Loops “我的代码”中显示的表错误中已存在缺少右括号和正在添加的列
我正在尝试运行此代码Loops “我的代码”中显示的表错误中已存在缺少右括号和正在添加的列,loops,alter-table,execute-immediate,Loops,Alter Table,Execute Immediate,我正在尝试运行此代码 declare temp_atr_val varchar2(400); temp_val varchar2 (400); temp_sum_percent decimal (10,3); temp_variable number (10,3); column_count number ; val_count number; sales_store number; begin select count(distinct ATTRIBUTE_INPUT) into
declare
temp_atr_val varchar2(400);
temp_val varchar2 (400);
temp_sum_percent decimal (10,3);
temp_variable number (10,3);
column_count number ;
val_count number;
sales_store number;
begin
select count(distinct ATTRIBUTE_INPUT) into column_count from look_up_table;
for ind in 1..column_count loop
/* putting current value of attribute from look_up_table in temp variable*/
select ATTRIBUTE_INPUT into temp_atr_val from (
select ATTRIBUTE_INPUT, rownum rwn
from
(
select distinct ATTRIBUTE_INPUT
from look_up_table
)
) where rwn = ind;
select count( value_for_atr ) into val_count from look_up_table;
for ind in 1..val_count loop
/* putting current value_for_atr for corresponding attribute from look_up_table in temp variable*/
select value_for_atr into temp_val from
(
select value_for_atr, rownum rwn
from look_up_table
) where rwn = ind;
SELECT SUM(CASE WHEN temp_atr_val = temp_val THEN net_sales_home ELSE 0 END) into temp_variable
FROM schemafinal;
/*temp_variable := temp_variable/sales_store;*/
EXECUTE IMMEDIATE 'ALTER TABLE SAR ADD (percent_'||temp_val||' number)';
EXECUTE IMMEDIATE ' update SAR b
set b.percent_'||temp_atr_val||'_'||temp_val||' = 105 ';
END LOOP;
END LOOP;
END;
但每次代码显示以下两个错误之一时:
ORA-01430:表中已存在正在添加的列
我不知道为什么会发生这种情况,我已经尝试了几乎所有的方法。在不知道数据结构的情况下,很难分析查询 但我假设您需要在第二个循环select查询中使用一个额外的属性输入条件来查找临时值。否则,对于每个属性输入临时值将返回相同的结果 这意味着在第一次循环的第二次迭代中,temp_val将与第一次迭代的旧值相同。因此ALTERTABLEADD查询将抛出错误 因此,请尝试添加一个额外的属性_输入条件
/* putting current value_for_atr for corresponding attribute from look_up_table in temp variable*/
select value_for_atr into temp_val from
(
select value_for_atr, rownum rwn
from look_up_table
where ATTRIBUTE_INPUT = temp_atr_val
) where rwn = ind;
我试过了,但没有显示出任何错误。但是现在新列没有添加到SAR表中。我不知道临时变量的值是否正确。我怎么检查?