类似于split的作用 将字符串, 分隔开成字符数组
也是从一个开源的软件中看到的 就冒昧的拿了出来 PL/SQL split procedure comma_to_arr(list in varchar2, arr out col_head_arr, lenarr out integer) is type col_head_arr is table of varchar2(50) index by binary_integer; l_arr col_head_arr;--字符数
也是从一个开源的软件中看到的 就冒昧的拿了出来PL/SQL split
procedure comma_to_arr(list in varchar2, arr out col_head_arr, lenarr out integer) is type col_head_arr is table of varchar2(50) index by binary_integer; l_arr col_head_arr;--字符数组 i integer;-- str_start integer; arr_counter integer; begin -- first check if it is null --如果为空 就直接返回空的数组 ,标记长度为0 if length(list) = 0 then arr := l_arr; lenarr := 0; return; end if; i := 1; str_start := 1; arr_counter := 0; --循环条件 字符扫描位置小于字符长度+1 while i <= length(list) + 1 loop --如果字符长度大于 字符长度 或者是 字符串的第i位是i if i > length(list) or substr(list, i, 1) = ',' then --要数组长度递增 arr_counter := arr_counter + 1; --将 浮标位置开始 以及到 ,之间的 字符保存 l_arr(arr_counter) := substr(list, str_start, i - str_start); --将浮标 设定为,后的下一个字符 str_start := i + 1; end if; --移动 字符扫描位置 i := i + 1; end loop; arr := l_arr; lenarr := arr_counter; end;

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