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