Question

我正在使用Oracle APEX，并且试图将动态SQL查询存储在PL / SQL Function主体中。这是我当前对经典报告的SQL查询：

SELECT 
    RELEASE,
    COUNT(*) as "Total Tests", --total
    SUM(CASE WHEN TYPE = 'P1' THEN 1 ELSE 0 END) as "P1",
    SUM(CASE WHEN TYPE = 'P2' THEN 1 ELSE 0 END) as "P2",
    SUM(CASE WHEN TYPE = 'P3' THEN 1 ELSE 0 END) as "P3",
    SUM(CASE WHEN TYPE = 'P4' THEN 1 ELSE 0 END) as "P4"
    FROM TABLENAME
group by RELEASE
ORDER BY case
    when RELEASE = '19.3' then 1
    when RELEASE = '18.11' then 2
    when RELEASE = '18.9' then 3
    when RELEASE = '18.7' then 4
    when RELEASE = '17.3' then 5
    else 6
end asc

我正在尝试将'tablename'存储在页面项中，以便每当用户更改页面项时，此查询将自动从给定表中提取。我试图围绕它构建一个pl / sql函数，但继续遇到“字符串”错误。

有人知道如何将其转换为动态pl / sql函数吗？

谢谢。

Answer 1

您应该

创建经典报告，其来源是返回查询的函数

该查询应如下所示：

return '
  SELECT 
    RELEASE,
    COUNT(*) as "Total Tests", --total
    SUM(CASE WHEN TYPE = ''P1'' THEN 1 ELSE 0 END) as "P1",
    SUM(CASE WHEN TYPE = ''P2'' THEN 1 ELSE 0 END) as "P2",
    SUM(CASE WHEN TYPE = ''P3'' THEN 1 ELSE 0 END) as "P3",
    SUM(CASE WHEN TYPE = ''P4'' THEN 1 ELSE 0 END) as "P4"
    FROM ' || 
    SYS.DBMS_ASSERT.sql_object_name(:P1_TABLE_NAME) ||
  ' group by RELEASE 
  ORDER BY case
    when RELEASE = ''19.3''  then 1
    when RELEASE = ''18.11'' then 2
    when RELEASE = ''18.9''  then 3
    when RELEASE = ''18.7''  then 4
    when RELEASE = ''17.3''  then 5
    else 6
  end asc';

DBMS_ASSERT在这里是为了防止SQL注入
将“使用通用列名”设置为“是”
页面项目的名称为:P1_TABLE_NAME（在我的示例中）；它应该是一个文本字段，请按Enter键提交

仅此而已。

使用PL / SQL函数主体返回SQL查询

1 个答案: