[IOS:OC]Sqlite建库建表增删改查简单实例

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#import "ViewController.h"
#import <sqlite3.h>
#import "Person.h"
@interface ViewController ()
{
    sqlite3 *_db;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSString *path=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents/person.db"];
    NSLog(@"%@",path);
    if(SQLITE_OK!=sqlite3_open(path.UTF8String, &_db))//打开数据库 不存在则创建
    {
        NSLog(@"打开或创建数据库失败!");
        return;
    }
    char *error;
    if(SQLITE_OK!=sqlite3_exec(_db, "create table if not exists ‘t_person‘ (name text,age integer,sex text)", nil, nil, &error))
    {
        NSLog(@"创建表失败");
        return;
    }
    //添加数据 修改删除同理
//    for (int i=1; i<=50; i++) {
//        const char *c=[[NSString stringWithFormat:@"insert into t_person values(‘%@‘,%d,‘%@‘)",[NSString stringWithFormat:@"li%d",i],i,i%2==0?@"男":@"女"] UTF8String];
//        if(SQLITE_OK!=sqlite3_exec(_db, c, nil, nil, &error))
//        {
//            NSLog(@"添加数据失败! error:%s",error);
//            return;
//        }
//    }
    
    //查询
    sqlite3_stmt *stmt;
    if(SQLITE_OK ==sqlite3_prepare(_db, [@"select * from t_person" UTF8String], -1/*要查询的字节数 -1表示无限制*/, &stmt, nil/*如果限制字节  该参数返回未被查询的数据))
    {
        while(SQLITE_ROW == sqlite3_step(stmt))
        {
            Person *p=[[Person alloc]init];
            p.name=[NSString stringWithUTF8String:(const char*)sqlite3_column_text(stmt, 0)];
            p.age=sqlite3_column_int(stmt, 1);
            p.sex=[NSString stringWithUTF8String:(const char*) sqlite3_column_text(stmt, 2)];
            NSLog(@"%@--%d--%@",p.name,p.age,p.sex);
        }
    }
}



@end

[IOS:OC]Sqlite建库建表增删改查简单实例

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原文地址：http://www.cnblogs.com/A-Nian/p/4948110.html