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Disallow finite partition bound following earlier UNBOUNDED column.

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Amit Langote, per an observation by me.

Discussion: http://postgr.es/m/CA+TgmoYWnV2GMnYLG-Czsix-E1WGAbo4D+0tx7t9NdfYBDMFsA@mail.gmail.com
This commit is contained in:
Robert Haas
2017-05-09 22:41:12 -04:00
parent 489b96e80b
commit 3439f84475
3 changed files with 46 additions and 0 deletions
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34
src/backend/parser/parse_utilcmd.c
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@ -3358,6 +3358,7 @@ transformPartitionBound(ParseState *pstate, Relation parent, Node *bound)
int i,
j;
char *colname;
bool seen_unbounded;
if (spec->strategy != PARTITION_STRATEGY_RANGE)
ereport(ERROR,
@ -3376,6 +3377,39 @@ transformPartitionBound(ParseState *pstate, Relation parent, Node *bound)
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("TO must specify exactly one value per partitioning column")));
/*
* Check that no finite value follows a UNBOUNDED literal in either of
* lower and upper bound lists.
*/
seen_unbounded = false;
foreach(cell1, spec->lowerdatums)
{
PartitionRangeDatum *ldatum;
ldatum = (PartitionRangeDatum *) lfirst(cell1);
if (ldatum->infinite)
seen_unbounded = true;
else if (seen_unbounded)
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
errmsg("cannot specify finite value after UNBOUNDED"),
parser_errposition(pstate, exprLocation((Node *) ldatum))));
}
seen_unbounded = false;
foreach(cell1, spec->upperdatums)
{
PartitionRangeDatum *rdatum;
rdatum = (PartitionRangeDatum *) lfirst(cell1);
if (rdatum->infinite)
seen_unbounded = true;
else if (seen_unbounded)
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
errmsg("cannot specify finite value after UNBOUNDED"),
parser_errposition(pstate, exprLocation((Node *) rdatum))));
}
i = j = 0;
result_spec->lowerdatums = result_spec->upperdatums = NIL;
forboth(cell1, spec->lowerdatums, cell2, spec->upperdatums)