ORA-06502: PL/SQL: 数字或值错误: 使用 clob 的字符到数字转换错误不起作用

Question

我想在 oracle 过程中为多个 JOBID's 选择数据，所以在这样做时我收到了错误

ORA-06502: PL/SQL: numeric or value error: character to number conversion error

出于这个原因，我将 JOBID 的数据类型更改为 CLOB，但仍然没有任何工作并出现相同的错误。

SELECT CAST( STR2TBL('7507, 22781, 24949, 187771, 189739, 185736, 185737, 187276, 187665, 186012, 185743,
187559, 195056, 185626, 186337, 186655, 187495, 185679, 186352, 187578, 189666, 186017, 186254, 190430, 
185176, 186243, 186389, 184861, 188567, 192888, 186283, 191680, 186355, 186775, 186776, 189203, 189910, 
184871, 184906, 186125, 186336, 186339, 186565, 190469, 192138, 187710, 190267, 189186, 191515, 187711, 
186442, 187866, 186351, 190211, 186159, 191145, 191377, 187859, 187952, 192877, 185906, 187533, 190735,
185907, 186248, 189255, 185625, 190941, 185449, 191380, 186106, 189510, 186360, 191302, 189611, 190617,
185792, 187083, 188226, 185288, 188150, 186903, 189377, 191694, 188053, 186112, 186683, 192014, 185416, 
191872, 185287, 185305, 190949, 186108, 186109, 189351, 186134, 188553, 188677, 189732, 187494, 188509,
192253, 189756, 191681, 186313, 189972, 191752, 185663, 186169, 188137, 188508, 185178, 192363, 185122,
190679, 187951, 190905, 194509, 194510, 203859, 194422, 195960, 199874, 202223, 204643, 204648, 204808, 
193250, 198709, 204132, 203977, 197526, 198293, 204636, 193779, 197365, 194224, 194842, 194657, 202435,
194597, 204664, 199924, 194526, 195664, 196277, 204668, 204671, 199873, 197154, 199879, 200267, 204798,
204806, 204028, 203714, 203858, 204650, 204658, 195039, 196382, 198780, 199991, 204942, 204947, 204955,
199989, 203400, 203409, 194846, 199896, 200558, 200726, 193576, 204633, 204667, 204674, 204675, 204911,
195745, 198303, 201390, 199988, 198405, 198826, 199871, 199926, 193249, 195256, 199877, 194266, 201870,
196115, 196186, 196949, 202114, 204338, 198203, 202113, 195171, 197902, 198215, 204566, 199990, 193851,
195746, 199872, 202511, 200136, 204600, 204634, 204635, 204646, 204651, 204653, 204654, 204665, 204670,
193058, 193260, 203220, 202043, 193061, 205345, 205192, 205033, 205267, 205400, 205249, 205324, 205351,
205117, 205141, 205142, 205289, 205285, 205016, 205151, 205395, 205220, 205100, 205113, 205140, 205105, 
10522, 3473, 676, 2626, 3474, 3116, 8246, 3478, 5136, 675, 6816, 2621, 2622, 2623, 2624, 3476, 3115, 526, 
2625, 2627, 4175, 674, 5873, 5874, 3475, 3114, 446, 8746, 12825, 16173, 12826, 20967, 25133, 32526, 30226' ) AS MYTABLETYPE ) FROM DUAL;

还有STR2TBL是我的内置函数

create or replace function         str2tbl( p_str in CLOB ) return myTableType
    as
        l_str   long default p_str || ',';
        l_n        number;
        l_data    myTableType := myTabletype();
    begin
        loop
            l_n := instr( l_str, ',' );
            exit when (nvl(l_n,0) = 0);
           l_data.extend;
           l_data( l_data.count ) := ltrim(rtrim(substr(l_str,1,l_n-1)));
           l_str := substr( l_str, l_n+1 );
       end loop;
       return l_data;
  END;

Answer 1

您的过程效率低下，因为它不断用越来越小的子字符串覆盖CLOB。

相反，您可以使用split_string function（将数据类型更改为CLOB）跟踪每个术语前后逗号的位置并从这些位置查找子字符串：

CREATE OR REPLACE TYPE stringlist AS TABLE OF VARCHAR2(20)
/

CREATE OR REPLACE FUNCTION split_String(
  i_str    IN  CLOB,
  i_delim  IN  VARCHAR2 DEFAULT ','
) RETURN stringlist DETERMINISTIC
AS
  p_result       stringlist := stringlist();
  p_start        NUMBER(5) := 1;
  p_end          NUMBER(5);
  c_len CONSTANT NUMBER(5) := LENGTH( i_str );
  c_ld  CONSTANT NUMBER(5) := LENGTH( i_delim );
BEGIN
  IF c_len > 0 THEN
    p_end := INSTR( i_str, i_delim, p_start );
    WHILE p_end > 0 LOOP
      p_result.EXTEND;
      p_result( p_result.COUNT ) := SUBSTR( i_str, p_start, p_end - p_start );
      p_start := p_end + c_ld;
      p_end := INSTR( i_str, i_delim, p_start );
    END LOOP;
    IF p_start <= c_len + 1 THEN
      p_result.EXTEND;
      p_result( p_result.COUNT ) := SUBSTR( i_str, p_start, c_len - p_start + 1 );
    END IF;
  END IF;
  RETURN p_result;
END;
/

那么你可以这样使用它：

SELECT column_value
FROM   TABLE(split_string(
         '7507, 22781, 24949, 187771, 189739, 185736, 185737, 187276, 187665, 186012, 185743, 187559, 195056, 185626, 186337, 186655, 187495, 185679, 186352, 187578, 189666, 186017, 186254, 190430, 185176, 186243, 186389, 184861, 188567, 192888, 186283, 191680, 186355, 186775, 186776, 189203, 189910, 184871, 184906, 186125, 186336, 186339, 186565, 190469, 192138, 187710, 190267, 189186, 191515, 187711, 186442, 187866, 186351, 190211, 186159, 191145, 191377, 187859, 187952, 192877, 185906, 187533, 190735, 185907, 186248, 189255, 185625, 190941, 185449, 191380, 186106, 189510, 186360, 191302, 189611, 190617, 185792, 187083, 188226, 185288, 188150, 186903, 189377, 191694, 188053, 186112, 186683, 192014, 185416, 191872, 185287, 185305, 190949, 186108, 186109, 189351, 186134, 188553, 188677, 189732, 187494, 188509, 192253, 189756, 191681, 186313, 189972, 191752, 185663, 186169, 188137, 188508, 185178, 192363, 185122, 190679, 187951, 190905, 194509, 194510, 203859, 194422, 195960, 199874, 202223, 204643, 204648, 204808, 193250, 198709, 204132, 203977, 197526, 198293, 204636, 193779, 197365, 194224, 194842, 194657, 202435, 194597, 204664, 199924, 194526, 195664, 196277, 204668, 204671, 199873, 197154, 199879, 200267, 204798, 204806, 204028, 203714, 203858, 204650, 204658, 195039, 196382, 198780, 199991, 204942, 204947, 204955, 199989, 203400, 203409, 194846, 199896, 200558, 200726, 193576, 204633, 204667, 204674, 204675, 204911, 195745, 198303, 201390, 199988, 198405, 198826, 199871, 199926, 193249, 195256, 199877, 194266, 201870, 196115, 196186, 196949, 202114, 204338, 198203, 202113, 195171, 197902, 198215, 204566, 199990, 193851, 195746, 199872, 202511, 200136, 204600, 204634, 204635, 204646, 204651, 204653, 204654, 204665, 204670, 193058, 193260, 203220, 202043, 193061, 205345, 205192, 205033, 205267, 205400, 205249, 205324, 205351, 205117, 205141, 205142, 205289, 205285, 205016, 205151, 205395, 205220, 205100, 205113, 205140, 205105, 10522, 3473, 676, 2626, 3474, 3116, 8246, 3478, 5136, 675, 6816, 2621, 2622, 2623, 2624, 3476, 3115, 526, 2625, 2627, 4175, 674, 5873, 5874, 3475, 3114, 446, 8746, 12825, 16173, 12826, 20967, 25133, 32526, 30226',
         ', '
       ));

db小提琴here