Exist

Exist method

If you only want to know if some record exists, you could use Exist, it’s better performance than Get.

1. has, err := testEngine.Exist(new(RecordExist))
2. // SELECT * FROM record_exist LIMIT 1

1. has, err = testEngine.Exist(&RecordExist{
2. Name: "test1",
3. })
4. // SELECT * FROM record_exist WHERE name = ? LIMIT 1

1. has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{})
2. // SELECT * FROM record_exist WHERE name = ? LIMIT 1

1. has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist()
2. // select * from record_exist where name = ?

1. has, err = testEngine.Table("record_exist").Exist()
2. // SELECT * FROM record_exist LIMIT 1

1. has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist()
2. // SELECT * FROM record_exist WHERE name = ? LIMIT 1