Question

我在一个函数中传递一个tablename作为参数，但不知何故它会在执行时抛出错误，但是如果我不传递tablename作为参数并且硬编码就可以了。所以它基本上是一个语法问题，我不明白如何使它工作。请在我的POSTGRES查询功能下找到

 Create Or Replace function Records (tablename text) 
RETURNS integer AS $total$
declare
    total integer;

      Begin
     select count (*) into total  FROM ''||tablename||''
     WHERE now() - cast(date_dimension_year||'-'||date_dimension_month||'-'||date_dimension_day AS date) < INTERVAL '3 months' ;   
     return total;    
       END;
 $total$ LANGUAGE plpgsql;

任何人都可以帮我解决我的错误。我得到的错误是

14:07:05  [CREATE - 0 row(s), 0.000 secs]  [Error Code: 0, SQL State: 42601]  ERROR: syntax error at or near "''"   Position: 161 ... 1 statement(s) executed, 0 row(s) affected, exec/fetch time: 0.000/0.000 sec  [0 successful, 0 warnings, 1 errors]

无法在postgres中将表名作为参数传递

0 个答案: