Question

I am getting a syntax error in case statement in mysql.
1064- you have an error in your sql statement.

insert into
abc_table(release_date,title,detail,num)  
select model1.release_date,model1.title,model1.detail,model1.num
CASE 
WHEN model1.num= 0 THEN 3
WHEN model1.num= 1 THEN 1
WHEN model1.num= 2 THEN 2
END AS model1.num
from def_table  model1

Is this syntax is correct in mysql

Answer 1

You have two columns for model1.num:

insert into abc_table(release_date,title,detail,num)  
select model1.release_date,
   model1.title,
   model1.detail,
   model1.num -- <-- extra
   CASE 
      WHEN model1.num= 0 THEN 3
      WHEN model1.num= 1 THEN 1
      WHEN model1.num= 2 THEN 2
      END AS num
from def_table  model1

Your code should be:

insert into abc_table(release_date,title,detail,num)  
select model1.release_date,
   model1.title,
   model1.detail,
   CASE 
      WHEN model1.num= 0 THEN 3
      WHEN model1.num= 1 THEN 1
      WHEN model1.num= 2 THEN 2
      END AS num
from def_table  model1

Note: Sometimes, formatting your code will help find these errors. It can be difficult to see when all of the columns are in one row.