Oracle中indexbybinary_integer的作用 2011-01-1115:56 如语句:type numbers istableofnumberindexbybinary_integer;其作用是,加了”indexbybinary_integer”后,numbers类型的下标就是自增长,numbers类型在插入元素时,不需要初始化,不需要每次extend增加一个空间。
TYPE TPISTABLEOFNUMBERINDEXBYBINARY_INTEGER; TYPE VSISTABLEOFVARCHAR2(100)INDEXBYBINARY_INTEGER; TYPE VDISTABLEOFAPPS.SYS_USER.CREATE_DATE%TYPE; VN TP; VS_NAME VS; VD_DATE VD; CURSORP_CURSORIS SELECTUSER_ID, USER_NAME, CREATE_DATEFROMAPPS.SYS_USER; BEGIN OPENP_CURSOR; FETCHP_CURSOR BULK...
CREATE TABLE my_emp(empno number(4),ename varchar2(15)) / DECLARE TYPE empno_table_type IS TABLE OF my_emp.empno%TYPE INDEX BY BINARY_INTEGER; TYPE ename_table_type IS TABLE OF my_emp.ename%TYPE INDEX BY BINARY_INTEGER; v_empno_table empno_table_type; v_ename_table ename_table_type...
CREATE TABLE my_emp(empno number(4),ename varchar2(15)) / DECLARE TYPE empno_table_type IS TABLE OF my_emp.empno%TYPE INDEX BY BINARY_INTEGER; TYPE ename_table_type IS TABLE OF my_emp.ename%TYPE INDEX BY BINARY_INTEGER; v_empno_table empno_table_type; v_ename_table ename_table_type...
@ 理解一: table 相当于是数组,这里定义了一个数组类型t_string; INDEX BY BINARY_INTEGER这里是定义数组下标是整数,因为ORACLE中下标可以是字符串. VARCHAR2(32767)这是定义数组里面只能放字符串 @ 理解二: t_string是哈希表,定义了两个字段[key,value] ...
1 oracle变量表类型declaretype my_emp is table of scott.emp%rowtypeindex by binary_integernew_emp my_empv_num number:=0cursor cur_emp is select empno,ename,job,sal from scott.emp;--1.cursor 是个什么东东?beginfor v_emp in cur_emp loop --2.v_emp是个什么东东?怎么和正常for语句不一样...
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This instruction pushes a hardcoded number on the stack. The instruction format is LDC.size[.num], where size is the byte size of the value and num is a special short encoding for a 4-byte integer from -128 to 127 (when size is I4). The size is either I4 (4-byte integer), I8 ...
The status variable Ndb_metadata_detected_count shows the number of times since mysqld was last started that inconsistencies have been detected. NDB ensures that NDB database, table, log file group, and tablespace objects submitted by the metadata change monitor thread during operations following ...
"text":"binary", info->index, info->index + len); if (info->message_opcode == WS_TEXT) { data[len] = 0; Serial.printf("%s\n", (char*)data); } else { for (size_t i=0; i < len; i++) { Serial.printf("%02x ", data[i]); } Serial.printf("\n"); } if ((info-...