如何在Informatica中执行增量加载？

Question

i want to load data into target table. the load will be delta(Incremental). I want load initial load and later i will schedule daily jobs. how can i do this using parameter file.

Answer 1

Create a mapping variable say $LOAD_DATE . In the SQ overide query put a condition UPDT_TS > $$LOAD_DATE .

Also in an expression transformation, use SETVARIABLE function to set the variable to SESSIONSTARTTIME .

Now for the initial load, set $$LOAD_DATE=01/01/1900 in the parameter file.

For delta loads simply remove the parameter from the parameter file. It will take the value saved in repository, which is the last load date.