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Use MINVALUE/MAXVALUE instead of UNBOUNDED for range partition bounds. 

Previously, UNBOUNDED meant no lower bound when used in the FROM list,
and no upper bound when used in the TO list, which was OK for
single-column range partitioning, but problematic with multiple
columns. For example, an upper bound of (10.0, UNBOUNDED) would not be
collocated with a lower bound of (10.0, UNBOUNDED), thus making it
difficult or impossible to define contiguous multi-column range
partitions in some cases.

Fix this by using MINVALUE and MAXVALUE instead of UNBOUNDED to
represent a partition column that is unbounded below or above
respectively. This syntax removes any ambiguity, and ensures that if
one partition's lower bound equals another partition's upper bound,
then the partitions are contiguous.

Also drop the constraint prohibiting finite values after an unbounded
column, and just document the fact that any values after MINVALUE or
MAXVALUE are ignored. Previously it was necessary to repeat UNBOUNDED
multiple times, which was needlessly verbose.

Note: Forces a post-PG 10 beta2 initdb.

Report by Amul Sul, original patch by Amit Langote with some
additional hacking by me.

Discussion: https://postgr.es/m/CAAJ_b947mowpLdxL3jo3YLKngRjrq9+Ej4ymduQTfYR+8=YAYQ@mail.gmail.com
This commit is contained in:
Dean Rasheed 2017-07-21 09:20:47 +01:00
parent 866f4a7c21
commit d363d42bb9
18 changed files with 378 additions and 238 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
doc/src/sgml/ref/create_table.sgml
View File

@ -87,8 +87,8 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXI
<phrase>and <replaceable class="PARAMETER">partition_bound_spec</replaceable> is:</phrase>
IN ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replaceable class="PARAMETER">string_literal</replaceable> | NULL } [, ...] ) |
FROM ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replaceable class="PARAMETER">string_literal</replaceable> | UNBOUNDED } [, ...] )
TO ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replaceable class="PARAMETER">string_literal</replaceable> | UNBOUNDED } [, ...] )
FROM ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replaceable class="PARAMETER">string_literal</replaceable> | MINVALUE | MAXVALUE } [, ...] )
TO ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replaceable class="PARAMETER">string_literal</replaceable> | MINVALUE | MAXVALUE } [, ...] )
<phrase><replaceable class="PARAMETER">index_parameters</replaceable> in <literal>UNIQUE</literal>, <literal>PRIMARY KEY</literal>, and <literal>EXCLUDE</literal> constraints are:</phrase>
@ -269,10 +269,10 @@ FROM ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replace
<para>
Each of the values specified in
the <replaceable class="PARAMETER">partition_bound_spec</> is
a literal, <literal>NULL</literal>, or <literal>UNBOUNDED</literal>.
Each literal value must be either a numeric constant that is coercible
to the corresponding partition key column's type, or a string literal
that is valid input for that type.
a literal, <literal>NULL</literal>, <literal>MINVALUE</literal>, or
<literal>MAXVALUE</literal>. Each literal value must be either a
numeric constant that is coercible to the corresponding partition key
column's type, or a string literal that is valid input for that type.
</para>
<para>
@ -300,13 +300,46 @@ FROM ( { <replaceable class="PARAMETER">numeric_literal</replaceable> | <replace
</para>
<para>
Writing <literal>UNBOUNDED</literal> in <literal>FROM</literal>
signifies <literal>-infinity</literal> as the lower bound of the
corresponding column, whereas when written in <literal>TO</literal>,
it signifies <literal>+infinity</literal> as the upper bound.
All items following an <literal>UNBOUNDED</literal> item within
a <literal>FROM</literal> or <literal>TO</literal> list must also
be <literal>UNBOUNDED</literal>.
The special values <literal>MINVALUE</> and <literal>MAXVALUE</>
may be used when creating a range partition to indicate that there
is no lower or upper bound on the column's value. For example, a
partition defined using <literal>FROM (MINVALUE) TO (10)</> allows
any values less than 10, and a partition defined using
<literal>FROM (10) TO (MAXVALUE)</> allows any values greater than
or equal to 10.
</para>
<para>
When creating a range partition involving more than one column, it
can also make sense to use <literal>MAXVALUE</> as part of the lower
bound, and <literal>MINVALUE</> as part of the upper bound. For
example, a partition defined using
<literal>FROM (0, MAXVALUE) TO (10, MAXVALUE)</> allows any rows
where the first partition key column is greater than 0 and less than
or equal to 10. Similarly, a partition defined using
<literal>FROM ('a', MINVALUE) TO ('b', MINVALUE)</> allows any rows
where the first partition key column starts with "a".
</para>
<para>
Note that any values after <literal>MINVALUE</> or
<literal>MAXVALUE</> in a partition bound are ignored; so the bound
<literal>(10, MINVALUE, 0)</> is equivalent to
<literal>(10, MINVALUE, 10)</> and <literal>(10, MINVALUE, MINVALUE)</>
and <literal>(10, MINVALUE, MAXVALUE)</>.
</para>
<para>
Also note that some element types, such as <literal>timestamp</>,
have a notion of "infinity", which is just another value that can
be stored. This is different from <literal>MINVALUE</> and
<literal>MAXVALUE</>, which are not real values that can be stored,
but rather they are ways of saying that the value is unbounded.
<literal>MAXVALUE</> can be thought of as being greater than any
other value, including "infinity" and <literal>MINVALUE</> as being
less than any other value, including "minus infinity". Thus the range
<literal>FROM ('infinity') TO (MAXVALUE)</> is not an empty range; it
allows precisely one value to be stored &mdash; "infinity".
</para>
<para>
@ -1610,7 +1643,7 @@ CREATE TABLE measurement_y2016m07
<programlisting>
CREATE TABLE measurement_ym_older
PARTITION OF measurement_year_month
FOR VALUES FROM (unbounded, unbounded) TO (2016, 11);
FOR VALUES FROM (MINVALUE, 0) TO (2016, 11);
CREATE TABLE measurement_ym_y2016m11
PARTITION OF measurement_year_month

213
src/backend/catalog/partition.c
View File

@ -67,23 +67,14 @@
* is an upper bound.
*/
/* Ternary value to represent what's contained in a range bound datum */
typedef enum RangeDatumContent
{
RANGE_DATUM_FINITE = 0, /* actual datum stored elsewhere */
RANGE_DATUM_NEG_INF, /* negative infinity */
RANGE_DATUM_POS_INF /* positive infinity */
} RangeDatumContent;
typedef struct PartitionBoundInfoData
{
char strategy; /* list or range bounds? */
int ndatums; /* Length of the datums following array */
Datum **datums; /* Array of datum-tuples with key->partnatts
* datums each */
RangeDatumContent **content; /* what's contained in each range bound
* datum? (see the above enum); NULL for
* list partitioned tables */
PartitionRangeDatumKind **kind; /* The kind of each range bound datum;
* NULL for list partitioned tables */
int *indexes; /* Partition indexes; one entry per member of
* the datums array (plus one if range
* partitioned table) */
@ -110,7 +101,7 @@ typedef struct PartitionRangeBound
{
int index;
Datum *datums; /* range bound datums */
RangeDatumContent *content; /* what's contained in each datum? */
PartitionRangeDatumKind *kind; /* the kind of each datum */
bool lower; /* this is the lower (vs upper) bound */
} PartitionRangeBound;
@ -136,10 +127,10 @@ static List *generate_partition_qual(Relation rel);
static PartitionRangeBound *make_one_range_bound(PartitionKey key, int index,
List *datums, bool lower);
static int32 partition_rbound_cmp(PartitionKey key,
Datum *datums1, RangeDatumContent *content1, bool lower1,
PartitionRangeBound *b2);
Datum *datums1, PartitionRangeDatumKind *kind1,
bool lower1, PartitionRangeBound *b2);
static int32 partition_rbound_datum_cmp(PartitionKey key,
Datum *rb_datums, RangeDatumContent *rb_content,
Datum *rb_datums, PartitionRangeDatumKind *rb_kind,
Datum *tuple_datums);
static int32 partition_bound_cmp(PartitionKey key,
@ -366,29 +357,25 @@ RelationBuildPartitionDesc(Relation rel)
bool is_distinct = false;
int j;
/* Is current bound is distinct from the previous? */
/* Is the current bound distinct from the previous one? */
for (j = 0; j < key->partnatts; j++)
{
Datum cmpval;
if (prev == NULL)
if (prev == NULL || cur->kind[j] != prev->kind[j])
{
is_distinct = true;
break;
}
/*
* If either of them has infinite element, we can't equate
* them. Even when both are infinite, they'd have
* opposite signs, because only one of cur and prev is a
* lower bound).
* If the bounds are both MINVALUE or MAXVALUE, stop now
* and treat them as equal, since any values after this
* point must be ignored.
*/
if (cur->content[j] != RANGE_DATUM_FINITE ||
prev->content[j] != RANGE_DATUM_FINITE)
{
is_distinct = true;
if (cur->kind[j] != PARTITION_RANGE_DATUM_VALUE)
break;
}
cmpval = FunctionCall2Coll(&key->partsupfunc[j],
key->partcollation[j],
cur->datums[j],
@ -513,8 +500,9 @@ RelationBuildPartitionDesc(Relation rel)
case PARTITION_STRATEGY_RANGE:
{
boundinfo->content = (RangeDatumContent **) palloc(ndatums *
sizeof(RangeDatumContent *));
boundinfo->kind = (PartitionRangeDatumKind **)
palloc(ndatums *
sizeof(PartitionRangeDatumKind *));
boundinfo->indexes = (int *) palloc((ndatums + 1) *
sizeof(int));
@ -524,18 +512,17 @@ RelationBuildPartitionDesc(Relation rel)
boundinfo->datums[i] = (Datum *) palloc(key->partnatts *
sizeof(Datum));
boundinfo->content[i] = (RangeDatumContent *)
boundinfo->kind[i] = (PartitionRangeDatumKind *)
palloc(key->partnatts *
sizeof(RangeDatumContent));
sizeof(PartitionRangeDatumKind));
for (j = 0; j < key->partnatts; j++)
{
if (rbounds[i]->content[j] == RANGE_DATUM_FINITE)
if (rbounds[i]->kind[j] == PARTITION_RANGE_DATUM_VALUE)
boundinfo->datums[i][j] =
datumCopy(rbounds[i]->datums[j],
key->parttypbyval[j],
key->parttyplen[j]);
/* Remember, we are storing the tri-state value. */
boundinfo->content[i][j] = rbounds[i]->content[j];
boundinfo->kind[i][j] = rbounds[i]->kind[j];
}
/*
@ -617,17 +604,14 @@ partition_bounds_equal(PartitionKey key,
for (j = 0; j < key->partnatts; j++)
{
/* For range partitions, the bounds might not be finite. */
if (b1->content != NULL)
if (b1->kind != NULL)
{
/*
* A finite bound always differs from an infinite bound, and
* different kinds of infinities differ from each other.
*/
if (b1->content[i][j] != b2->content[i][j])
/* The different kinds of bound all differ from each other */
if (b1->kind[i][j] != b2->kind[i][j])
return false;
/* Non-finite bounds are equal without further examination. */
if (b1->content[i][j] != RANGE_DATUM_FINITE)
if (b1->kind[i][j] != PARTITION_RANGE_DATUM_VALUE)
continue;
}
@ -736,7 +720,7 @@ check_new_partition_bound(char *relname, Relation parent,
* First check if the resulting range would be empty with
* specified lower and upper bounds
*/
if (partition_rbound_cmp(key, lower->datums, lower->content, true,
if (partition_rbound_cmp(key, lower->datums, lower->kind, true,
upper) >= 0)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
@ -754,18 +738,18 @@ check_new_partition_bound(char *relname, Relation parent,
/*
* Test whether the new lower bound (which is treated
* inclusively as part of the new partition) lies inside an
* existing partition, or in a gap.
* inclusively as part of the new partition) lies inside
* an existing partition, or in a gap.
*
* If it's inside an existing partition, the bound at
* offset + 1 will be the upper bound of that partition,
* and its index will be >= 0.
*
* If it's in a gap, the bound at offset + 1 will be the
* lower bound of the next partition, and its index will be
* -1. This is also true if there is no next partition,
* since the index array is initialised with an extra -1 at
* the end.
* lower bound of the next partition, and its index will
* be -1. This is also true if there is no next partition,
* since the index array is initialised with an extra -1
* at the end.
*/
offset = partition_bound_bsearch(key, boundinfo, lower,
true, &equal);
@ -774,9 +758,9 @@ check_new_partition_bound(char *relname, Relation parent,
{
/*
* Check that the new partition will fit in the gap.
* For it to fit, the new upper bound must be less than
* or equal to the lower bound of the next partition,
* if there is one.
* For it to fit, the new upper bound must be less
* than or equal to the lower bound of the next
* partition, if there is one.
*/
if (offset + 1 < boundinfo->ndatums)
{
@ -788,8 +772,9 @@ check_new_partition_bound(char *relname, Relation parent,
if (cmpval < 0)
{
/*
* The new partition overlaps with the existing
* partition between offset + 1 and offset + 2.
* The new partition overlaps with the
* existing partition between offset + 1 and
* offset + 2.
*/
overlap = true;
with = boundinfo->indexes[offset + 2];
@ -1399,8 +1384,8 @@ get_qual_for_list(PartitionKey key, PartitionBoundSpec *spec)
*
* Constructs an Expr for the key column (returned in *keyCol) and Consts
* for the lower and upper range limits (returned in *lower_val and
* *upper_val). For UNBOUNDED limits, NULL is returned instead of a Const.
* All of these structures are freshly palloc'd.
* *upper_val). For MINVALUE/MAXVALUE limits, NULL is returned instead of
* a Const. All of these structures are freshly palloc'd.
*
* *partexprs_item points to the cell containing the next expression in
* the key->partexprs list, or NULL. It may be advanced upon return.
@ -1432,12 +1417,12 @@ get_range_key_properties(PartitionKey key, int keynum,
}
/* Get appropriate Const nodes for the bounds */
if (!ldatum->infinite)
if (ldatum->kind == PARTITION_RANGE_DATUM_VALUE)
*lower_val = castNode(Const, copyObject(ldatum->value));
else
*lower_val = NULL;
if (!udatum->infinite)
if (udatum->kind == PARTITION_RANGE_DATUM_VALUE)
*upper_val = castNode(Const, copyObject(udatum->value));
else
*upper_val = NULL;
@ -1471,18 +1456,16 @@ get_range_key_properties(PartitionKey key, int keynum,
* AND
* (b < bu) OR (b = bu AND c < cu))
*
* If cu happens to be UNBOUNDED, we need not emit any expression for it, so
* the last line would be:
* If a bound datum is either MINVALUE or MAXVALUE, these expressions are
* simplified using the fact that any value is greater than MINVALUE and less
* than MAXVALUE. So, for example, if cu = MAXVALUE, c < cu is automatically
* true, and we need not emit any expression for it, and the last line becomes
*
* (b < bu) OR (b = bu), which is simplified to (b <= bu)
*
* In most common cases with only one partition column, say a, the following
* expression tree will be generated: a IS NOT NULL AND a >= al AND a < au
*
* If all values of both lower and upper bounds are UNBOUNDED, the partition
* does not really have a constraint, except the IS NOT NULL constraint for
* partition keys.
*
* If we end up with an empty result list, we return a single-member list
* containing a constant TRUE, because callers expect a non-empty list.
*/
@ -1585,9 +1568,10 @@ get_qual_for_range(PartitionKey key, PartitionBoundSpec *spec)
&lower_val, &upper_val);
/*
* If either or both of lower_val and upper_val is NULL, they are
* unequal, because being NULL means the column is unbounded in the
* respective direction.
* If either value is NULL, the corresponding partition bound is
* either MINVALUE or MAXVALUE, and we treat them as unequal, because
* even if they're the same, there is no common value to equate the
* key column with.
*/
if (!lower_val || !upper_val)
break;
@ -1668,12 +1652,15 @@ get_qual_for_range(PartitionKey key, PartitionBoundSpec *spec)
/*
* For the non-last columns of this arm, use the EQ operator.
* For the last or the last finite-valued column, use GE.
* For the last column of this arm, use GT, unless this is the
* last column of the whole bound check, or the next bound
* datum is MINVALUE, in which case use GE.
*/
if (j - i < current_or_arm)
strategy = BTEqualStrategyNumber;
else if ((ldatum_next && ldatum_next->infinite) ||
j == key->partnatts - 1)
else if (j == key->partnatts - 1 ||
(ldatum_next &&
ldatum_next->kind == PARTITION_RANGE_DATUM_MINVALUE))
strategy = BTGreaterEqualStrategyNumber;
else
strategy = BTGreaterStrategyNumber;
@ -1691,11 +1678,13 @@ get_qual_for_range(PartitionKey key, PartitionBoundSpec *spec)
/*
* For the non-last columns of this arm, use the EQ operator.
* For the last finite-valued column, use LE.
* For the last column of this arm, use LT, unless the next
* bound datum is MAXVALUE, in which case use LE.
*/
if (j - i < current_or_arm)
strategy = BTEqualStrategyNumber;
else if (udatum_next && udatum_next->infinite)
else if (udatum_next &&
udatum_next->kind == PARTITION_RANGE_DATUM_MAXVALUE)
strategy = BTLessEqualStrategyNumber;
else
strategy = BTLessStrategyNumber;
@ -1716,11 +1705,15 @@ get_qual_for_range(PartitionKey key, PartitionBoundSpec *spec)
if (j - i > current_or_arm)
{
/*
* We need not emit the next arm if the new column that will
* be considered is unbounded.
* We must not emit any more arms if the new column that will
* be considered is unbounded, or this one was.
*/
need_next_lower_arm = ldatum_next && !ldatum_next->infinite;
need_next_upper_arm = udatum_next && !udatum_next->infinite;
if (!lower_val || !ldatum_next ||
ldatum_next->kind != PARTITION_RANGE_DATUM_VALUE)
need_next_lower_arm = false;
if (!upper_val || !udatum_next ||
udatum_next->kind != PARTITION_RANGE_DATUM_VALUE)
need_next_upper_arm = false;
break;
}
}
@ -2092,8 +2085,8 @@ make_one_range_bound(PartitionKey key, int index, List *datums, bool lower)
bound = (PartitionRangeBound *) palloc0(sizeof(PartitionRangeBound));
bound->index = index;
bound->datums = (Datum *) palloc0(key->partnatts * sizeof(Datum));
bound->content = (RangeDatumContent *) palloc0(key->partnatts *
sizeof(RangeDatumContent));
bound->kind = (PartitionRangeDatumKind *) palloc0(key->partnatts *
sizeof(PartitionRangeDatumKind));
bound->lower = lower;
i = 0;
@ -2102,12 +2095,9 @@ make_one_range_bound(PartitionKey key, int index, List *datums, bool lower)
PartitionRangeDatum *datum = castNode(PartitionRangeDatum, lfirst(lc));
/* What's contained in this range datum? */
bound->content[i] = !datum->infinite
? RANGE_DATUM_FINITE
: (lower ? RANGE_DATUM_NEG_INF
: RANGE_DATUM_POS_INF);
bound->kind[i] = datum->kind;
if (bound->content[i] == RANGE_DATUM_FINITE)
if (datum->kind == PARTITION_RANGE_DATUM_VALUE)
{
Const *val = castNode(Const, datum->value);
@ -2130,7 +2120,7 @@ qsort_partition_rbound_cmp(const void *a, const void *b, void *arg)
PartitionRangeBound *b2 = (*(PartitionRangeBound *const *) b);
PartitionKey key = (PartitionKey) arg;
return partition_rbound_cmp(key, b1->datums, b1->content, b1->lower, b2);
return partition_rbound_cmp(key, b1->datums, b1->kind, b1->lower, b2);
}
/*
@ -2148,13 +2138,13 @@ qsort_partition_rbound_cmp(const void *a, const void *b, void *arg)
*/
static int32
partition_rbound_cmp(PartitionKey key,
Datum *datums1, RangeDatumContent *content1, bool lower1,
PartitionRangeBound *b2)
Datum *datums1, PartitionRangeDatumKind *kind1,
bool lower1, PartitionRangeBound *b2)
{
int32 cmpval = 0; /* placate compiler */
int i;
Datum *datums2 = b2->datums;
RangeDatumContent *content2 = b2->content;
PartitionRangeDatumKind *kind2 = b2->kind;
bool lower2 = b2->lower;
for (i = 0; i < key->partnatts; i++)
@ -2162,28 +2152,21 @@ partition_rbound_cmp(PartitionKey key,
/*
* First, handle cases where the column is unbounded, which should not
* invoke the comparison procedure, and should not consider any later
* columns.
* columns. Note that the PartitionRangeDatumKind enum elements
* compare the same way as the values they represent.
*/
if (content1[i] != RANGE_DATUM_FINITE ||
content2[i] != RANGE_DATUM_FINITE)
{
/*
* If the bound values are equal, fall through and compare whether
* they are upper or lower bounds.
*/
if (content1[i] == content2[i])
break;
if (kind1[i] < kind2[i])
return -1;
else if (kind1[i] > kind2[i])
return 1;
else if (kind1[i] != PARTITION_RANGE_DATUM_VALUE)
/* Otherwise, one bound is definitely larger than the other */
if (content1[i] == RANGE_DATUM_NEG_INF)
return -1;
else if (content1[i] == RANGE_DATUM_POS_INF)
return 1;
else if (content2[i] == RANGE_DATUM_NEG_INF)
return 1;
else if (content2[i] == RANGE_DATUM_POS_INF)
return -1;
}
/*
* The column bounds are both MINVALUE or both MAXVALUE. No later
* columns should be considered, but we still need to compare
* whether they are upper or lower bounds.
*/
break;
cmpval = DatumGetInt32(FunctionCall2Coll(&key->partsupfunc[i],
key->partcollation[i],
@ -2208,12 +2191,12 @@ partition_rbound_cmp(PartitionKey key,
/*
* partition_rbound_datum_cmp
*
* Return whether range bound (specified in rb_datums, rb_content, and
* rb_lower) <=, =, >= partition key of tuple (tuple_datums)
* Return whether range bound (specified in rb_datums, rb_kind, and rb_lower)
* is <, =, or > partition key of tuple (tuple_datums)
*/
static int32
partition_rbound_datum_cmp(PartitionKey key,
Datum *rb_datums, RangeDatumContent *rb_content,
Datum *rb_datums, PartitionRangeDatumKind *rb_kind,
Datum *tuple_datums)
{
int i;
@ -2221,8 +2204,10 @@ partition_rbound_datum_cmp(PartitionKey key,
for (i = 0; i < key->partnatts; i++)
{
if (rb_content[i] != RANGE_DATUM_FINITE)
return rb_content[i] == RANGE_DATUM_NEG_INF ? -1 : 1;
if (rb_kind[i] == PARTITION_RANGE_DATUM_MINVALUE)
return -1;
else if (rb_kind[i] == PARTITION_RANGE_DATUM_MAXVALUE)
return 1;
cmpval = DatumGetInt32(FunctionCall2Coll(&key->partsupfunc[i],
key->partcollation[i],
@ -2238,7 +2223,7 @@ partition_rbound_datum_cmp(PartitionKey key,
/*
* partition_bound_cmp
*
* Return whether the bound at offset in boundinfo is <=, =, >= the argument
* Return whether the bound at offset in boundinfo is <, =, or > the argument
* specified in *probe.
*/
static int32
@ -2259,7 +2244,7 @@ partition_bound_cmp(PartitionKey key, PartitionBoundInfo boundinfo,
case PARTITION_STRATEGY_RANGE:
{
RangeDatumContent *content = boundinfo->content[offset];
PartitionRangeDatumKind *kind = boundinfo->kind[offset];
if (probe_is_bound)
{
@ -2271,12 +2256,12 @@ partition_bound_cmp(PartitionKey key, PartitionBoundInfo boundinfo,
bool lower = boundinfo->indexes[offset] < 0;
cmpval = partition_rbound_cmp(key,
bound_datums, content, lower,
bound_datums, kind, lower,
(PartitionRangeBound *) probe);
}
else
cmpval = partition_rbound_datum_cmp(key,
bound_datums, content,
bound_datums, kind,
(Datum *) probe);
break;
}

2
src/backend/nodes/copyfuncs.c
View File

@ -4458,7 +4458,7 @@ _copyPartitionRangeDatum(const PartitionRangeDatum *from)
{
PartitionRangeDatum *newnode = makeNode(PartitionRangeDatum);
COPY_SCALAR_FIELD(infinite);
COPY_SCALAR_FIELD(kind);
COPY_NODE_FIELD(value);
COPY_LOCATION_FIELD(location);

2
src/backend/nodes/equalfuncs.c
View File

@ -2849,7 +2849,7 @@ _equalPartitionBoundSpec(const PartitionBoundSpec *a, const PartitionBoundSpec *
static bool
_equalPartitionRangeDatum(const PartitionRangeDatum *a, const PartitionRangeDatum *b)
{
COMPARE_SCALAR_FIELD(infinite);
COMPARE_SCALAR_FIELD(kind);
COMPARE_NODE_FIELD(value);
COMPARE_LOCATION_FIELD(location);

2
src/backend/nodes/outfuncs.c
View File

@ -3582,7 +3582,7 @@ _outPartitionRangeDatum(StringInfo str, const PartitionRangeDatum *node)
{
WRITE_NODE_TYPE("PARTITIONRANGEDATUM");
WRITE_BOOL_FIELD(infinite);
WRITE_ENUM_FIELD(kind, PartitionRangeDatumKind);
WRITE_NODE_FIELD(value);
WRITE_LOCATION_FIELD(location);
}

2
src/backend/nodes/readfuncs.c
View File

@ -2404,7 +2404,7 @@ _readPartitionRangeDatum(void)
{
READ_LOCALS(PartitionRangeDatum);
READ_BOOL_FIELD(infinite);
READ_ENUM_FIELD(kind, PartitionRangeDatumKind);
READ_NODE_FIELD(value);
READ_LOCATION_FIELD(location);

16
src/backend/parser/gram.y
View File

@ -2696,11 +2696,21 @@ range_datum_list:
;
PartitionRangeDatum:
UNBOUNDED
MINVALUE
{
PartitionRangeDatum *n = makeNode(PartitionRangeDatum);
n->infinite = true;
n->kind = PARTITION_RANGE_DATUM_MINVALUE;
n->value = NULL;
n->location = @1;
$$ = (Node *) n;
}
| MAXVALUE
{
PartitionRangeDatum *n = makeNode(PartitionRangeDatum);
n->kind = PARTITION_RANGE_DATUM_MAXVALUE;
n->value = NULL;
n->location = @1;
@ -2710,7 +2720,7 @@ PartitionRangeDatum:
{
PartitionRangeDatum *n = makeNode(PartitionRangeDatum);
n->infinite = false;
n->kind = PARTITION_RANGE_DATUM_VALUE;
n->value = $1;
n->location = @1;

34
src/backend/parser/parse_utilcmd.c
View File

@ -3365,7 +3365,6 @@ transformPartitionBound(ParseState *pstate, Relation parent,
*cell2;
int i,
j;
bool seen_unbounded;
if (spec->strategy != PARTITION_STRATEGY_RANGE)
ereport(ERROR,
@ -3382,39 +3381,6 @@ transformPartitionBound(ParseState *pstate, Relation parent,
(errcode(ERRCODE_INVALID_TABLE_DEFINITION),
errmsg("TO must specify exactly one value per partitioning column")));
/*
* Check that no finite value follows an UNBOUNDED item in either of
* lower and upper bound lists.
*/
seen_unbounded = false;
foreach(cell1, spec->lowerdatums)
{
PartitionRangeDatum *ldatum = castNode(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 = castNode(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))));
}
/* Transform all the constants */
i = j = 0;
result_spec->lowerdatums = result_spec->upperdatums = NIL;

12
src/backend/utils/adt/ruleutils.c
View File

@ -8715,8 +8715,10 @@ get_rule_expr(Node *node, deparse_context *context,
castNode(PartitionRangeDatum, lfirst(cell));
appendStringInfoString(buf, sep);
if (datum->infinite)
appendStringInfoString(buf, "UNBOUNDED");
if (datum->kind == PARTITION_RANGE_DATUM_MINVALUE)
appendStringInfoString(buf, "MINVALUE");
else if (datum->kind == PARTITION_RANGE_DATUM_MAXVALUE)
appendStringInfoString(buf, "MAXVALUE");
else
{
Const *val = castNode(Const, datum->value);
@ -8733,8 +8735,10 @@ get_rule_expr(Node *node, deparse_context *context,
castNode(PartitionRangeDatum, lfirst(cell));
appendStringInfoString(buf, sep);
if (datum->infinite)
appendStringInfoString(buf, "UNBOUNDED");
if (datum->kind == PARTITION_RANGE_DATUM_MINVALUE)
appendStringInfoString(buf, "MINVALUE");
else if (datum->kind == PARTITION_RANGE_DATUM_MAXVALUE)
appendStringInfoString(buf, "MAXVALUE");
else
{
Const *val = castNode(Const, datum->value);

2
src/include/catalog/catversion.h
View File

@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201706241
#define CATALOG_VERSION_NO 201707211
#endif

16
src/include/nodes/parsenodes.h
View File

@ -809,16 +809,24 @@ typedef struct PartitionBoundSpec
} PartitionBoundSpec;
/*
* PartitionRangeDatum - can be either a value or UNBOUNDED
* PartitionRangeDatum - one of the values in a range partition bound
*
* "value" is an A_Const in raw grammar output, a Const after analysis
* This can be MINVALUE, MAXVALUE or a specific bounded value.
*/
typedef enum PartitionRangeDatumKind
{
PARTITION_RANGE_DATUM_MINVALUE = -1, /* less than any other value */
PARTITION_RANGE_DATUM_VALUE = 0, /* a specific (bounded) value */
PARTITION_RANGE_DATUM_MAXVALUE = 1 /* greater than any other value */
} PartitionRangeDatumKind;
typedef struct PartitionRangeDatum
{
NodeTag type;
bool infinite; /* true if UNBOUNDED */
Node *value; /* null if UNBOUNDED */
PartitionRangeDatumKind kind;
Node *value; /* Const (or A_Const in raw tree), if kind is
* PARTITION_RANGE_DATUM_VALUE, else NULL */
int location; /* token location, or -1 if unknown */
} PartitionRangeDatum;

41
src/test/regress/expected/create_table.out
View File

@ -512,15 +512,8 @@ ERROR: FROM must specify exactly one value per partitioning column
CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM ('a') TO ('z', 1);
ERROR: TO must specify exactly one value per partitioning column
-- cannot specify null values in range bounds
CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM (null) TO (unbounded);
CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM (null) TO (maxvalue);
ERROR: cannot specify NULL in range bound
-- cannot specify finite values after UNBOUNDED has been specified
CREATE TABLE range_parted_multicol (a int, b int, c int) PARTITION BY RANGE (a, b, c);
CREATE TABLE fail_part PARTITION OF range_parted_multicol FOR VALUES FROM (1, UNBOUNDED, 1) TO (UNBOUNDED, 1, 1);
ERROR: cannot specify finite value after UNBOUNDED
LINE 1: ...ge_parted_multicol FOR VALUES FROM (1, UNBOUNDED, 1) TO (UNB...
^
DROP TABLE range_parted_multicol;
-- check if compatible with the specified parent
-- cannot create as partition of a non-partitioned table
CREATE TABLE unparted (
@ -578,11 +571,11 @@ ERROR: cannot create range partition with empty range
-- note that the range '[1, 1)' has no elements
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (1) TO (1);
ERROR: cannot create range partition with empty range
CREATE TABLE part0 PARTITION OF range_parted2 FOR VALUES FROM (unbounded) TO (1);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (unbounded) TO (2);
CREATE TABLE part0 PARTITION OF range_parted2 FOR VALUES FROM (minvalue) TO (1);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (minvalue) TO (2);
ERROR: partition "fail_part" would overlap partition "part0"
CREATE TABLE part1 PARTITION OF range_parted2 FOR VALUES FROM (1) TO (10);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (9) TO (unbounded);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (9) TO (maxvalue);
ERROR: partition "fail_part" would overlap partition "part1"
CREATE TABLE part2 PARTITION OF range_parted2 FOR VALUES FROM (20) TO (30);
CREATE TABLE part3 PARTITION OF range_parted2 FOR VALUES FROM (30) TO (40);
@ -595,18 +588,18 @@ CREATE TABLE range_parted3 (
a int,
b int
) PARTITION BY RANGE (a, (b+1));
CREATE TABLE part00 PARTITION OF range_parted3 FOR VALUES FROM (0, unbounded) TO (0, unbounded);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (0, unbounded) TO (0, 1);
CREATE TABLE part00 PARTITION OF range_parted3 FOR VALUES FROM (0, minvalue) TO (0, maxvalue);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (0, minvalue) TO (0, 1);
ERROR: partition "fail_part" would overlap partition "part00"
CREATE TABLE part10 PARTITION OF range_parted3 FOR VALUES FROM (1, unbounded) TO (1, 1);
CREATE TABLE part10 PARTITION OF range_parted3 FOR VALUES FROM (1, minvalue) TO (1, 1);
CREATE TABLE part11 PARTITION OF range_parted3 FOR VALUES FROM (1, 1) TO (1, 10);
CREATE TABLE part12 PARTITION OF range_parted3 FOR VALUES FROM (1, 10) TO (1, unbounded);
CREATE TABLE part12 PARTITION OF range_parted3 FOR VALUES FROM (1, 10) TO (1, maxvalue);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (1, 10) TO (1, 20);
ERROR: partition "fail_part" would overlap partition "part12"
-- cannot create a partition that says column b is allowed to range
-- from -infinity to +infinity, while there exist partitions that have
-- more specific ranges
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (1, unbounded) TO (1, unbounded);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (1, minvalue) TO (1, maxvalue);
ERROR: partition "fail_part" would overlap partition "part10"
-- check schema propagation from parent
CREATE TABLE parted (
@ -708,7 +701,7 @@ Number of partitions: 3 (Use \d+ to list them.)
-- check that we get the expected partition constraints
CREATE TABLE range_parted4 (a int, b int, c int) PARTITION BY RANGE (abs(a), abs(b), c);
CREATE TABLE unbounded_range_part PARTITION OF range_parted4 FOR VALUES FROM (UNBOUNDED, UNBOUNDED, UNBOUNDED) TO (UNBOUNDED, UNBOUNDED, UNBOUNDED);
CREATE TABLE unbounded_range_part PARTITION OF range_parted4 FOR VALUES FROM (MINVALUE, 0, 0) TO (MAXVALUE, 0, 0);
\d+ unbounded_range_part
Table "public.unbounded_range_part"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
@ -716,11 +709,11 @@ CREATE TABLE unbounded_range_part PARTITION OF range_parted4 FOR VALUES FROM (UN
a | integer | | | | plain | |
b | integer | | | | plain | |
c | integer | | | | plain | |
Partition of: range_parted4 FOR VALUES FROM (UNBOUNDED, UNBOUNDED, UNBOUNDED) TO (UNBOUNDED, UNBOUNDED, UNBOUNDED)
Partition of: range_parted4 FOR VALUES FROM (MINVALUE, 0, 0) TO (MAXVALUE, 0, 0)
Partition constraint: ((abs(a) IS NOT NULL) AND (abs(b) IS NOT NULL) AND (c IS NOT NULL))
DROP TABLE unbounded_range_part;
CREATE TABLE range_parted4_1 PARTITION OF range_parted4 FOR VALUES FROM (UNBOUNDED, UNBOUNDED, UNBOUNDED) TO (1, UNBOUNDED, UNBOUNDED);
CREATE TABLE range_parted4_1 PARTITION OF range_parted4 FOR VALUES FROM (MINVALUE, 0, 0) TO (1, MAXVALUE, 0);
\d+ range_parted4_1
Table "public.range_parted4_1"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
@ -728,10 +721,10 @@ CREATE TABLE range_parted4_1 PARTITION OF range_parted4 FOR VALUES FROM (UNBOUND
a | integer | | | | plain | |
b | integer | | | | plain | |
c | integer | | | | plain | |
Partition of: range_parted4 FOR VALUES FROM (UNBOUNDED, UNBOUNDED, UNBOUNDED) TO (1, UNBOUNDED, UNBOUNDED)
Partition of: range_parted4 FOR VALUES FROM (MINVALUE, 0, 0) TO (1, MAXVALUE, 0)
Partition constraint: ((abs(a) IS NOT NULL) AND (abs(b) IS NOT NULL) AND (c IS NOT NULL) AND (abs(a) <= 1))
CREATE TABLE range_parted4_2 PARTITION OF range_parted4 FOR VALUES FROM (3, 4, 5) TO (6, 7, UNBOUNDED);
CREATE TABLE range_parted4_2 PARTITION OF range_parted4 FOR VALUES FROM (3, 4, 5) TO (6, 7, MAXVALUE);
\d+ range_parted4_2
Table "public.range_parted4_2"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
@ -739,10 +732,10 @@ CREATE TABLE range_parted4_2 PARTITION OF range_parted4 FOR VALUES FROM (3, 4, 5
a | integer | | | | plain | |
b | integer | | | | plain | |
c | integer | | | | plain | |
Partition of: range_parted4 FOR VALUES FROM (3, 4, 5) TO (6, 7, UNBOUNDED)
Partition of: range_parted4 FOR VALUES FROM (3, 4, 5) TO (6, 7, MAXVALUE)
Partition constraint: ((abs(a) IS NOT NULL) AND (abs(b) IS NOT NULL) AND (c IS NOT NULL) AND ((abs(a) > 3) OR ((abs(a) = 3) AND (abs(b) > 4)) OR ((abs(a) = 3) AND (abs(b) = 4) AND (c >= 5))) AND ((abs(a) < 6) OR ((abs(a) = 6) AND (abs(b) <= 7))))
CREATE TABLE range_parted4_3 PARTITION OF range_parted4 FOR VALUES FROM (6, 8, UNBOUNDED) TO (9, UNBOUNDED, UNBOUNDED);
CREATE TABLE range_parted4_3 PARTITION OF range_parted4 FOR VALUES FROM (6, 8, MINVALUE) TO (9, MAXVALUE, 0);
\d+ range_parted4_3
Table "public.range_parted4_3"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
@ -750,7 +743,7 @@ CREATE TABLE range_parted4_3 PARTITION OF range_parted4 FOR VALUES FROM (6, 8, U
a | integer | | | | plain | |
b | integer | | | | plain | |
c | integer | | | | plain | |
Partition of: range_parted4 FOR VALUES FROM (6, 8, UNBOUNDED) TO (9, UNBOUNDED, UNBOUNDED)
Partition of: range_parted4 FOR VALUES FROM (6, 8, MINVALUE) TO (9, MAXVALUE, 0)
Partition constraint: ((abs(a) IS NOT NULL) AND (abs(b) IS NOT NULL) AND (c IS NOT NULL) AND ((abs(a) > 6) OR ((abs(a) = 6) AND (abs(b) >= 8))) AND (abs(a) <= 9))
DROP TABLE range_parted4;

6
src/test/regress/expected/inherit.out
View File

@ -1718,7 +1718,7 @@ create table part_10_20_cd partition of part_10_20 for values in ('cd');
create table part_21_30 partition of range_list_parted for values from (21) to (30) partition by list (b);
create table part_21_30_ab partition of part_21_30 for values in ('ab');
create table part_21_30_cd partition of part_21_30 for values in ('cd');
create table part_40_inf partition of range_list_parted for values from (40) to (unbounded) partition by list (b);
create table part_40_inf partition of range_list_parted for values from (40) to (maxvalue) partition by list (b);
create table part_40_inf_ab partition of part_40_inf for values in ('ab');
create table part_40_inf_cd partition of part_40_inf for values in ('cd');
create table part_40_inf_null partition of part_40_inf for values in (null);
@ -1831,12 +1831,12 @@ drop table range_list_parted;
-- check that constraint exclusion is able to cope with the partition
-- constraint emitted for multi-column range partitioned tables
create table mcrparted (a int, b int, c int) partition by range (a, abs(b), c);
create table mcrparted0 partition of mcrparted for values from (unbounded, unbounded, unbounded) to (1, 1, 1);
create table mcrparted0 partition of mcrparted for values from (minvalue, 0, 0) to (1, 1, 1);
create table mcrparted1 partition of mcrparted for values from (1, 1, 1) to (10, 5, 10);
create table mcrparted2 partition of mcrparted for values from (10, 5, 10) to (10, 10, 10);
create table mcrparted3 partition of mcrparted for values from (11, 1, 1) to (20, 10, 10);
create table mcrparted4 partition of mcrparted for values from (20, 10, 10) to (20, 20, 20);
create table mcrparted5 partition of mcrparted for values from (20, 20, 20) to (unbounded, unbounded, unbounded);
create table mcrparted5 partition of mcrparted for values from (20, 20, 20) to (maxvalue, 0, 0);
explain (costs off) select * from mcrparted where a = 0; -- scans mcrparted0
QUERY PLAN
------------------------------

130
src/test/regress/expected/insert.out
View File

@ -288,7 +288,7 @@ select tableoid::regclass, * from list_parted;
-- some more tests to exercise tuple-routing with multi-level partitioning
create table part_gg partition of list_parted for values in ('gg') partition by range (b);
create table part_gg1 partition of part_gg for values from (unbounded) to (1);
create table part_gg1 partition of part_gg for values from (minvalue) to (1);
create table part_gg2 partition of part_gg for values from (1) to (10) partition by range (b);
create table part_gg2_1 partition of part_gg2 for values from (1) to (5);
create table part_gg2_2 partition of part_gg2 for values from (5) to (10);
@ -439,12 +439,12 @@ drop table key_desc, key_desc_1;
-- check multi-column range partitioning expression enforces the same
-- constraint as what tuple-routing would determine it to be
create table mcrparted (a int, b int, c int) partition by range (a, abs(b), c);
create table mcrparted0 partition of mcrparted for values from (unbounded, unbounded, unbounded) to (1, unbounded, unbounded);
create table mcrparted1 partition of mcrparted for values from (2, 1, unbounded) to (10, 5, 10);
create table mcrparted2 partition of mcrparted for values from (10, 6, unbounded) to (10, unbounded, unbounded);
create table mcrparted0 partition of mcrparted for values from (minvalue, 0, 0) to (1, maxvalue, 0);
create table mcrparted1 partition of mcrparted for values from (2, 1, minvalue) to (10, 5, 10);
create table mcrparted2 partition of mcrparted for values from (10, 6, minvalue) to (10, maxvalue, 0);
create table mcrparted3 partition of mcrparted for values from (11, 1, 1) to (20, 10, 10);
create table mcrparted4 partition of mcrparted for values from (21, unbounded, unbounded) to (30, 20, unbounded);
create table mcrparted5 partition of mcrparted for values from (30, 21, 20) to (unbounded, unbounded, unbounded);
create table mcrparted4 partition of mcrparted for values from (21, minvalue, 0) to (30, 20, maxvalue);
create table mcrparted5 partition of mcrparted for values from (30, 21, 20) to (maxvalue, 0, 0);
-- routed to mcrparted0
insert into mcrparted values (0, 1, 1);
insert into mcrparted0 values (0, 1, 1);
@ -526,3 +526,121 @@ drop role regress_coldesc_role;
drop table inserttest3;
drop table brtrigpartcon;
drop function brtrigpartcon1trigf();
-- check multi-column range partitioning with minvalue/maxvalue constraints
create table mcrparted (a text, b int) partition by range(a, b);
create table mcrparted_lt_b partition of mcrparted for values from (minvalue, 0) to ('b', minvalue);
create table mcrparted_b partition of mcrparted for values from ('b', minvalue) to ('c', minvalue);
create table mcrparted_c_to_common partition of mcrparted for values from ('c', minvalue) to ('common', minvalue);
create table mcrparted_common_lt_0 partition of mcrparted for values from ('common', minvalue) to ('common', 0);
create table mcrparted_common_0_to_10 partition of mcrparted for values from ('common', 0) to ('common', 10);
create table mcrparted_common_ge_10 partition of mcrparted for values from ('common', 10) to ('common', maxvalue);
create table mcrparted_gt_common_lt_d partition of mcrparted for values from ('common', maxvalue) to ('d', minvalue);
create table mcrparted_ge_d partition of mcrparted for values from ('d', minvalue) to (maxvalue, 0);
\d+ mcrparted
Table "public.mcrparted"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition key: RANGE (a, b)
Partitions: mcrparted_b FOR VALUES FROM ('b', MINVALUE) TO ('c', MINVALUE),
mcrparted_common_0_to_10 FOR VALUES FROM ('common', 0) TO ('common', 10),
mcrparted_common_ge_10 FOR VALUES FROM ('common', 10) TO ('common', MAXVALUE),
mcrparted_common_lt_0 FOR VALUES FROM ('common', MINVALUE) TO ('common', 0),
mcrparted_c_to_common FOR VALUES FROM ('c', MINVALUE) TO ('common', MINVALUE),
mcrparted_ge_d FOR VALUES FROM ('d', MINVALUE) TO (MAXVALUE, 0),
mcrparted_gt_common_lt_d FOR VALUES FROM ('common', MAXVALUE) TO ('d', MINVALUE),
mcrparted_lt_b FOR VALUES FROM (MINVALUE, 0) TO ('b', MINVALUE)
\d+ mcrparted_lt_b
Table "public.mcrparted_lt_b"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM (MINVALUE, 0) TO ('b', MINVALUE)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a < 'b'::text))
\d+ mcrparted_b
Table "public.mcrparted_b"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('b', MINVALUE) TO ('c', MINVALUE)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a >= 'b'::text) AND (a < 'c'::text))
\d+ mcrparted_c_to_common
Table "public.mcrparted_c_to_common"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('c', MINVALUE) TO ('common', MINVALUE)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a >= 'c'::text) AND (a < 'common'::text))
\d+ mcrparted_common_lt_0
Table "public.mcrparted_common_lt_0"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('common', MINVALUE) TO ('common', 0)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a = 'common'::text) AND (b < 0))
\d+ mcrparted_common_0_to_10
Table "public.mcrparted_common_0_to_10"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('common', 0) TO ('common', 10)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a = 'common'::text) AND (b >= 0) AND (b < 10))
\d+ mcrparted_common_ge_10
Table "public.mcrparted_common_ge_10"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('common', 10) TO ('common', MAXVALUE)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a = 'common'::text) AND (b >= 10))
\d+ mcrparted_gt_common_lt_d
Table "public.mcrparted_gt_common_lt_d"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('common', MAXVALUE) TO ('d', MINVALUE)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a > 'common'::text) AND (a < 'd'::text))
\d+ mcrparted_ge_d
Table "public.mcrparted_ge_d"
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
--------+---------+-----------+----------+---------+----------+--------------+-------------
a | text | | | | extended | |
b | integer | | | | plain | |
Partition of: mcrparted FOR VALUES FROM ('d', MINVALUE) TO (MAXVALUE, 0)
Partition constraint: ((a IS NOT NULL) AND (b IS NOT NULL) AND (a >= 'd'::text))
insert into mcrparted values ('aaa', 0), ('b', 0), ('bz', 10), ('c', -10),
('comm', -10), ('common', -10), ('common', 0), ('common', 10),
('commons', 0), ('d', -10), ('e', 0);
select tableoid::regclass, * from mcrparted order by a, b;
tableoid | a | b
--------------------------+---------+-----
mcrparted_lt_b | aaa | 0
mcrparted_b | b | 0
mcrparted_b | bz | 10
mcrparted_c_to_common | c | -10
mcrparted_c_to_common | comm | -10
mcrparted_common_lt_0 | common | -10
mcrparted_common_0_to_10 | common | 0
mcrparted_common_ge_10 | common | 10
mcrparted_gt_common_lt_d | commons | 0
mcrparted_ge_d | d | -10
mcrparted_ge_d | e | 0
(11 rows)
drop table mcrparted;

31
src/test/regress/sql/create_table.sql
View File

@ -483,12 +483,7 @@ CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM ('a', 1) TO ('z
CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM ('a') TO ('z', 1);
-- cannot specify null values in range bounds
CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM (null) TO (unbounded);
-- cannot specify finite values after UNBOUNDED has been specified
CREATE TABLE range_parted_multicol (a int, b int, c int) PARTITION BY RANGE (a, b, c);
CREATE TABLE fail_part PARTITION OF range_parted_multicol FOR VALUES FROM (1, UNBOUNDED, 1) TO (UNBOUNDED, 1, 1);
DROP TABLE range_parted_multicol;
CREATE TABLE fail_part PARTITION OF range_parted FOR VALUES FROM (null) TO (maxvalue);
-- check if compatible with the specified parent
@ -542,10 +537,10 @@ CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (1) TO (0);
-- note that the range '[1, 1)' has no elements
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (1) TO (1);
CREATE TABLE part0 PARTITION OF range_parted2 FOR VALUES FROM (unbounded) TO (1);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (unbounded) TO (2);
CREATE TABLE part0 PARTITION OF range_parted2 FOR VALUES FROM (minvalue) TO (1);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (minvalue) TO (2);
CREATE TABLE part1 PARTITION OF range_parted2 FOR VALUES FROM (1) TO (10);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (9) TO (unbounded);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (9) TO (maxvalue);
CREATE TABLE part2 PARTITION OF range_parted2 FOR VALUES FROM (20) TO (30);
CREATE TABLE part3 PARTITION OF range_parted2 FOR VALUES FROM (30) TO (40);
CREATE TABLE fail_part PARTITION OF range_parted2 FOR VALUES FROM (10) TO (30);
@ -557,18 +552,18 @@ CREATE TABLE range_parted3 (
b int
) PARTITION BY RANGE (a, (b+1));
CREATE TABLE part00 PARTITION OF range_parted3 FOR VALUES FROM (0, unbounded) TO (0, unbounded);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (0, unbounded) TO (0, 1);
CREATE TABLE part00 PARTITION OF range_parted3 FOR VALUES FROM (0, minvalue) TO (0, maxvalue);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (0, minvalue) TO (0, 1);
CREATE TABLE part10 PARTITION OF range_parted3 FOR VALUES FROM (1, unbounded) TO (1, 1);
CREATE TABLE part10 PARTITION OF range_parted3 FOR VALUES FROM (1, minvalue) TO (1, 1);
CREATE TABLE part11 PARTITION OF range_parted3 FOR VALUES FROM (1, 1) TO (1, 10);
CREATE TABLE part12 PARTITION OF range_parted3 FOR VALUES FROM (1, 10) TO (1, unbounded);
CREATE TABLE part12 PARTITION OF range_parted3 FOR VALUES FROM (1, 10) TO (1, maxvalue);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (1, 10) TO (1, 20);
-- cannot create a partition that says column b is allowed to range
-- from -infinity to +infinity, while there exist partitions that have
-- more specific ranges
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (1, unbounded) TO (1, unbounded);
CREATE TABLE fail_part PARTITION OF range_parted3 FOR VALUES FROM (1, minvalue) TO (1, maxvalue);
-- check schema propagation from parent
@ -626,14 +621,14 @@ CREATE TABLE part_c_1_10 PARTITION OF part_c FOR VALUES FROM (1) TO (10);
-- check that we get the expected partition constraints
CREATE TABLE range_parted4 (a int, b int, c int) PARTITION BY RANGE (abs(a), abs(b), c);
CREATE TABLE unbounded_range_part PARTITION OF range_parted4 FOR VALUES FROM (UNBOUNDED, UNBOUNDED, UNBOUNDED) TO (UNBOUNDED, UNBOUNDED, UNBOUNDED);
CREATE TABLE unbounded_range_part PARTITION OF range_parted4 FOR VALUES FROM (MINVALUE, 0, 0) TO (MAXVALUE, 0, 0);
\d+ unbounded_range_part
DROP TABLE unbounded_range_part;
CREATE TABLE range_parted4_1 PARTITION OF range_parted4 FOR VALUES FROM (UNBOUNDED, UNBOUNDED, UNBOUNDED) TO (1, UNBOUNDED, UNBOUNDED);
CREATE TABLE range_parted4_1 PARTITION OF range_parted4 FOR VALUES FROM (MINVALUE, 0, 0) TO (1, MAXVALUE, 0);
\d+ range_parted4_1
CREATE TABLE range_parted4_2 PARTITION OF range_parted4 FOR VALUES FROM (3, 4, 5) TO (6, 7, UNBOUNDED);
CREATE TABLE range_parted4_2 PARTITION OF range_parted4 FOR VALUES FROM (3, 4, 5) TO (6, 7, MAXVALUE);
\d+ range_parted4_2
CREATE TABLE range_parted4_3 PARTITION OF range_parted4 FOR VALUES FROM (6, 8, UNBOUNDED) TO (9, UNBOUNDED, UNBOUNDED);
CREATE TABLE range_parted4_3 PARTITION OF range_parted4 FOR VALUES FROM (6, 8, MINVALUE) TO (9, MAXVALUE, 0);
\d+ range_parted4_3
DROP TABLE range_parted4;

6
src/test/regress/sql/inherit.sql
View File

@ -623,7 +623,7 @@ create table part_10_20_cd partition of part_10_20 for values in ('cd');
create table part_21_30 partition of range_list_parted for values from (21) to (30) partition by list (b);
create table part_21_30_ab partition of part_21_30 for values in ('ab');
create table part_21_30_cd partition of part_21_30 for values in ('cd');
create table part_40_inf partition of range_list_parted for values from (40) to (unbounded) partition by list (b);
create table part_40_inf partition of range_list_parted for values from (40) to (maxvalue) partition by list (b);
create table part_40_inf_ab partition of part_40_inf for values in ('ab');
create table part_40_inf_cd partition of part_40_inf for values in ('cd');
create table part_40_inf_null partition of part_40_inf for values in (null);
@ -647,12 +647,12 @@ drop table range_list_parted;
-- check that constraint exclusion is able to cope with the partition
-- constraint emitted for multi-column range partitioned tables
create table mcrparted (a int, b int, c int) partition by range (a, abs(b), c);
create table mcrparted0 partition of mcrparted for values from (unbounded, unbounded, unbounded) to (1, 1, 1);
create table mcrparted0 partition of mcrparted for values from (minvalue, 0, 0) to (1, 1, 1);
create table mcrparted1 partition of mcrparted for values from (1, 1, 1) to (10, 5, 10);
create table mcrparted2 partition of mcrparted for values from (10, 5, 10) to (10, 10, 10);
create table mcrparted3 partition of mcrparted for values from (11, 1, 1) to (20, 10, 10);
create table mcrparted4 partition of mcrparted for values from (20, 10, 10) to (20, 20, 20);
create table mcrparted5 partition of mcrparted for values from (20, 20, 20) to (unbounded, unbounded, unbounded);
create table mcrparted5 partition of mcrparted for values from (20, 20, 20) to (maxvalue, 0, 0);
explain (costs off) select * from mcrparted where a = 0; -- scans mcrparted0
explain (costs off) select * from mcrparted where a = 10 and abs(b) < 5; -- scans mcrparted1
explain (costs off) select * from mcrparted where a = 10 and abs(b) = 5; -- scans mcrparted1, mcrparted2

39
src/test/regress/sql/insert.sql
View File

@ -169,7 +169,7 @@ select tableoid::regclass, * from list_parted;
-- some more tests to exercise tuple-routing with multi-level partitioning
create table part_gg partition of list_parted for values in ('gg') partition by range (b);
create table part_gg1 partition of part_gg for values from (unbounded) to (1);
create table part_gg1 partition of part_gg for values from (minvalue) to (1);
create table part_gg2 partition of part_gg for values from (1) to (10) partition by range (b);
create table part_gg2_1 partition of part_gg2 for values from (1) to (5);
create table part_gg2_2 partition of part_gg2 for values from (5) to (10);
@ -293,12 +293,12 @@ drop table key_desc, key_desc_1;
-- check multi-column range partitioning expression enforces the same
-- constraint as what tuple-routing would determine it to be
create table mcrparted (a int, b int, c int) partition by range (a, abs(b), c);
create table mcrparted0 partition of mcrparted for values from (unbounded, unbounded, unbounded) to (1, unbounded, unbounded);
create table mcrparted1 partition of mcrparted for values from (2, 1, unbounded) to (10, 5, 10);
create table mcrparted2 partition of mcrparted for values from (10, 6, unbounded) to (10, unbounded, unbounded);
create table mcrparted0 partition of mcrparted for values from (minvalue, 0, 0) to (1, maxvalue, 0);
create table mcrparted1 partition of mcrparted for values from (2, 1, minvalue) to (10, 5, 10);
create table mcrparted2 partition of mcrparted for values from (10, 6, minvalue) to (10, maxvalue, 0);
create table mcrparted3 partition of mcrparted for values from (11, 1, 1) to (20, 10, 10);
create table mcrparted4 partition of mcrparted for values from (21, unbounded, unbounded) to (30, 20, unbounded);
create table mcrparted5 partition of mcrparted for values from (30, 21, 20) to (unbounded, unbounded, unbounded);
create table mcrparted4 partition of mcrparted for values from (21, minvalue, 0) to (30, 20, maxvalue);
create table mcrparted5 partition of mcrparted for values from (30, 21, 20) to (maxvalue, 0, 0);
-- routed to mcrparted0
insert into mcrparted values (0, 1, 1);
@ -360,3 +360,30 @@ drop role regress_coldesc_role;
drop table inserttest3;
drop table brtrigpartcon;
drop function brtrigpartcon1trigf();
-- check multi-column range partitioning with minvalue/maxvalue constraints
create table mcrparted (a text, b int) partition by range(a, b);
create table mcrparted_lt_b partition of mcrparted for values from (minvalue, 0) to ('b', minvalue);
create table mcrparted_b partition of mcrparted for values from ('b', minvalue) to ('c', minvalue);
create table mcrparted_c_to_common partition of mcrparted for values from ('c', minvalue) to ('common', minvalue);
create table mcrparted_common_lt_0 partition of mcrparted for values from ('common', minvalue) to ('common', 0);
create table mcrparted_common_0_to_10 partition of mcrparted for values from ('common', 0) to ('common', 10);
create table mcrparted_common_ge_10 partition of mcrparted for values from ('common', 10) to ('common', maxvalue);
create table mcrparted_gt_common_lt_d partition of mcrparted for values from ('common', maxvalue) to ('d', minvalue);
create table mcrparted_ge_d partition of mcrparted for values from ('d', minvalue) to (maxvalue, 0);
\d+ mcrparted
\d+ mcrparted_lt_b
\d+ mcrparted_b
\d+ mcrparted_c_to_common
\d+ mcrparted_common_lt_0
\d+ mcrparted_common_0_to_10
\d+ mcrparted_common_ge_10
\d+ mcrparted_gt_common_lt_d
\d+ mcrparted_ge_d
insert into mcrparted values ('aaa', 0), ('b', 0), ('bz', 10), ('c', -10),
('comm', -10), ('common', -10), ('common', 0), ('common', 10),
('commons', 0), ('d', -10), ('e', 0);
select tableoid::regclass, * from mcrparted order by a, b;
drop table mcrparted;

1
src/tools/pgindent/typedefs.list
View File

@ -1562,6 +1562,7 @@ PartitionKey
PartitionListValue
PartitionRangeBound
PartitionRangeDatum
PartitionRangeDatumKind
PartitionSpec
PartitionedChildRelInfo
PasswordType