oracle table of varchar2,table of number index by varchar2(100) oracle中INDEX BY BINARY_INTEGER 的作用...
–字符串序列要这样declaretype t istable of number(3) indexby varchar2(3);hash_t t;l_row varchar2(3);beginhash_t(‘a’) := 10;hash_t(‘b’) := 20;l_row :=hash_t.first;while(l_rowisnot null) loopdbms_output.put_line...