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...
@ 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] key是唯一的主键,key的类型的二进制类型,并且是自动增长...
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...
"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-...
问使用java varchar2调用参数类型为"is table of SimpleJdbcCall“的过程oracleEN我是来展示德码的，就像...
4 Enter a number: 100 Enter a number: 42 Enter a number: 400 Enter a number: 300 The average is 210 This program was supplied by the Nand to Tetris software suite. Pong The game of Pong, showing off the language's object-oriented model. Use the arrow keys to move the paddle left ...
"String or binary data would be truncated" and field specifications “Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted...
Another thing to be aware of is that MySQL 8.0 has introduced an auto-upgrade mechanism. As of MySQL 8.0.11, the server version is written to the data dictionary tablespace. When the server starts, it will compare the server version number found in the mysql.ibd file (source) with its ...