O5 - sqlite读取db文件

查看db文件类型

~/Desktop/sqlite# file pkg.db
pkg.db: SQLite 3.x database

sqlite打开db文件

sqlite3 pkg.db
SQLite version 3.8.2 2013-12-06 14:53:30
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite>

查看所有数据库

sqlite>.database

查看所有表

sqlite>.tables

查看表结构

sqlite> .schema package
CREATE TABLE package(
pkgname text not null,
version text,
depname text,
depversion text,
deplimit text
);

搜索

sqlite>select * from package;

代码：

//gcc readdb.c sqlite3.c -o read -lpthread -ldl
int main( void )
{
	sqlite3 *db = NULL;
	char *errmsg = 0;
	int row = 0, column = 0;
	int i = 0;
	char **result;

	if(SQLITE_OK != sqlite3_open("pkg.db", &db)) {
		fprintf(stderr,"Can't open database: %s\n",sqlite3_errmsg(db));
		sqlite3_close(db);
		return -1;
	}

	char *sql="select * from package";
	sqlite3_get_table(db, sql, &result, &row, &column, &errmsg);
	printf("row:%d column:%d\n", row, column);
	for(i=0; i < (row + 1) * column; i++) {
		printf("%s\n", result[i]);
	}
 
	sqlite3_free_table(result);
	sqlite3_close(db);

	return 0;
}