如何在android中比较第一个表ID和第二个表类别ID并显示数据category_id明智的数据库

Question

I have create two table like this
** i have click Freedom Fighters only Mahatma Gandhi then i have click Sports Person only show Sania Mirza**

category:ID | NAME
people:ID|NAME|CATEGORY_ID

My first table data

"1" "Freedom Fighters"
"2" "Sports Person"
"3" "Scientist"
"4" "Politicians"
"5" "Celebrities"

My second table data

 NAME               category_id
"Mahatma Gandhi"    "1"
"Sania Mirza"       "2"
"C. V. Raman"       "3"
"Swami Vivekananda" "4"

**My query is **

 Cursor cursor = db.rawQuery("select * from people where category_id = (select id from category)", null);

But only show the first row of thesecond table

Answer 1

select * from people where category_id in (select id from category)

在这个查询中你得到你需要的......