Teach eval_const_expressions() to handle some more cases. Add some infrastructure (mostly macros) to make it easier to write typical cases for constant-expression simplification. Add simplification processing for ArrayRef, RowExpr, and ScalarArrayOpExpr node types, which formerly went unsimplified even if all their inputs were constants. Also teach it to simplify FieldSelect from a composite constant. Make use of the new infrastructure to reduce the amount of code needed for the existing ArrayExpr and ArrayCoerceExpr cases.
One existing test case changes output as a result of the fact that RowExpr can now be folded to a constant. All the new code is exercised by existing test cases according to gcov, so I feel no need to add additional tests. Tom Lane, reviewed by Dmitry Dolgov Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/3decd150a2d5a8f8d43010dd0c207746ba946303 Modified Files -------------- src/backend/optimizer/util/clauses.c | 219 ++++++++++++++++++++++----------- src/test/regress/expected/rowtypes.out | 6 +- 2 files changed, 150 insertions(+), 75 deletions(-)
