使用FMDB查询数据库内容

+(NSArray*)updatetable

{

FMDatabase*db=[CractDaouptata  Getdb];

NSMutableArray*arr;

if([dbopen]) {

if([dbtableExists:@"student"]) {

//查询数据库内部的内容;

NSString*sqlStr= [NSStringstringWithFormat:@"select * from student "];

arr=[[[NSMutableArrayalloc]initWithCapacity:0]autorelease];

FMResultSet*rs=[dbexecuteQuery:sqlStr];

while([rsnext] ) {

NSString* findmane=[rsstringForColumn:@"name"];

[arraddObject:findmane];

[dbsetShouldCacheStatements:YES];

}

}

}

returnarr;

}

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