Question

I have data stored in a sqlite3 database and have several places that I read and write data to and from the database. The problem I am running into is that if the SQL statement gets to be very long the sqlite3_prepare_v2 method returns an error.

This code works:

NSString *strSQL = @"UPDATE commandList SET displayName=?, type=?, formula=?, controlButton=?, sort=? WHERE pk=?;";
const char *sql = [strSQL UTF8String];
if (sqlite3_prepare_v2(database, sql, -1, &dehydrate_statment, NULL) != SQLITE_OK) {
    NSLog(@"Error: failed to create update statement with message '%@'.", sqlite3_errmsg(database));
}

But this code errors out:

NSString *strSQL = @"UPDATE commandList SET displayName=?, type=?, formula=?, onFormula=?, offFormula=?, controlButton=?, sort=? WHERE pk=?;";
const char *sql = [strSQL UTF8String];
if (sqlite3_prepare_v2(database, sql, -1, &dehydrate_statment, NULL) != SQLITE_OK) {
    NSLog(@"Error: failed to create update statement with message '%@'.", sqlite3_errmsg(database));
}

note the only difference is the 1st line.

Answer 1

The problem doesn’t exist in the iPhone simulator so it must be something else.