Available in versions: Dev (3.18) | Latest (3.17)

This is experimental functionality, and as such subject to change. Use at your own risk!

This documentation is for the unreleased development version of jOOQ. Click on the above version links to get this documentation for a supported version of jOOQ.

Merge AND predicates

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

An AND predicate combining comparison predicates that share the same operands can often be merged into a single comparison predicate.

Using Settings.transformPatternsMergeAndComparison, the following transformations can be achieved:

-- With Settings.transformPatternsMergeAndComparison active, this:
SELECT
  x = a AND x >= a,
  x = a AND x <= a,
  x > a AND x < a,
  x > a AND x != a,
  x < a AND x != a
  -- And many more
FROM tab;

-- ... is transformed into the equivalent expression:
SELECT
  x = a,  -- x = a AND x >= a,
  x = a,  -- x = a AND x <= a,
  x != x, -- x > a AND x < a,
  x > a,  -- x > a AND x != a,
  x < a   -- x < a AND x != a
  -- And many more
FROM tab;

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