oceanbase/docs/docs-cn/7.developer-guide-1/4.create-and-manage-database-objects/4.create-and-manage-table-groups/2.specify-a-table-group-when-creating-a-table.md

创建表时指定表组

表组可以在创建表的时候指定，SQL 查询语法格式如下：

CREATE TABLE table_name ( 
        column_name data_type [, column_name data_type] 
) TABLEGROUP tablegroup_name ; 

示例：创建表时指定表组。

如下创建订单表和订单明细表，业务上这两个表经常要关联查询，所以建议放到同一个表组中。

create table ordr (
    o_w_id int
    , o_d_id int
    , o_id int
    , o_c_id int
    , o_carrier_id int
    , o_ol_cnt int
    , o_all_local int
    , o_entry_d date
    , index iordr(o_w_id, o_d_id, o_c_id, o_id) local
    , primary key ( o_w_id, o_d_id, o_id )
)tablegroup tpcc_group partition by hash(o_w_id) partitions 6;
create table ordl (
    ol_w_id int
    , ol_d_id int
    , ol_o_id int
    , ol_number int
    , ol_delivery_d date
    , ol_amount decimal(6, 2)
    , ol_i_id int
    , ol_supply_w_id int
    , ol_quantity int
    , ol_dist_info char(24)
    , primary key (ol_w_id, ol_d_id, ol_o_id, ol_number )
)tablegroup tpcc_group partition by hash(ol_w_id) partitions 6;