Oracle PL/SQL选择变量

Question

我试图在SQL Developer中运行以下查询,但我收到一个错误.我试图声明两个局部变量(var_num1和payDate),然后设置变量.有谁知道我做错了什么？我知道Oracle SQL与SQL Server有点不同.

DECLARE
  var_num1 number; 
  payDate date;
 BEGIN 
  var_num1 := 100; 
  payDate := '10/1/2013'
  BEGIN 
    SELECT * FROM Paycode WHERE PaycodeID = var_num1 and PaycodeDate = payDate;
  End;
END; 

---

Error report:
ORA-06550: line 6, column 2:
PLS-00428: an INTO clause is expected in this SELECT statement
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

Answer 1

在PL/SQL中不能使用SELECT而不使用INTO子句.SELECT的输出必须存储在某处.例如.表或变量或者记录.请参阅下面的示例如何将SELECT语句的结果存储到记录中.

DECLARE
  var_num1 number; 
  payDate date;
  v_result Paycode%ROWTYPE;
BEGIN 
  var_num1 := 100; 
  payDate := '10/1/2013';

    SELECT * INTO v_result
    FROM Paycode
    WHERE PaycodeID = var_num1 and PaycodeDate = payDate;

END;