diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index a4bc7511773..3de11f020ff 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -256,6 +256,18 @@ typedef struct Param * The direct arguments appear in aggdirectargs (as a list of plain * expressions, not TargetEntry nodes). * + * aggtranstype is the data type of the state transition values for this + * aggregate (resolved to an actual type, if agg's transtype is polymorphic). + * This is determined during planning and is InvalidOid before that. + * + * aggargtypes is an OID list of the data types of the direct and regular + * arguments. Normally it's redundant with the aggdirectargs and args lists, + * but in a combining aggregate, it's not because the args list has been + * replaced with a single argument representing the partial-aggregate + * transition values. + * + * XXX need more documentation about partial aggregation here + * * 'aggtype' and 'aggoutputtype' are the same except when we're performing * partal aggregation; in that case, we output transition states. Nothing * interesting happens in the Aggref itself, but we must set the output data @@ -272,6 +284,8 @@ typedef struct Aggref Oid aggoutputtype; /* type Oid of result of this aggregate */ Oid aggcollid; /* OID of collation of result */ Oid inputcollid; /* OID of collation that function should use */ + Oid aggtranstype; /* type Oid of aggregate's transition value */ + List *aggargtypes; /* type Oids of direct and aggregated args */ List *aggdirectargs; /* direct arguments, if an ordered-set agg */ List *args; /* aggregated arguments and sort expressions */ List *aggorder; /* ORDER BY (list of SortGroupClause) */ |