假设我有一个名为ABC的表,字段为ABCid,ABCname,ABCImagePath,ABCSequence。现在这个表包含了40多行。
现在我有一组数字说1,4,5,7,8我希望将这些数字与ABCid进行比较,并根据这些ID获取表ABC中的所有数据。
+ (void) getSelectedData : (int)ABCId
{
NSString *dbPath = [self getDBPath];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK)
{
NSString *query =[NSString stringWithFormat:@"select * from [ABC] where ABCId=%d",ABCId];
const char *sql = [query cStringUsingEncoding:NSUTF8StringEncoding];
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK)
{
[self getInitialDataToDisplay:dbPath];
ABC *DataObj = [[ABC alloc] initWithPrimaryKey:ABCId];
DataObj.ABCName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)];
ABCImagePath = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)];
DataObj.ABCSequence = sqlite3_column_int(selectstmt,8);
[appDelegate.arrGetData addObject:DataObj]; }
else
{
NSAssert1(0,@"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database));
}
NSLog(@"%d",[appDelegate.DataArrayTrans count]);
}
else
sqlite3_close(database); //Even though the open call failed, close the database connection to release all the memory.
}
但是应用程序在if条件下崩溃了。另请注意,我使用pageController中的以下行来从ABC Object文件调用上述函数。
for(int i=0;i<[arrRId count];i++)
{
[ABC getSelectedData:[[arrRId objectAtIndex:i]integerValue]];
[arr576576 addObject:[appDelegate.arrGetData valueForKey:@"ABCId"]];
}
请指导我在哪里弄错了。谢谢。
答案 0 :(得分:0)
你的查询应该像这样从ABC中选择*其中ABCId IN(1,4,5,7,8) 就是这样。