I am using pentaho 7.1 which supports metadata injector for update step. Can anyone help me how to pass multiple fields and its values simultaneously using metadata injector
How to pass fields to pentaho update step using metadata injector?
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You need multiple streams of data with varying numbers of rows feeding data into the metadata injection step:
See https://www.youtube.com/watch?time_continue=101&v=EjzgzOanq1o for a tutorial by none other than Matt Casters.
To iterate over multiple tables I suggest you run the transformation multiple times, once for each table to update, fetching the metadata to inject from a text file, or a config table.