Switch stage
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Switch stage
how switch stage differs from sql (may be in functionality)?
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The Switch stage is closest to the switch construct in the C programming languages. It is quite unlike anything in SQL. The closest SQL construct is CASE, but even CASE allows for expressions - switch does not, being driven purely by values.
The Filter stage uses SQL-like WHERE clauses.
The Filter stage uses SQL-like WHERE clauses.
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Any contribution to this forum is my own opinion and does not necessarily reflect any position that IBM may hold.
Any contribution to this forum is my own opinion and does not necessarily reflect any position that IBM may hold.