diff options
Diffstat (limited to 'src/include/access/tupdesc.h')
| -rw-r--r-- | src/include/access/tupdesc.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/include/access/tupdesc.h b/src/include/access/tupdesc.h index 396eeb7a0bb..a25b94ba423 100644 --- a/src/include/access/tupdesc.h +++ b/src/include/access/tupdesc.h @@ -42,7 +42,7 @@ typedef struct TupleConstr struct AttrMissing *missing; /* missing attributes values, NULL if none */ uint16 num_defval; uint16 num_check; - bool has_not_null; + bool has_not_null; /* any not-null, including not valid ones */ bool has_generated_stored; bool has_generated_virtual; } TupleConstr; @@ -76,10 +76,16 @@ typedef struct CompactAttribute bool atthasmissing; /* as FormData_pg_attribute.atthasmissing */ bool attisdropped; /* as FormData_pg_attribute.attisdropped */ bool attgenerated; /* FormData_pg_attribute.attgenerated != '\0' */ - bool attnotnull; /* as FormData_pg_attribute.attnotnull */ + char attnullability; /* status of not-null constraint, see below */ uint8 attalignby; /* alignment requirement in bytes */ } CompactAttribute; +/* Valid values for CompactAttribute->attnullability */ +#define ATTNULLABLE_UNRESTRICTED 'f' /* No constraint exists */ +#define ATTNULLABLE_UNKNOWN 'u' /* constraint exists, validity unknown */ +#define ATTNULLABLE_VALID 'v' /* valid constraint exists */ +#define ATTNULLABLE_INVALID 'i' /* constraint exists, marked invalid */ + /* * This struct is passed around within the backend to describe the structure * of tuples. For tuples coming from on-disk relations, the information is |