Oracle PL/SQL选择变量 [英] Oracle PL/SQL select into variables

问题描述

我正在尝试在SQL Developer中运行以下查询，但收到错误.我试图声明两个局部变量(var_num1和payDate)，然后设置变量.有人知道我会做错什么吗?我知道Oracle SQL与SQL Server有点不同.

I am trying to run the following query in SQL Developer, but I am receiving an error. I am trying to declare two local variables (var_num1 and payDate) and then set the variables. Does anyone know what I can be doing incorrectly? I know Oracle SQL is a little different than SQL Server.

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:

推荐答案

在PL/SQL中，如果没有INTO子句，则不能使用SELECT. SELECT的输出必须存储在某个地方.例如.表或变量或记录.请参见下面的示例，该示例如何将SELECT语句的结果存储到记录中.

You cannot use SELECT without INTO clause in PL/SQL. The output of the SELECT must be stored somewhere. Eg. table or variable or perhaps a record. See example below how to store result of the SELECT statement into record.

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; 

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