Question

我正在DB2中执行以下过程。

create procedure checkUpdate()
LANGUAGE SQL
begin 
DECLARE EOF INT DEFAULT 0;
DECLARE STMT VARCHAR(200);
DECLARE COL_NAME NVARCHAR(40);
    Declare col_name_cursor cursor  for 
    select c.column_name from sysibm.tables t join sysibm.columns c on t.table_schema =   c.table_schema and t.table_name = c.table_name where t.table_schema ='ARCHANA' and t.table_name =   'ADULT'  and c.data_type not like 'CHARACTER%';
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET EOF = 1;
    OPEN col_name_cursor;
    WHILE EOF = 0 DO
    FETCH FROM col_name_cursor INTO COL_NAME;
    INSERT INTO GAUSSIAN_VALUES select CLASS,avg(COL_NAME),stddev(COL_NAME) from ADULT GROUP BY CLASS;
    END WHILE;
    CLOSE col_name_cursor;
    end@

但是，在DB2命令窗口中执行此操作时出现以下错误。

SQL0420N在函数“DECFLOAT”的字符串参数中找到无效字符。 SQLSTATE = 22018

我做了一些调试，发现错误来自Declare游标行。我将光标的select语句更改为“从成人中选择年龄”进行检查，错误消失。选择整数值时不会发生错误。在varchar的情况下发生。我被困住了，不知道这里缺少什么链接。

谢谢！

Answer 1

COL_NAME是NVARCHAR类型......

如何计算字符值的avg(COL_NAME),stddev(COL_NAME)？

也许你打算花一点时间？

DECFLOAT错误在DB2中运行过程时

1 个答案: