Question

I’m inserting a large number of rows into Table_A. Table_A includes a B_ID column which points to Table_B.B_ID.

Table B has just two columns: Table_B.B_ID (the primary key) and Table_B.Name.

I know the value for every Table_A field I’m inserting except B_ID. I only know the corresponding Table_B.Name. So how can I insert multiple rows into Table_A?

Here’s a pseudocode version of what I want to do:

REPLACE INTO Table_A (Table_A.A_ID, Table_A.Field, Table_A.B_ID) VALUES
(1, 'foo', [SELECT B_ID FROM Table_B WHERE Table_B.Name = 'A'),
(2, 'bar', [SELECT B_ID FROM Table_B WHERE Table_B.Name = 'B'),...etc

Answer 1

I’ve had to do things like this when deploying scripts to a production environment where Ids differed in environments. Otherwise it’s probably easier to type out the ID’s

REPLACE INTO table_a (table_a.a_id, table_a.field, table_a.b_id) 
SELECT 1, 'foo', b_id, FROM table_b WHERE name = 'A' 
UNION ALL SELECT 2, 'bar', b_id, FROM table_b WHERE name = 'B'