1
0
mirror of https://github.com/postgres/postgres.git synced 2025-05-02 11:44:50 +03:00

Update and improve comments.

Commits 6f6b99d1335be8ea1b74581fc489a97b109dd08a and
f3b0897a1213f46b4d3a99a7f8ef3a4b32e03572 didn't properly update
these comments.

Etsuro Fujita, reviewed by Amit Langote

Discussion: http://postgr.es/m/5A671FE1.6020305@lab.ntt.co.jp
This commit is contained in:
Robert Haas 2018-02-28 10:09:31 -05:00
parent 6d933da306
commit c161ea138f

View File

@ -1725,14 +1725,11 @@ make_partition_op_expr(PartitionKey key, int keynum,
/*
* get_qual_for_hash
*
* Given a list of partition columns, modulus and remainder corresponding to a
* partition, this function returns CHECK constraint expression Node for that
* partition.
* Returns a CHECK constraint expression to use as a hash partition's
* constraint, given the parent relation and partition bound structure.
*
* The partition constraint for a hash partition is always a call to the
* built-in function satisfies_hash_partition(). The first two arguments are
* the modulus and remainder for the partition; the remaining arguments are the
* values to be hashed.
* built-in function satisfies_hash_partition().
*/
static List *
get_qual_for_hash(Relation parent, PartitionBoundSpec *spec)
@ -1812,7 +1809,7 @@ get_qual_for_hash(Relation parent, PartitionBoundSpec *spec)
* get_qual_for_list
*
* Returns an implicit-AND list of expressions to use as a list partition's
* constraint, given the partition key and bound structures.
* constraint, given the parent relation and partition bound structure.
*
* The function returns NIL for a default partition when it's the only
* partition since in that case there is no constraint.
@ -2086,7 +2083,7 @@ get_range_nulltest(PartitionKey key)
* get_qual_for_range
*
* Returns an implicit-AND list of expressions to use as a range partition's
* constraint, given the partition key and bound structures.
* constraint, given the parent relation and partition bound structure.
*
* For a multi-column range partition key, say (a, b, c), with (al, bl, cl)
* as the lower bound tuple and (au, bu, cu) as the upper bound tuple, we