如何在grails中獲取結果集數據

Question

以下是我的查詢：

def getdata1 = sql.rows("select student_id,school_grade_class_id from class_assign")

如何從getdata1獲取student_id ？

更新：

def getdata1 = sql.rows("select student_id,school_grade_class_id from class_assign")


def getdata2 = sql.rows("select class_id,class_name,school_grade_id from class_rel where school_grade_class_id=**x**")

我應該從getdata1將x替換alue of school_grade_class_id結果集。 我該怎么辦？

Answer 1

你可以這樣做：

getdata1.each{
    println it.student_id
}

要么

sql.eachRow("select student_id,school_grade_class_id from class_assign", {
   println it.student_id
})