Home > Article > Backend Development > Thinkphp where() method to find data optimization
The first way
<code>$bank = array(12) { ["bank_id"] => string(1) "9" ["bank_type"] => string(1) "1" ["bank_operator_id"] => string(1) "2" ["bank_operator_name"] => string(9) "唐新朋" ["bank_operator_type"] => string(1) "3" ["bank_accept_id"] => string(1) "1" ["bank_accept_name"] => string(9) "汪昌宁" ["bank_accept_type"] => string(1) "1" ["bank_sum"] => string(5) "50000" ["bank_mark"] => string(3) "500" ["bank_confirm"] => string(1) "0" ["bank_create_time"] => string(10) "1467113725" } $m->where($bank)->setField('bank_confirm','1');</code>
The second way
<code>$bank = array(12) { ["bank_id"] => string(1) "9" ["bank_type"] => string(1) "1" ["bank_operator_id"] => string(1) "2" ["bank_operator_name"] => string(9) "唐新朋" ["bank_operator_type"] => string(1) "3" ["bank_accept_id"] => string(1) "1" ["bank_accept_name"] => string(9) "汪昌宁" ["bank_accept_type"] => string(1) "1" ["bank_sum"] => string(5) "50000" ["bank_mark"] => string(3) "500" ["bank_confirm"] => string(1) "0" ["bank_create_time"] => string(10) "1467113725" } $condition['bank_id'] = $bank["bank_id"]; $m->where($condition)->setField('bank_confirm','1');</code>
Both methods can achieve what I want but
Will the first method put pressure on the server or database
The second option is to write this extra line of code
<code>$condition['bank_id'] = $bank["bank_id"];</code>
Tangled (⊙﹏⊙)
The first way
<code>$bank = array(12) { ["bank_id"] => string(1) "9" ["bank_type"] => string(1) "1" ["bank_operator_id"] => string(1) "2" ["bank_operator_name"] => string(9) "唐新朋" ["bank_operator_type"] => string(1) "3" ["bank_accept_id"] => string(1) "1" ["bank_accept_name"] => string(9) "汪昌宁" ["bank_accept_type"] => string(1) "1" ["bank_sum"] => string(5) "50000" ["bank_mark"] => string(3) "500" ["bank_confirm"] => string(1) "0" ["bank_create_time"] => string(10) "1467113725" } $m->where($bank)->setField('bank_confirm','1');</code>
The second way
<code>$bank = array(12) { ["bank_id"] => string(1) "9" ["bank_type"] => string(1) "1" ["bank_operator_id"] => string(1) "2" ["bank_operator_name"] => string(9) "唐新朋" ["bank_operator_type"] => string(1) "3" ["bank_accept_id"] => string(1) "1" ["bank_accept_name"] => string(9) "汪昌宁" ["bank_accept_type"] => string(1) "1" ["bank_sum"] => string(5) "50000" ["bank_mark"] => string(3) "500" ["bank_confirm"] => string(1) "0" ["bank_create_time"] => string(10) "1467113725" } $condition['bank_id'] = $bank["bank_id"]; $m->where($condition)->setField('bank_confirm','1');</code>
Both methods can achieve what I want but
Will the first method put pressure on the server or database
The second option is to write this extra line of code
<code>$condition['bank_id'] = $bank["bank_id"];</code>
Tangled (⊙﹏⊙)
Thanks for the invitation. I don’t know if bank_id
in your query is unique. If it is the only second condition, it will be enough. Although many of your first conditions can be queried with high accuracy, I think they are all of the string
type. If they all have indexes, it’s fine. If some of them don’t have indexes, and one condition is enough, I recommend the second condition.
Thank you for the invitation. As expected, bank_id must be the unique key or primary key, so it must be $m->where(array('bank_id' => $bank['bank_id']))->setField('bank_confirm','1');
The person above has answered your question correctly. If bank_id is the unique key, you can query with only one condition
Theoretically, the more query conditions, the more filtered data, and the faster the query. But just have a primary key or index field, add limit=1, and the efficiency is good enough.