(2)单击ok,如下图:
(3)单击Finsh完成工程建立,如下图:
4、sqlite配置
(1)将前面下载和编译期间的.h、.lib、.cpp、.def、.dll文件分别放在inc、lib文件夹下。如下图
其中inc文件内容为:
lib文件内容为:
(2)在C/C++ General的Additional Include Directories中输入..\inc\ 如下图:
(3)在Linker的Additional Library Directories中输入..\lib\ 如下图:
(4)在Linker的Input的Additional Dependencies中输入:sqlite3.lib 如下图:
(5)单击确定,到此sqlite配置已经完成
5、测试代码。
本文给出sqlite使用的文件模式和内存模式测试代码。在TestSqlite.cpp中输入如下代码:
#include "stdafx.h"
#include "sqlite3.h"
int testdb(void);
int testdb2(void);
int testdb3(void);
//callback回调函数 _callback_exec的编写,其中notused为sqlite3_exec中的第四个参数,第二个参数是栏的数目,第三个是栏的名字,第四个为查询得到的值
static int _callback_exec(void * notused,int argc, char ** argv, char ** aszColName)
{
int i;
for ( i=0; i<argc; i++ )
{
printf( "%s = %s/n", aszColName[i], argv[i] == 0 ? "NUL" : argv[i] );
}
return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{
//文件模式
testdb();
testdb2();
testdb3();
return 0;
}
#include <cstdio>
#include <cstdlib>
#include "sqlite3.h"
int testdb(void)
{
sqlite3 *db=NULL;
char *zErrMsg = 0;
int rc;
//打开指定的数据库文件,如果不存在将创建一个同名的数据库文件
rc = sqlite3_open("test1.db", &db);
if(rc)
{
fprintf(stderr, "Can’t open database: %s\n", sqlite3_errmsg(db));
sqlite3_close(db);
return (1);
}
else
printf("You have opened a sqlite3 database named test1.db successfully!\n");
//创建一个表,如果该表存在,则不创建,并给出提示信息,存储在zErrMsg 中
char *sql = " CREATE TABLE test(ID INTEGER PRIMARY KEY,AGE INTEGER,LEVEL INTEGER,NAME VARCHAR(12),SALARY REAL);" ;
sqlite3_exec( db , sql , 0 , 0 , &zErrMsg );
//插入数据
sql = "INSERT INTO test VALUES(NULL , 1 , 1 , ‘201205151206‘, 117.9 );" ;
sqlite3_exec( db , sql , 0 , 0 , &zErrMsg );
int nrow = 0, ncolumn = 0; //查询结果集的行数、列数
char **azResult; //二维数组存放结果
//查询数据
sql = "SELECT * FROM test ";
sqlite3_get_table( db , sql , &azResult , &nrow , &ncolumn , &zErrMsg );
int i = 0 ;
printf( "row:%d column=%d \n" , nrow , ncolumn );
printf( "\nThe result of querying is : \n" );
for( i=0 ; i<( nrow + 1 ) * ncolumn ; i++ )
{
printf( "azResult[%d] = %s\n", i , azResult[i] );
}
//删除数据
sql = "DELETE FROM test WHERE AGE = 1 ;" ;
sqlite3_exec( db , sql , 0 , 0 , &zErrMsg );
//释放掉azResult 的内存空间
sqlite3_free_table( azResult );
sqlite3_close(db); //关闭数据库
int c=getchar();
return 0;
}
int testdb2(void)
{
const char * sSQL = "select * from t1;";
char * pErrMsg = 0;
int ret = 0;
sqlite3 * db = 0;
ret = sqlite3_open("./test2.db", &db);
if ( ret != SQLITE_OK )
{
fprintf(stderr, "Could not open database: %s", sqlite3_errmsg(db));
exit(1);
}
printf("Successfully connected to database/n");
sqlite3_exec( db, sSQL, _callback_exec, 0, &pErrMsg );
if ( ret != SQLITE_OK )
{
fprintf(stderr, "SQL error: %s/n", pErrMsg);
sqlite3_free(pErrMsg);
}
sqlite3_close(db);
db = 0;
return 0;
}
int testdb3(void)
{
const char * sSQL = "select * from t1;";
char * pErrMsg = 0;
int ret = 0;
sqlite3 * db = 0;
ret = sqlite3_open(":memory:", &db);
if ( ret != SQLITE_OK )
{
fprintf(stderr, "Could not open database: %s", sqlite3_errmsg(db));
exit(1);
}
printf("Successfully connected to database/n");
char *zErrMsg = 0;
char *sql = " CREATE TABLE test(ID INTEGER PRIMARY KEY,AGE INTEGER,LEVEL INTEGER,NAME VARCHAR(12),SALARY REAL);" ;
sqlite3_exec( db , sql , 0 , 0 , &zErrMsg );
//插入数据
sql = "INSERT INTO test VALUES(NULL , 1 , 1 , ‘201205151206‘, 20.9 );" ;
sqlite3_exec( db , sql , 0 , 0 , &zErrMsg );
int nrow = 0, ncolumn = 0; //查询结果集的行数、列数
char **azResult; //二维数组存放结果
//查询数据
sql = "SELECT * FROM test ";
sqlite3_get_table( db , sql , &azResult , &nrow , &ncolumn , &zErrMsg );
int i = 0 ;
printf( "row:%d column=%d \n" , nrow , ncolumn );
printf( "\nThe result of querying is : \n" );
for( i=0 ; i<( nrow + 1 ) * ncolumn ; i++ )
{
printf( "azResult[%d] = %s\n", i , azResult[i] );
}
//释放掉azResult 的内存空间
sqlite3_free_table( azResult );
sqlite3_close(db); //关闭数据库
return 0;
}
6、运行结果