[英]MYSQL INSERT query based on SELECT query with LIMIT restrictions
SELECT query SELECT查询
SELECT a. * , d.agent_id, COUNT( d.driver_id ) AS `noofdrivers`
FROM ta_agent a, ta_drivers d
WHERE a.agent_id = d.agent_id
AND a.agent_id = ".$agent_id."
GROUP BY a.agent_id
SELECT query returns this below records SELECT查询返回以下记录
agent_id agent_name company_name pricing_plan noofdrivers
-------- ---------- ----------- ------------ -----------
3 CCC ZZZ 8499 2
2 BBB YYY 3499 3
DRIVER DB TABLE 驱动程序表
agent_id driver_id driver_name
-------- ---------- -----------
2 1 EEE
2 2 FFF
2 3 GGG
1 4 HHH
3 5 III
3 6 JJJ
how do I INSERT the records based on above SELECT query results. 如何根据上述SELECT查询结果插入记录。 if pricing_plan
is 3499 agent_id
2 can add only 5 drivers. 如果pricing_plan
是3499, agent_id
2只能添加5个驱动程序。 Now, agent_id
2 have 3 drivers. 现在, agent_id
2具有3个驱动程序。 So, still he can add 2 drivers only. 因此,他仍然只能添加2个驱动程序。 How to do this limit restriction in mysql query? 如何在mysql查询中执行此限制限制?
Try this, 尝试这个,
insert into driver(driver_id, agent_id, driver_name)
select ins.driver_id, ins.agent_id, ins.driver_name
from (select 7 as driver_id, 2 as agent_id, 'KKK' as driver_name) ins
where (select count(*)
from driver d, agent a
where d.agent_id=a.agent_id and a.agent_id=ins.agent_id and a.pricing_plan=3499)<5;
In given query, you'l have to place variables $driver_id
, $agent_id
and $driver_name
for values 7
, 2
and 'KKK'
respectively. 在给定的查询,you'l必须把变量$driver_id
, $agent_id
和$driver_name
为值7
, 2
和'KKK'
分别。
so, it will look like, 因此,它看起来像
$sql="insert into driver(driver_id, agent_id, driver_name)
select ins.driver_id, ins.agent_id, ins.driver_name
from (select $driver_id as driver_id, $agent_id as agent_id, $driver_name as driver_name) ins
where (select count(*)
from driver d, agent a
where d.agent_id=a.agent_id and a.agent_id=ins.agent_id and a.pricing_plan=3499)<5";
Here is DEMO SQLFiddle 这是DEMO SQLFiddle
You could use something like this: 您可以使用如下形式:
insert into ta_drivers(agent_id, driver_id, driver_name) SELECT (agent_id, driver_id, driver_name) FROM dual where ((SELECT a. * , d.agent_id, COUNT( d.driver_id ) AS `noofdrivers`
FROM ta_agent a, ta_drivers d
WHERE a.agent_id = d.agent_id
AND pricing_plan=3499 and a.agent_id = ".$agent_id."
GROUP BY a.agent_id)<5);
You have to check the query because is not OK. 您必须检查查询,因为这样不行。 but in theory: 但理论上:
insert into table select from dual where ((select count(*) condition) <5);
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