range 分区 range_partitions 的语法如下: PARTITION BY RANGE (column[, column ]...) [ INTERVAL ( expr ) [ STORE IN ( tablespace [, tablespace]...) ]] ( PARTITION [ partition ] range_values_clause table_partition_description [, PARTITION [ partition ] range_values_clause table_partition_de...
ON PARTITIONS ( { <partition_number_expression> | <range> } [ ,...n ]) 指定对其应用 DATA_COMPRESSION 设置的分区。如果表未分区,则 ON PARTITIONS 参数将生成错误。如果不提供 ON PARTITIONS 子句,则 DATA_COMPRESSION 选项将应用于分区表的所有分区。 可以按以下方式指定 <partition_number_expression>: ...
obclient>CREATETABLEtbl4(col1INTPRIMARYKEY,col2INT)PARTITIONBYHASH(col1)PARTITIONS8;Query OK,0rowsaffected 创建一级分区为 Range 分区,二级分区为 Hash 分区的表。 obclient>CREATETABLEtbl5(col1INT,col2INT,col3INT)PARTITIONBYRANGE(col1)SUBPARTITIONBYHASH(col2)SUBPARTITIONS5(PARTITIONp0VALUESLESS TH...
--Create integer partition function for 15,000 partitions.DECLARE@IntegerPartitionFunctionnvarchar(max) = N'CREATE PARTITION FUNCTION IntegerPartitionFunction (int) AS RANGE RIGHT FOR VALUES (';DECLARE@iint=1; WHILE @i < 14999BEGINSET@IntegerPartitionFunction +=CAST(@iasnvarchar(10)) + N', ';...
[ONPARTITIONS( {partition_number_expression| range } [ , ...n ] ) ]<on_option>::=partition_scheme_name(column_name) |filegroup_name|"default"<filter_expression>::=column_nameIN( constant [ , ...n ] |column_name{IS|ISNOT| = |<>| != | > | >= | !> |< | <= | !< } ...
Here is the syntax to use the PARTITION BY clause to create a table with partitions in PostgreSQL 1. To create a range partitioned table: CREATE TABLE table_name table_definition PARTITION BY RANGE (expression); Example CREATE TABLE city ( id int4 NOT NULL PRIMARY KEY, name varchar(30)...
ON PARTITIONS ( { <partition_number_expression> | <range> } [ ,...n ]) 指定对其应用 DATA_COMPRESSION 设置的分区。如果表未分区,则 ON PARTITIONS 参数将生成错误。如果不提供 ON PARTITIONS 子句,则 DATA_COMPRESSION 选项将应用于分区表的所有分区。 可以按以下方式指定 <partition_number_expression>: ...
Value range: 0 to 3. The default value is 0. MAX_BATCHROW Specifies the maximum number of rows in a storage unit during data loading. The parameter is only valid for column-store tables. Value range: 10000 to 60000 PARTIAL_CLUSTER_ROWS Specifies the number of records to be partially ...
(range_partitions::=, list_partitions::=, hash_partitions::=, composite_range_partitions::=, composite_list_partitions::= composite_hash_partitions::=, reference_partitioning::=, system_partitioning::=, consistent_hash_partitions::=, consistent_hash_with_subpartitions::=, partitionset_clauses::...
createtablet1(c1intprimarykey,c2int)partitionbyhash(c1)partitions8; 创建一级分区为 Range 分区,二级分区为 Key 分区的表。 createtablet1(c1int,c2int,c3int)partitionbyrange(c1)subpartitionbykey(c2,c3)subpartitions5(partitionp0valuesless than(0),partitionp1valuesless than(100)); ...