mysqldump - Merging tables in MySQL - sum up columns -
I have an interesting problem, I'm sure it's a simple answer, but I do not think docs do.
I have different database tables on different servers that have the same table schema with the same primary key.
I want to merge tables together on one server. However, if the line on Server1.Table1 is present in Server2.Table2, then I sum the total amount in the specified column.
Table1 {column_pk, counter}; "Test 1", 3 "Test 2", 4
Table 2 {column_pk, counter}; "Test1", 5 "test2", 6
So after my merger I want to:
"test1", 8 "test2", 10
Actually I
What are my options?
appreciate someone I input, thank you
Tebl_inu ( Column_pk, counter) VALUES ('test', 4) Duplicate key update c = C + 4;
Where 4
and test
are replaced with your actual data.
How do you get the export file containing those questions, I suggest you use regular expressions to modify a standard export. Or both of them in the same table and they are suggested as suggested by
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