Jmeter_ gets the parameters from the response of the jdbc request for correlation
1: Find out the data to be fetched from sql table
2: We need to take the data with id 4451 out of sql, transfer it to the next sql, and delete it.
3: The parameters for writing an interface are somewhat different and become var_id_1. var_id is the variable defined in sql before,_1 is to take the first line of data. This_1 is required
4: Let's look at the results. Here we have taken out the id 4451, passed it to the next interface, and performed the delete operation.
It's that simple ~ goodbye