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데이터베이스에 값을 삽입하려고하지만 "SQL 오류 또는 누락 된 데이터베이스"라는 오류 메시지를 준비하는 동안 누군가가이 오류의 의미와 방법을 알 수 있습니까? 하나는 이것을 해결할 수 있습니다 ????? 데이터베이스 내 경로는명세서 준비 중 "SQL 오류 또는 누락 된 데이터베이스"오류
2010-07-22 14 : 34 : 59.933 데이터베이스 응용 프로그램/데이터베이스/사용자/nuzhat/Library/Application Support/iPhone Simulator/사용자/응용 프로그램/C50A0188-2A9A-487F-951C-6E7FFCE3CFBB/Documents/UserName.db3
내 코드는 다음과 같습니다. - // 데이터베이스 연결을 열고 모든 개체에 대한 최소 정보를 검색합니다. - (무효) initializeDatabase {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"TextWandiPhone.db3"];
//for second database
NSString *path1 = [documentsDirectory stringByAppendingPathComponent:@"UserName.db3"];
// Open the database. The database was prepared outside the application.
if (sqlite3_open([path UTF8String], &database) == SQLITE_OK)
{
// Get the primary key for all books.
const char *sql = "SELECT CountryName FROM Country";
sqlite3_stmt *statement = nil;
// Preparing a statement compiles the SQL query into a byte-code program in the SQLite library.
// The third parameter is either the length of the SQL string or -1 to read up to the first null terminator.
if (sqlite3_prepare_v2(database, sql, -1, &statement, NULL) == SQLITE_OK)
{
// int success=sqlite3_step(statement);
// We "step" through the results - once for each row.
while(sqlite3_step(statement) == SQLITE_ROW)
{
// if(success == SQLITE_ROW) {
//NSLog(@"value of success %d",success);
// The second parameter indicates the column index into the result set.
char *str = (char *)sqlite3_column_text(statement, 0);
NSString *country = (str) ? [NSString stringWithUTF8String:str] : @"";
//NSLog(@"value :%@",country);
//NSLog(@"after running query");
//NSLog(@"after initializing array");
[arrCountry addObject:country];
//NSLog(@"after adding values");
//[return arrCountry];
}//while
//NSLog(@"values of array %@",arrCountry);
}//aft prepare
sqlite3_finalize(statement);
}//aft open
//for second database
//else if (sqlite3_open([path1 UTF8String], &database1) == SQLITE_OK)
if (sqlite3_open([path1 UTF8String], &database1) == SQLITE_OK)
{
// Get the primary key for all books.
const char *sql1 = "SELECT UserID FROM User";
sqlite3_stmt *statement1=nil;
// Preparing a statement compiles the SQL query into a byte-code program in the SQLite library.
// The third parameter is either the length of the SQL string or -1 to read up to the first null terminator.
int value1=sqlite3_prepare_v2(database1, sql1, -1, &statement1, NULL);
NSLog(@"value of preparing stmt %d",value1);
if (value1== SQLITE_OK)
{
// int success=sqlite3_step(statement);
// We "step" through the results - once for each row.
while(sqlite3_step(statement1) == SQLITE_ROW)
{
// if(success == SQLITE_ROW) {
//NSLog(@"value of success %d",success);
// The second parameter indicates the column index into the result set.
int userid = sqlite3_column_int(statement1, 0);
//NSString *country = (str) ? [NSString stringWithUTF8String:str] : @"";
//NSLog(@"value :%@",country);
//NSLog(@"after running query");
//NSLog(@"after initializing array");
NSString *strUserId = [[NSNumber numberWithInt:userid] stringValue];
[arrUser addObject:strUserId];
//[return arrCountry];
}
NSLog(@"values of array %@",arrUser);
}//aft prepare
// "Finalize" the statement - releases the resources associated with the statement.
//sqlite3_finalize(statement1);
}//aft opening 2nd database
else {
// Even though the open failed, call close to properly clean up resources.
sqlite3_close(database);
sqlite3_close(database1);
NSAssert1(0, @"Failed to open database with message '%s'.", sqlite3_errmsg(database));
NSAssert1(0, @"Failed to open database with message '%s'.", sqlite3_errmsg(database1));
// Additional error handling, as appropriate...
}
} 여기 사전에
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