在其他两个表中的一个表中插入数据

Question

I need to insert data in a table from two other tables that have the same schema.

I have an exception :

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FULL JOIN data e2 ON e1.siren = e2.siren' at line 3

Here's My code :

string MergeTables = string.Format(@"INSERT INTO Table3 (a,b) 
SELECT e1.a, e2.b
FROM bilan e1 FULL JOIN data e2
ON e1.id= e2.id;

");

Answer 1

Try to remove ; at the end of your sql and remove FULL due to MySQL do not support FULL JOIN

  string MergeTables = string.Format(@"INSERT INTO exercices (AF,region) 
  SELECT e1.AF, e2.region FROM bilan e1 
    JOIN data e2 ON e1.siren = e2.siren
   ");

Answer 2

MySQL does not support FULL JOIN

Try to emulate it as follows:

SELECT e1.AF FROM bilan e1
LEFT JOIN data e2 ON e1.siren = e2.siren
UNION
SELECT e2.region FROM data e2
RIGHT JOIN bilan e1 ON e2.siren = e1.siren