Question

我正在尝试在程序的WHERE子句中执行IF / ELSE，但似乎没有正确的工作。我不确定我是否正确构建它。

我得到PL / SQL：ORA-00933：SQL命令未正确结束于“IF p_job_year IS NOT NULL THEN”

这就是我所拥有的：

 WHERE 
    (val1s.val1 = p_val1 OR p_val1 IS NULL) AND
    (UPPER(val2s.val2) LIKE UPPER(p_val2) OR p_val2 IS NULL) AND
    (jp.row_top.job_type_id = p_job_type_id OR p_job_type_id IS NULL) 

    AND ntab.group_id = pgds.id(+) 
    AND jp.row_top.val1_id = val1s.id(+) 
    AND val1s.val2_id = val2s.id(+)

 IF p_job_year IS NOT NULL THEN <<<<<<<< ERROR HERE
            AND p_job_year = ntab.fiscal_year(+)
            AND jp.jobload_year =  p_job_year
            AND jp.row_top.fiscal_year = p_job_year
  ELSE
        AND jp.jobload_year < TO_CHAR(ADD_MONTHS(CURRENT_DATE, -24),'YYYY') 
        AND jp.row_top.fiscal_year < TO_CHAR(ADD_MONTHS(CURRENT_DATE, -24),'YYYY')


END IF;

    AND JP.VER = (select MAX(jp2.ver) from job_plans jp2
                                                    WHERE JP.ID_NUMBER = JP2.ID_NUMBER)
    AND  jack_work_pkg.get_last_jack_work_first_type(jp.id) != 1;                                                
          RETURN result_cur;
  END summarize_work_data;

Answer 1

你不能以这种方式使用IF子句，你必须稍微不同地构造where子句。

AND
(
    (
        p_job_year IS NULL
        AND jp.jobload_year < TO_CHAR(ADD_MONTHS(CURRENT_DATE, -24),'YYYY')          
        AND jp.row_top.fiscal_year < TO_CHAR(ADD_MONTHS(CURRENT_DATE, -24),'YYYY') 
    ) 
    OR
    (
        p_job_year is not NULL
        AND p_job_year = ntab.fiscal_year(+)             
        AND jp.jobload_year =  p_job_year             
        AND jp.row_top.fiscal_year = p_job_year   
    )
)

Answer 2

是什么让您认为可以将IF / ELSE / END IF写入WHERE子句？

基本上你可以添加到WHERE子句的是这样的：

AND (
    (p_job_year IS NOT NULL AND (
            AND p_job_year = ntab.fiscal_year(+)
            AND jp.jobload_year =  p_job_year
            AND jp.row_top.fiscal_year = p_job_year))
    OR (p_job_year IS NULL AND (
        AND jp.jobload_year < TO_CHAR(ADD_MONTHS(CURRENT_DATE, -24),'YYYY') 
        AND jp.row_top.fiscal_year < TO_CHAR(ADD_MONTHS(CURRENT_DATE, -24),'YYYY')))
)

Answer 3

我假设整个块只是where子句。如果是这种情况，则不能在where子句中使用“IF..ELSE”。

而不是使用

Where condition1
  and condition2
  and IF Condition3 then
      AND condition4...
      ELSE
          condition5
  and <.....>

像这样重写你的查询。只需要使用AND和OR以及括号

Where condition1
  and condition2
  and ((Condition3 and condition4) or (condition5))
  and <.....>

Answer 4

在WHERE子句中没有IF THEN ELSE - 但如果需要，可以使用CASE WHEN THEN ELSE进行补偿...

Answer 5

嗯，这并不像你想象的那么简单。您无法以这种方式创建动态查询。一个选项是将查询创建为字符串，并使用execute immediate来运行它。

PL / SQL：ORA-00933：SQL命令未正确结束

5 个答案: