diff options
Diffstat (limited to 'src/include/nodes')
| -rw-r--r-- | src/include/nodes/primnodes.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index db1d4b9cfa6..f9423783634 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -165,6 +165,11 @@ typedef struct Var /* * Const + * + * Note: for varlena data types, we make a rule that a Const node's value + * must be in non-extended form (4-byte header, no compression or external + * references). This ensures that the Const node is self-contained and makes + * it more likely that equal() will see logically identical values as equal. */ typedef struct Const { |