![]() ![]() ![]() So for example: create table destination as selectĭ.field1, d.field2.,coalesce(s.country,d. ![]() Please note that the other table should have the set of fields which. You can avoid that by explicitly stating all of the columns you want to retrieve from destination_old and perhaps using coalesce to retrieve the values from destination_old if the country field in source is null. The SQLite INSERT INTO SELECT keyword is used to populate a table using another table. Using the pattern above you end up with two country fields. I suspect that update statements with joins weren't included in SQLite because they're powerful but a bit risky. It's safe because you have a copy of destination before you altered it. UPDATE table1 SET status (SELECT t2.status FROM table2 t2 WHERE t2.transid table1.id), name (SELECT t2. I've been wrestling with this, and I know there are other options, but I've come to the conclusion the safest pattern is: create table destination_old as select * from destination įrom destination_old d left join source s It would be better that using the full name table1.id. If I write something like CREATE TRIGGER mytrigger AFTER INSERT ON table BEGIN INSERT INTO backup SELECT FROM NEW END it fails on insert with error 'no such table: main. I have an application using SQLite with two tables a master table and a scheduled table. If you have data already present in both the tables and you want to update a table column values based on some condition then use this UPDATE Table1 set Name=(select t2.Name from Table2 t2 where t2.id=Table1.id) In a trigger insert all columns of NEW into another table (1) By anonymous on 02:53:28 source The goal is to basically make a backup log table. Update values in one table from data in another. See SQL As Understood By SQLite: INSERT for a formal definition. Solution 1 INSERT INTO Destination SELECT * FROM Source ![]()
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