Sqlite3 step == SQLITE_ROW not working for me - objective-c

Question

As i am new to Xcode so no idea to fix this issue. Please help me out to figure the actual issue.
Database connection is build up, the query is execute, but I always get the message as : Result not found, after execution the query. :(
- (void)viewDidLoad
{
NSString *MyDirectory;
NSArray *DirectoryPaths;
// Get the documents directory
DirectoryPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
MyDirectory = [DirectoryPaths objectAtIndex:0];
// Build the path to the database file
MyDBPath = [[NSString alloc]initWithString: [MyDirectory stringByAppendingPathComponent:#"mydb.db"]];
//Status.text = MyDBPath;
const char *Database = [MyDBPath UTF8String];
if (sqlite3_open(Database, &MyConnection) == SQLITE_OK)
{
Status.text = #"Build Connection Successfully...!";
}
else
{
Status.text = #"Failed to open database...!";
}
[super viewDidLoad];
}
- (void) Find
{
const char *Database = [MyDBPath UTF8String];
sqlite3_stmt *SQLStatement;
NSString *Query;
if (sqlite3_open(Database, &MyConnection) == SQLITE_OK)
{
Query = [NSString stringWithFormat:#"SELECT EmpName FROM EmpLogin WHERE EmpID=\"%#\"",MyText.text];
if (sqlite3_prepare_v2(MyConnection, [Query UTF8String], 0, &SQLStatement, nil) == SQLITE_OK)
{
while (sqlite3_step(SQLStatement) == SQLITE_ROW)
{
NSString *Name = [[NSString alloc]
initWithUTF8String:(const char *) sqlite3_column_text(SQLStatement, 0)];
TextResult.text = Name;
}
if (TextResult.text.length > 0)
{
Status.text = #"Result found";
}
else
{
NSLog(#"%s", sqlite3_errmsg(MyConnection));
Status.text = #"Result not found";
TextResult.text = #"";
}
sqlite3_finalize(SQLStatement);
}
else
{
//NSString *decode = [[NSString alloc]initWithCString:Query_Stmt encoding:NSUTF8StringEncoding];
//Status.text = decode;
Status.text = #"Query execution Failed...!";
}
sqlite3_close(MyConnection);
}
}
Sqlite3_step(SQLStatement) == SQLITE_ROW __ nor working

Answer 1

Yes i resolved the issue…!!!!
actually i just change the path of the directory to direct to my DB path.
here is my final and working code… anyway thanks #HotLicks,,, #CL. :) :)
This works like a charm … :)
- (void) Find
{
MyDBPath = #"/Users/zaibi/Documents/IOSProjects/mydb.db";
MyDatabase = [MyDBPath UTF8String];
sqlite3_stmt *SQLStatement;
NSString *Query;
//NSString *decode = [[NSString alloc]initWithCString:Database encoding:NSUTF8StringEncoding];
//NSLog(#"%#",decode);
if (sqlite3_open(MyDatabase, &MyConnection) == SQLITE_OK)
{
Query = [NSString stringWithFormat:#"SELECT EmpName FROM EmpLogin WHERE EmpID=\"%#\"",MyText.text];
if (sqlite3_prepare_v2(MyConnection, [Query UTF8String], -1, &SQLStatement, nil) == SQLITE_OK)
{
if (sqlite3_step(SQLStatement) == SQLITE_ROW)
{
NSString *Name = [[NSString alloc]
initWithUTF8String:(const char *) sqlite3_column_text(SQLStatement, 0)];
TextResult.text = Name;
Status.text = #"Result found";
}
else
{
NSLog(#"%s", sqlite3_errmsg(MyConnection));
Status.text = #"Result not found";
TextResult.text = #"";
}
sqlite3_finalize(SQLStatement);
}
else
{
NSLog(#"%s", sqlite3_errmsg(MyConnection));
Status.text = #"Query execution Failed...!";
}
sqlite3_close(MyConnection);
}
}
while this way of accessing the DB is just confusing… :/
NSString *MyDirectory;
NSArray *DirectoryPaths;
// Get the documents directory
DirectoryPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
MyDirectory = [DirectoryPaths objectAtIndex:0];
// Build the path to the database file
MyDBPath = [[NSString alloc]initWithString: [MyDirectory stringByAppendingPathComponent:#"mydb.db"]];
//Status.text = MyDBPath;

Answer 2

Sometimes it helps to read the documentation:
If the nByte argument is less than zero, then zSql is read up to the
first zero terminator. If nByte is non-negative, then it is the
maximum number of bytes read from zSql.