/// <summary>
/// This tests the SQLite in-memory DB by creating some data and then selecting it
/// </summary>
public static void TestDatabase()
{
var watch = new DiagnosticTimer();
var db = new SQLiteDatabase(":memory:");
watch.Checkpoint("Create DB");
db.ExecuteNonQuery("CREATE TABLE Root (intIndex INTEGER PRIMARY KEY, strIndex TEXT, nr REAL)");
watch.Checkpoint("Create table 1");
db.ExecuteNonQuery("CREATE TABLE This (intIndex INTEGER PRIMARY KEY, strIndex TEXT, nr REAL)");
watch.Checkpoint("Create table 2");
db.ExecuteNonQuery("CREATE INDEX RootStrIndex ON Root (strIndex)");
const string insertCommand = "INSERT INTO Root VALUES (?,?,?)";
int i;
var stmt = new SQLiteVdbe(db, insertCommand);
long key = 1999;
for (i = 0; i < 10000; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
stmt.Reset();
stmt.BindLong(1, key);
stmt.BindText(2, key.ToString());
stmt.BindDouble(3, 12.34);
stmt.ExecuteStep();
}
stmt.Close();
watch.Checkpoint("Insert 10000 rows");
i = 0;
var c1 = new SQLiteVdbe(db, "SELECT * FROM Root ORDER BY intIndex LIMIT 5000");
while (c1.ExecuteStep() != Sqlite3.SQLITE_DONE)
{
long intKey = c1.Result_Long(0);
key = intKey;
i += 1;
}
c1.Close();
var diagnostic = watch.LastCheckpoint("Select 5000 sorted rows");
MessageBox.Show(diagnostic);
}
private static void TestCsharpSqlite()
{
SQLiteDatabase db;
SQLiteVdbe stmt;
SQLiteVdbe c1, c2;
bool found;
int i;
string databaseName = "Benchmark_cs-SQLite.sqlite";
if (File.Exists(databaseName))
{
File.Delete(databaseName);
}
db = new SQLiteDatabase(databaseName);
for (i = 0; i < PRAGMA_Commands.Length; i++)
{
db.ExecuteNonQuery(PRAGMA_Commands[i]);
}
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
for (i = 0; i < CREATE_Commands.Length; i++)
{
db.ExecuteNonQuery(CREATE_Commands[i]);
}
stmt = new SQLiteVdbe(db, INSERT_Command);
long start = DateTime.Now.Ticks;
long key = 1999;
for (i = 0; i < nRecords; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
stmt.Reset();
stmt.BindLong(1, key);
stmt.BindText(2, key.ToString());
stmt.ExecuteStep();
}
stmt.Close();
db.ExecuteNonQuery("END");
timer[1, 0] = DateTime.Now.Ticks - start;
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
start = DateTime.Now.Ticks;
c1 = new SQLiteVdbe(db, SELECT_Bind_i);
c2 = new SQLiteVdbe(db, SELECT_Bind_s);
key = 1999;
for (i = 0; i < nRecords; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
c1.Reset();
c1.BindLong(1, key);
c1.ExecuteStep();
c2.Reset();
c2.BindText(1, key.ToString());
c2.ExecuteStep();
long id = (long)c1.Result_Long(0);
Debug.Assert(id == (long)c2.Result_Long(0));
}
c1.Close();
c2.Close();
db.ExecuteNonQuery("END");
timer[1, 1] = DateTime.Now.Ticks - start;
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
start = DateTime.Now.Ticks;
key = Int64.MinValue;
i = 0;
c1 = new SQLiteVdbe(db, SELECT_Command_i);
while (c1.ExecuteStep() != Sqlite3.SQLITE_DONE)
{
long intKey = (long)c1.Result_Long(0);
Debug.Assert(intKey >= key);
key = intKey;
i += 1;
}
c1.Close();
Debug.Assert(i == nRecords);
String strKey = "";
i = 0;
c2 = new SQLiteVdbe(db, SELECT_Command_s);
while (c2.ExecuteStep() != Sqlite3.SQLITE_DONE)
{
string recStrKey = (string)c2.Result_Text(1);
Debug.Assert(recStrKey.CompareTo(strKey) >= 0);
strKey = recStrKey;
i += 1;
}
c2.Close();
Debug.Assert(i == nRecords);
timer[1, 2] = DateTime.Now.Ticks - start;
db.ExecuteNonQuery("END");
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
start = DateTime.Now.Ticks;
key = 1999;
stmt = new SQLiteVdbe(db, DELETE_Bind);
for (i = 0; i < nRecords; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
stmt.Reset();
stmt.BindLong(1, key);
stmt.ExecuteStep();
}
stmt.Close();
db.ExecuteNonQuery("END");
timer[1, 3] = DateTime.Now.Ticks - start;
db.CloseDatabase();
#if NET_35
Sqlite3.Shutdown();
#else
Sqlite3.sqlite3_shutdown();
#endif
}
private static void TestcsSQLite()
{
SQLiteDatabase db;
SQLiteVdbe stmt;
SQLiteVdbe c1, c2;
bool found;
int i;
string databaseName = "Benchmark_cs-SQLite.sqlite";
Console.WriteLine("\n\r" + databaseName);
if (File.Exists(databaseName))
{
File.Delete(databaseName);
}
db = new SQLiteDatabase(databaseName);
for (i = 0; i < PRAGMA_Commands.Length; i++)
{
db.ExecuteNonQuery(PRAGMA_Commands[i]);
}
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
for (i = 0; i < CREATE_Commands.Length; i++)
{
db.ExecuteNonQuery(CREATE_Commands[i]);
}
stmt = new SQLiteVdbe(db, INSERT_Command);
long start = DateTime.Now.Ticks;
long key = 1999;
for (i = 0; i < nRecords; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
stmt.Reset();
stmt.BindLong(1, key);
stmt.BindText(2, key.ToString());
stmt.ExecuteStep();
}
stmt.Close();
db.ExecuteNonQuery("END");
Console.WriteLine("inserting " + nRecords + " records: "
+ ((DateTime.Now.Ticks - start) * 10e-8 + .05).ToString("#.0") + " seconds");
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
start = DateTime.Now.Ticks;
c1 = new SQLiteVdbe(db, SELECT_Bind_i);
c2 = new SQLiteVdbe(db, SELECT_Bind_s);
key = 1999;
for (i = 0; i < nRecords; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
c1.Reset();
c1.BindLong(1, key);
c1.ExecuteStep();
c2.Reset();
c2.BindText(1, key.ToString());
c2.ExecuteStep();
long id = (long)c1.Result_Long(0);
Debug.Assert(id == ( long)c2.Result_Long(0));
}
c1.Close();
c2.Close();
db.ExecuteNonQuery("END");
Console.WriteLine("performing " + nRecords * 2 + " index searches: "
+ ((DateTime.Now.Ticks - start) * 10e-8 + .05).ToString("#.0") + " seconds");
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
start = DateTime.Now.Ticks;
key = Int64.MinValue;
i = 0;
c1 = new SQLiteVdbe(db, SELECT_Command_i);
while (c1.ExecuteStep() != csSQLite.SQLITE_DONE)
{
long intKey = (long)c1.Result_Long(0);
Debug.Assert(intKey >= key);
key = intKey;
i += 1;
}
c1.Close();
Debug.Assert(i == nRecords);
String strKey = "";
i = 0;
c2 = new SQLiteVdbe(db, SELECT_Command_s);
while (c2.ExecuteStep() != csSQLite.SQLITE_DONE)
{
string recStrKey = (string)c2.Result_Text(1);
Debug.Assert(recStrKey.CompareTo(strKey) >= 0);
strKey = recStrKey;
i += 1;
}
c2.Close();
Debug.Assert(i == nRecords);
Console.WriteLine("iterating through " + (nRecords * 2) + " records: "
+ ((DateTime.Now.Ticks - start) * 10e-8 + .05).ToString("#.0") + " seconds");
db.ExecuteNonQuery("END");
db.ExecuteNonQuery("BEGIN EXCLUSIVE");
start = DateTime.Now.Ticks;
key = 1999;
stmt = new SQLiteVdbe(db, DELETE_Bind);
for (i = 0; i < nRecords; i++)
{
key = (3141592621L * key + 2718281829L) % 1000000007L;
stmt.Reset();
stmt.BindLong(1, key);
stmt.ExecuteStep();
}
stmt.Close();
db.ExecuteNonQuery("END");
Console.WriteLine("deleting " + nRecords + " records: "
+ ((DateTime.Now.Ticks - start) * 10e-8 + .05).ToString("#.0") + " seconds");
db.CloseDatabase();
}
private static void TestcsSQLite()
{
SQLiteDatabase db;
SQLiteVdbe stmt;
SQLiteVdbe c1, c2;
bool found;
int i;
string databaseName = "Benchmark_cs-SQLite.sqlite";
Console.WriteLine( "\n\r" + databaseName );
if ( File.Exists( databaseName ) ) File.Delete( databaseName );
db = new SQLiteDatabase( databaseName );
for (i = 0; i < PRAGMA_Commands.Length; i++) {db.ExecuteNonQuery( PRAGMA_Commands[i]);}
db.ExecuteNonQuery( "BEGIN EXCLUSIVE" );
for (i = 0; i < CREATE_Commands.Length; i++) {db.ExecuteNonQuery( CREATE_Commands[i]);}
stmt = new SQLiteVdbe( db, INSERT_Command );
long start = DateTime.Now.Ticks;
long key = 1999;
for ( i = 0 ; i < nRecords ; i++ )
{
key = ( 3141592621L * key + 2718281829L ) % 1000000007L;
stmt.Reset();
stmt.BindLong( 1, key );
stmt.BindText( 2, key.ToString() );
stmt.ExecuteStep();
}
stmt.Close();
db.ExecuteNonQuery( "END" );
timer[1, 0] = DateTime.Now.Ticks - start;
Console.WriteLine( "inserting " + nRecords + " records: "
+ ( (timer[1,0] ) * 10e-8 + .05).ToString( "#.0" ) + " seconds" );
db.ExecuteNonQuery( "BEGIN EXCLUSIVE" );
start = DateTime.Now.Ticks;
c1 = new SQLiteVdbe( db, SELECT_Bind_i );
c2 = new SQLiteVdbe( db, SELECT_Bind_s);
key = 1999;
for ( i = 0 ; i < nRecords ; i++ )
{
key = ( 3141592621L * key + 2718281829L ) % 1000000007L;
c1.Reset();
c1.BindLong( 1, key );
c1.ExecuteStep();
c2.Reset();
c2.BindText( 1, key.ToString() );
c2.ExecuteStep();
long id = (long)c1.Result_Long( 0 );
Debug.Assert( id == ( long)c2.Result_Long(0) );
}
c1.Close();
c2.Close();
db.ExecuteNonQuery( "END" );
timer[1, 1] = DateTime.Now.Ticks - start;
Console.WriteLine( "performing " + nRecords * 2 + " index searches: "
+ ( ( timer[1, 1] ) * 10e-8 + .05 ).ToString( "#.0" ) + " seconds" );
db.ExecuteNonQuery( "BEGIN EXCLUSIVE" );
start = DateTime.Now.Ticks;
key = Int64.MinValue;
i = 0;
c1 = new SQLiteVdbe( db, SELECT_Command_i );
while ( c1.ExecuteStep() != csSQLite.SQLITE_DONE )
{
long intKey = (long)c1.Result_Long( 0 );
Debug.Assert( intKey>= key );
key = intKey;
i += 1;
}
c1.Close();
Debug.Assert( i == nRecords );
String strKey = "";
i = 0;
c2 = new SQLiteVdbe( db, SELECT_Command_s );
while ( c2.ExecuteStep() != csSQLite.SQLITE_DONE )
{
string recStrKey = (string)c2.Result_Text( 1 );
Debug.Assert( recStrKey.CompareTo( strKey ) >= 0 );
strKey = recStrKey;
i += 1;
}
c2.Close();
Debug.Assert( i == nRecords );
timer[1, 2]= DateTime.Now.Ticks - start ;
Console.WriteLine( "iterating through " + ( nRecords * 2 ) + " records: "
+ ( ( timer[1, 2] ) * 10e-8 + .05).ToString( "#.0" ) + " seconds" );
db.ExecuteNonQuery( "END" );
db.ExecuteNonQuery( "BEGIN EXCLUSIVE" );
start = DateTime.Now.Ticks;
key = 1999;
stmt = new SQLiteVdbe( db, DELETE_Bind);
for ( i = 0 ; i < nRecords ; i++ )
{
key = ( 3141592621L * key + 2718281829L ) % 1000000007L;
stmt.Reset();
stmt.BindLong( 1, key );
stmt.ExecuteStep();
}
stmt.Close();
db.ExecuteNonQuery( "END" );
timer[1, 3] = DateTime.Now.Ticks - start;
Console.WriteLine( "deleting " + nRecords + " records: "
+ ( ( timer[1, 3] ) * 10e-8 + .05 ).ToString( "#.0" ) + " seconds" );
db.CloseDatabase();
csSQLite.sqlite3_shutdown();
}