I have table Customer_address_tx having structure below..
cust_id_pk BIGINT
comm_fk BIGINT
Now I want to update comm_fk with null where comm_fk is zero, Such records lies in range 280000000 to 320000000(cust_id_pk)
在上述范围内，有500万条这样的记录，其中comm_fk = 0，我想用null更新
My Update query
db2“更新Customer_address_tx set comm_fk = null其中comm_fk = 0”
为了有效地运行上述查询，我将上述更新语句分解为多个更新语句，范围为280000000到320000000（cust_id_pk），每个 5000
db2“更新Customer_address_tx set comm_fk = null其中comm_fk = 0且cust_id_pk介于280000000和280005000之间”
db2“更新Customer_address_tx set comm_fk = null其中comm_fk = 0且cust_id_pk介于280005001和280010000之间”
即可。 。 。
是正确的方法..？
欢迎任何其他方法......