Such an array

 

{type: 1, id: 1,... }, 
{type: 1, id: 2,... } 
. 
{type: 2, id: 1,... }, 
{type: 2, id: 2,... }, 
. , 
{type: 3, id: 1,... }, 
{type: 3, id: 2,... }, 
{type: 3, id: 3,... }, 
. 
. 
] 

Array is larger, how to effectively to the type and id
query?

CodePudding user response:

Thought of the junction

CodePudding user response:

Then I pick up a minute?