partition p_592 values (592), partition p_593 values (593), partition p_594 values (594), partition p_595 values (595), partition p_596 values (596), partition p_597 values (597), partition p_598 values (598), partition p_599 values (599), partition p_other values (DEFAULT) );...
批量时使用Lists.partition(list,num) 场景:当我们通过一堆ID,批量查数据库,并写入文件时,oracle数据库的 in(xx,xx,xx,xx..)里面的个数不能超过1000,超过1000则会报错,我们就可以批量去做这件事; publicstaticvoidmain(String[] args) { List<String> list =Lists.newArrayList();for(inti = 0; i < 21...
AI代码解释 postgres=# create tabletpart_hash(a int primary key,b text)partition byhash(a)configuration(modulus5);CREATETABLEpostgres=# \d+tpart_hash Partitioned table"public.tpart_hash"Column|Type|Collation|Nullable|Default|Storage|Stats target|Description---+---+---+---+---+---+---+...
以list字段为分区关键字段，进行分区。
oracle 创建范围列表(Rang-list)组合分区 创建分区: create table GPS_POSITION ( ID NVARCHAR2(32) not null, GPSTIME DATE, LONGITUDE NUMBER, LATITUDE NUMBER, SPEED NVARCHAR2(16), CITYID NVARCHAR2(20) ) partition by range(gpstime) subpartition by list (cityid)...
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在split partition时，如果所有索引都是local index并且新split出来的partition为空时，oracle不需要rebuild index，这就是fast split。但是当新的partition非空时，则index处于unusable状态，需要rebuild index。而在rebuild index这段时间内，如果有SQL进来，就会出问题了。oracle并没有给出一个安全的split ...
CREATE TABLE employees ( id INT NOT NULL, fname VARCHAR(30), lname VARCHAR(30), hired DATE NOT NULL DEFAULT '1970-01-01', separated DATE NOT NULL DEFAULT '9999-12-31', job_code INT, store_id INT ) PARTITION BY LIST(store_id) ( PARTITION pNorth VALUES IN (3,5,6,9,17), PART...
Before Oracle inserts rows into a table, the table only has an initial extent with a number of free blocks allocated to it. Otherwise the table is empty. Therefore, you might consider preallocating space for the table in a free list group. This guarantees an optimal allocation of extents con...
Oracle Database - Enterprise Edition - Version 12.1.0.2 and later: ORA-1 or Wrong Results for Parallel INSERT in List/Hash Partitioned Table with Non-Unique Index