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  1. create table table1(id integer primary key autoincrement, name varchar(20),text varchar(20),user_id integer);
  2. create table table2(id integer primary key autoincrement, text varchar(20),table1_id integer,read integer);
  3. insert into table1(name,user_id) values('test1',1);
  4. insert into table2(text,table1_id,read) values('test_text1',1,1);
  5. insert into table2(text,table1_id,read) values('test_text2',1,1);
  6. insert into table2(text,table1_id,read) values('test_text3',1,0);
  7. insert into table2(text,table1_id,read) values('test_text4',1,0);
  8. select `a`.`name`,count(`b`.`id`) from `table1` as `a` left join `table2` as `b` on `a`.`id` = `b`.`table1_id` where `a`.`user_id` = 1;
Success #stdin #stdout 0s 3360KB
stdin
Standard input is empty
stdout
test1|4