[转载]c操作sqlite3基本方法

[ 2010-05-09 20:08:47 | 作者: yuhen ]

相关 API 信息可参考官方 帮助手册。

测试代码:

#include <sqlite3.h>

void exec(sqlite3* db, const char* sql)
{
    sqlite3_stmt* stmt;

    if (sqlite3_prepare(db, sql, strlen(sql), &stmt, NULL) == SQLITE_OK)
    {
        sqlite3_step(stmt);
    }
    else
    {
        printf("%s\n", sqlite3_errmsg(db));
    }

    sqlite3_finalize(stmt);
}

void exec2(sqlite3* db, const char* sql)
{
    sqlite3_stmt* stmt;

    if (sqlite3_prepare(db, sql, strlen(sql), &stmt, NULL) == SQLITE_OK)
    {
        while (sqlite3_step(stmt) == SQLITE_ROW)
        {
            int id = sqlite3_column_int(stmt, 0);
            unsigned char* name = sqlite3_column_text(stmt, 1);

            printf("%d, %s\n", id, name);
        }
    }
    else
    {
        printf("%s\n", sqlite3_errmsg(db));
    }

    sqlite3_finalize(stmt);
}

int main(int argc, char* argv[])
{
    sqlite3* db;

    if (sqlite3_open("./test.db", &db) == SQLITE_OK)
    {
        exec(db, "CREATE TABLE [user]([id] INTEGER PRIMARY KEY ASC AUTOINCREMENT, [name])");
        exec(db, "INSERT INTO [user] ([name]) VALUES ('user1')");    
        exec(db, "INSERT INTO [user] ([name]) VALUES ('user2')");    
        exec(db, "INSERT INTO [user] ([name]) VALUES ('user3')");    
        exec2(db, "SELECT * FROM [user]");    

        sqlite3_close(db);
    }
    else
    {
        printf("%s\n", sqlite3_errmsg(db));
    }

    return EXIT_SUCCESS;
}