EXEC SQL BEGIN DECLARE SECTION; char a[10000][3]; VARCHAR b[10000][31]; char c[3]; EXEC SQL END DECLARE SECTION; ... int delete_rows=10000; ... 1. CHAR类型数组变量 EXEC SQL for :delete_rows delete FROM table_name WHERE a= :a; 由于char对应于Oracle的char类型,因此若有空格,则此...
EXEC SQL BEGIN DECLARE SECTION; char ename[10]; EXEC SQL END DECLARE SECTION; 如果ENAME在表中的值为'abc',则取出的值为'abc '; 可用语句EXEC SQL VAR重定义CHAR型变量。这样宿主变量会自动去掉右空格。如下: EXEC SQL BEGIN DECLARE SECTION; char ename[11]; EXEC SQL VAR ac_ename IS STRING(11)...
EXEC SQL BEGIN DECLARE SECTION; char a[10000][3]; VARCHAR b[10000][31]; char c[3]; EXEC SQL END DECLARE SECTION; ... int delete_rows=10000; ... 1. CHAR类型数组变量 EXEC SQL for :delete_rows delete FROM table_name WHERE a= :a; 由于char对应于Oracle的char类型,因此若有空格,则此...
EXEC SQL PREPARE sqlproc FROM :sql; EXEC SQL DECLARE cur_user_name CURSOR FOR sqlproc; EXEC SQL OPEN cur_user_name; while(1) { EXEC SQL FETCH cur_user_name into :ora_id; if (sqlca.sqlcode < 0) { /*FETCH CURSOR失败*/ printf("fetch cursor fail,sqlcode=%ld,sqlserr=%s",sqlca.sql...
#include<stdio.h>#include<string.h>#include<stdlib.h>#include “sqlca.h”// 拓展 sqlgls 函数作用域externsqlgls(char*,size_t*,size_t*);EXECSQLBEGINDECLARESECTION;char*serversid=“scott/tiger@orcl”;// 宿主变量,c与sql的一种数据类型的桥梁int deptno;char dname[20];char loc[10];// loc...
EXEC SQL BEGIN DECLARE SECTION; char ename[15]; EXEC SQL END DECLARE SECTION; 当插入的字符串长度大于10,小于15时,如:EXEC SQL INSERT INTO EMP(ENAME) VALUES('12345678901');会出现以下错误: error:ORA-01401: 插入的值对于列过大。 当插入的字符串长度大于15,如:EXEC SQL INSERT INTO EMP(ENAME) ...
EXEC SQL ROLLBACK WORK RELEASE; } 1、宿主变量的声明 在PROC中,在SQL语句中用到的变量称为宿主变量。他们应在EXEC SQL BEGIN DECLARE SECTION;与EXEC SQL EDN DECLARE SECTION; 之间声明,如上面所示.在声明宿主变量时应注意以下几点: (1) 在数据库表中定义为VARCHAR2,VARCHAR,CHAR的字段,在PROC中可声明为CHA...
EXEC SQL BEGIN DECLARE SECTION; char columnName[64]; char selectStr[5120]; char insertStr[3072]; char date_s[8 + 1]; char date_e[8 + 1]; char resultArray[128]; int dataLegth, ANSI_varchar_type, occurs; char *strSql = "SELECT ut.column_name FROM user_tab_columns ut WHERE ut...
#define_CRT_SECURE_NO_WARNINGS#include<stdio.h>#include<stdlib.h>#include<string.h>#include"sqlca.h"EXEC SQL BEGIN DECLARE SECTION;char*serverid="scott/123456@orcl";intdeptid;charedname[32];charedloc[32]; EXEC SQL END DECLARE SECTION;voidmain() ...
EXEC SQL ROLLBACK WORK; 可执行与说明性SQL语句 分类 语句 说明 说明性语句 ARRAYLEN BEGIN DECLARE SECTION END DECLARE SECTION DECLARE INCLUDE TYPE VAR WHENEVER PL/SQL情况下使用的宿主数组 声明开始 声明结束 命名ORACLE对象 文件引用 自定义数据类型等价 宿主变量等价 错误处理说明 可执行语句 ALTER ANALYZE ...