0.下载
下载sqlite源代码:
1.创建测试库数据
创建test.db如下:可用sqlite3或者sqlite brower创建
BEGIN
TRANSACTION;
CREATE TABLE sdns (id INTEGER PRIMARY KEY,name TEXT,ip TEXT);
INSERT INTO sdns VALUES(1,'UNI-BJ-SDNS','1.2.3.4');
INSERT INTO sdns VALUES(2,'CTC-GD-SDNS','5.6.7.8');
COMMIT;
CREATE TABLE sdns (id INTEGER PRIMARY KEY,name TEXT,ip TEXT);
INSERT INTO sdns VALUES(1,'UNI-BJ-SDNS','1.2.3.4');
INSERT INTO sdns VALUES(2,'CTC-GD-SDNS','5.6.7.8');
COMMIT;
2.创建测试程序
//gcc sqlite3.c test.c -o t -lpthread -ldl
//./t test.db "select * from sdns"
#include <stdlib.h>
#include <stdio.h>
#include "sqlite3.h"
//通过回调函数输出结果
static int callback(void *NotUsed,int argc,char **argv,char **azColName){
int i;
for(i=0; i<argc; i++){
//列名 列值
printf("%s = %s\n",azColName[i],argv[i] ? argv[i] : "NULL");
}
printf("\n");
return 0;
}
int main(int argc,char **argv){
sqlite3 *db;
char *zErrMsg = 0;
int rc;
if( argc!=3 ){
fprintf(stderr,"Usage: %s DATABASE SQL-STATEMENT\n",argv[0]);
exit(1);
}
//打开数据库
rc = sqlite3_open(argv[1],&db);
if( rc ){
//执行出错,关闭数据库
fprintf(stderr,"Can't open database: %s\n",sqlite3_errmsg(db));
sqlite3_close(db);
exit(1);
}
rc = sqlite3_exec(db,argv[2],callback,&zErrMsg);
if( rc!=SQLITE_OK ){
//打印错误信息
fprintf(stderr,"SQL error: %s\n",zErrMsg);
sqlite3_free(zErrMsg);
}
sqlite3_close(db);
return 0;
}
//./t test.db "select * from sdns"
#include <stdlib.h>
#include <stdio.h>
#include "sqlite3.h"
//通过回调函数输出结果
static int callback(void *NotUsed,int argc,char **argv,char **azColName){
int i;
for(i=0; i<argc; i++){
//列名 列值
printf("%s = %s\n",azColName[i],argv[i] ? argv[i] : "NULL");
}
printf("\n");
return 0;
}
int main(int argc,char **argv){
sqlite3 *db;
char *zErrMsg = 0;
int rc;
if( argc!=3 ){
fprintf(stderr,"Usage: %s DATABASE SQL-STATEMENT\n",argv[0]);
exit(1);
}
//打开数据库
rc = sqlite3_open(argv[1],&db);
if( rc ){
//执行出错,关闭数据库
fprintf(stderr,"Can't open database: %s\n",sqlite3_errmsg(db));
sqlite3_close(db);
exit(1);
}
rc = sqlite3_exec(db,argv[2],callback,&zErrMsg);
if( rc!=SQLITE_OK ){
//打印错误信息
fprintf(stderr,"SQL error: %s\n",zErrMsg);
sqlite3_free(zErrMsg);
}
sqlite3_close(db);
return 0;
}
gcc sqlite3.c test.c -o t -lpthread -ldl
[root@localhost sqlite]# ./t test.db "select * from sdns"
id = 1
name = UNI-BJ-SDNS
ip = 1.2.3.4
id = 2
name = CTC-GD-SDNS
ip = 5.6.7.8
id = 1
name = UNI-BJ-SDNS
ip = 1.2.3.4
id = 2
name = CTC-GD-SDNS
ip = 5.6.7.8
5.这种编译把sqlite打包到程序里,因此程序比较大,但是这样部署时不用去加载.so库文件
6.用gnuwin32在window下也可以编译,效果如下
end
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