
SELECT
      
IF(IFNULL(new.name=(
      
    select name From t2 where (t2.name = new.name),
      
    UPDATE t3 SET option1 =0 ,
      
    UPDATE t3 SET option2 =1
      
)))


      Please help me with writing this code.






      mysql







      share|improve this question









      New contributor




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











      I have 3 tables: the first one gets all records to the t1 table, the second one is where my whitelist entries are, and the third one is for making some decision in the future regarding to t2.
      I need to create after insert trigger an update via my third table.
      the steps :




      1. some value come into the tables called "t1"

      2. need to check if the value is in "t2"

      3. if the value is in t2 so go to t3 and do something, if the value is not in t2 so go to t3 and do something else.

      4. but the value will always need to enter t1.


      This is my code and it does not work, I don't know how to apply it I've tried many options already.



      CREATE TRIGGER check_whitelist AFTER INSERT ON t1
      
FOR EACH ROW
      
SELECT
      
IF(IFNULL(new.name=(
      
    select name From t2 where (t2.name = new.name),
      
    UPDATE t3 SET option1 =0 ,
      
    UPDATE t3 SET option2 =1
      
)))


      Please help me with writing this code.






      mysql




      mysql






      share|improve this question









      New contributor




      a.artur 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 question









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      share|improve this question




      share|improve this question








      edited 23 hours ago









      Yoram de Langen

      3,82611524




      3,82611524






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      asked 23 hours ago









      a.artur

      12




      12




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      New contributor





      a.artur 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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      Check out our Code of Conduct.
























          1 Answer
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          You can't put an UPDATE query inside a SELECT query. Use an IF() expression in the value that you're assigning to option1.



          FOR EACH ROW
          
UPDATE t3 SET option1 = IF(new.name = (SELECT name FROM t2 WHERE t2.plate = new.name),
          
                           0, 1)





          share|improve this answer





















          • thank you very much its work for me.
            – a.artur
            20 hours ago











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          active

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          active

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          active

          oldest

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          up vote
          0
          down vote













          You can't put an UPDATE query inside a SELECT query. Use an IF() expression in the value that you're assigning to option1.



          FOR EACH ROW
          
UPDATE t3 SET option1 = IF(new.name = (SELECT name FROM t2 WHERE t2.plate = new.name),
          
                           0, 1)





          share|improve this answer





















          • thank you very much its work for me.
            – a.artur
            20 hours ago















          up vote
          0
          down vote













          You can't put an UPDATE query inside a SELECT query. Use an IF() expression in the value that you're assigning to option1.



          FOR EACH ROW
          
UPDATE t3 SET option1 = IF(new.name = (SELECT name FROM t2 WHERE t2.plate = new.name),
          
                           0, 1)





          share|improve this answer





















          • thank you very much its work for me.
            – a.artur
            20 hours ago













          up vote
          0
          down vote










          up vote
          0
          down vote









          You can't put an UPDATE query inside a SELECT query. Use an IF() expression in the value that you're assigning to option1.



          FOR EACH ROW
          
UPDATE t3 SET option1 = IF(new.name = (SELECT name FROM t2 WHERE t2.plate = new.name),
          
                           0, 1)





          share|improve this answer












          You can't put an UPDATE query inside a SELECT query. Use an IF() expression in the value that you're assigning to option1.



          FOR EACH ROW
          
UPDATE t3 SET option1 = IF(new.name = (SELECT name FROM t2 WHERE t2.plate = new.name),
          
                           0, 1)






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 23 hours ago









          Barmar

          412k34237339




          412k34237339












          • thank you very much its work for me.
            – a.artur
            20 hours ago


















          • thank you very much its work for me.
            – a.artur
            20 hours ago
















          thank you very much its work for me.
          – a.artur
          20 hours ago




          thank you very much its work for me.
          – a.artur
          20 hours ago










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