Update JIT tuple deforming code for virtual generated columns The JIT deforming code contains an optimization that determines which columns are guaranteed to exist in the tuple. That's used to allow skipping of reading the tuple's natts when the code only needs to deform attributes that are guaranteed to always exist in all tuples. 83ea6c540 missed updating this code to account for VIRTUAL generated columns. These are stored as NULLs in the tuple, but may be defined as NOT NULL. This could result in the code thinking more columns are guaranteed to exist than actually do.
Author: David Rowley <[email protected]> Reviewed-by: Chao Li <[email protected]> Backpatch-through: 18 Discussion: https://postgr.es/m/[email protected] Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/e9692de1d6f617031be73251949eae31b29275bd Modified Files -------------- src/backend/jit/llvm/llvmjit_deform.c | 36 ++++++++++++++------- src/test/regress/expected/generated_virtual.out | 42 +++++++++++++++++++++++++ src/test/regress/sql/generated_virtual.sql | 21 +++++++++++++ 3 files changed, 87 insertions(+), 12 deletions(-)
