What's new in the virtual table interface, Version 12.10
This publication includes information about new features and changes in existing functions.
For a complete list of what's new in this release, go to What's new in Informix®.
Overview | Reference |
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Faster queries with IN conditions through virtual
tables Access methods that are created through the virtual table interface now process IN conditions in query predicates that operate on simple columns. Processing through a virtual table interface is generally faster than SQL processing. For example, queries with IN conditions that you run on time series virtual tables now run faster than in previous releases. |
Interpret the qualification descriptor |
Overview | Reference |
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Faster queries through the virtual table interface You can create an access method through the virtual table interface to process qualifiers to a WHERE clause that contain multiple column, constant, or expression parameters. Processing through a virtual table interface is generally faster than SQL processing. Previously, the virtual table interface processed only simple qualifiers that consisted of a Boolean operator that compared a column name and a constant. You can use the new parameter descriptor to describe multiple column, constant, or expression parameters to the qualifier clause. |
Interpret the parameter descriptor |