Question

我试图在oracle 11g上执行以下SQL语句

select product.product_id, category.category_id, product.name, category.description
from product , category
inner JOIN category_prodcut ON category.category_id = category_prodcut.category_id
inner JOIN category_prodcut ON product.product_id = category_prodcut.product_id;

但出现以下错误：

ORA-00904：“ PRODUCT”。“ PRODUCT_ID”：无效的标识符   00904. 00000-“％s：无效的标识符”   *原因：
  *行动：   错误在行：56列：32

该如何解决？怎么了？

product_id在那里是因为我这样做：

select product_id from product;

一切正常

Answer 1

我只能想象您正在尝试编写此查询：

<script type="text/javascript">
    $(document).ready(function(result){
        if($("#id_purchasetotal-0-Disc_p").val() != ''){
            $('#id_purchasetotal-0-Quantity_p, #id_purchasetotal-0-rate_p, #id_purchasetotal-0-Disc_p').on('change', function() {
            $('#id_purchasetotal-0-Total_p').val($('#id_purchasetotal-0-Quantity_p').val() * $('#id_purchasetotal-0-rate_p').val() * (1 - ($("#id_purchasetotal-0-Disc_p").val()/100)));
            });
        }
        else {
            $('#id_purchasetotal-0-Quantity_p, #id_purchasetotal-0-rate_p').on('change', function() {
            $('#id_purchasetotal-0-Total_p').val($('#id_purchasetotal-0-Quantity_p').val() * $('#id_purchasetotal-0-rate_p').val());
            });
        }      
    });
</script>

连接时发生Oracle错误“无效的标识符00904。00000-“％s：无效的标识符”

1 个答案: