In table_A I have data from this week, the IDs started from 1 up to 5000.
In table_B I have data from last month, whereas the first let's say 3000 IDs conflict with the ones in table_A, and it's not the same data for all of the IDs (ID 1 in table_A is not the same as ID 1 in table_B for example).
I want to basically merge table_B into table_A but getting an ID conflict since some of the IDs I am trying to import already exists.
Table A
id timestamp price
... ... ...
518 2021-09-16 20
Table B
id timestamp price
518 2021-08-15 10
Is there any clever solution out there for this type of issue?
CodePudding user response:
Leave out the id
column when inserting from B
to A
.
INSERT INTO table_A (col1, col2, col3, ...)
SELECT col1, col2, col3, ...
FROM table_B
The columns listed are all the columns except the id
column. I assume this is an AUTO_INCREMENT
column, so new IDs will be assigned for them after merging.
Before you ask: No, there's no shortcut to select all columns except id
. You have to list them all explicitly.