private static async Task <QueryResult> SingleQuery(DatabaseDefinition db, string query)
{
var result = new QueryResult
{
Messages = new List <string>()
};
// var isDbNameUnique = databases.Count(d => d.DatabaseName == db.DatabaseName) == 1;
// var friendlyDbName = db.DatabaseName;
// if (!isDbNameUnique)
// {
// friendlyDbName += " - " + db.Server.DisplayName;
// }
var friendlyDbName = $"{db.DatabaseName} - {db.Server.DisplayName}";
var builder = new SqlConnectionStringBuilder(db.Server.ConnectionString)
{
InitialCatalog = db.DatabaseName
};
using (SqlConnection connection = new SqlConnection(builder.ConnectionString))
{
try
{
Debug.WriteLine($"connecting to {friendlyDbName}");
await connection.OpenAsync();
var command = connection.CreateCommand();
command.CommandText = query;
Debug.WriteLine("querying " + friendlyDbName);
using (var dataReader = await command.ExecuteReaderAsync())
{
Debug.WriteLine($"reading results from {friendlyDbName}");
result.ResultTable = ReadTable(dataReader);
result.ResultTable.TableName = friendlyDbName;
Debug.WriteLine($"finished reading results from {friendlyDbName}");
// Add a column that shows which DB it came from.
var sourceCol = new DataColumn("Source Database", typeof(string));
result.ResultTable.Columns.Add(sourceCol);
foreach (var col in result.ResultTable.Columns.Cast <DataColumn>().ToList())
{
if (col != sourceCol)
{
col.SetOrdinal(col.Ordinal + 1);
}
}
sourceCol.SetOrdinal(0);
foreach (var row in result.ResultTable.Rows.Cast <DataRow>())
{
row[sourceCol] = friendlyDbName;
}
}
}
catch (Exception ex)
{
result.Messages.Add($"Error on {friendlyDbName}: {ex.Message}");
}
}
return(result);
}
private static async Task <QueryResult> SingleQuery(DatabaseDefinition db, string query, int sqlTimeout)
{
var result = new QueryResult
{
Messages = new List <string>()
};
var friendlyDbName = db.DatabaseName + " - " + db.Server.DisplayName;
var builder = new SqlConnectionStringBuilder(db.Server.ConnectionString);
builder.InitialCatalog = db.DatabaseName;
using (SqlConnection connection = new SqlConnection(builder.ConnectionString))
{
// Adds poor man support for SMSS 'GO' keyword to split sql into separate command batches.
// In this mode, the last sql statement is expected to be the one that returns the results.
query += "\nGO"; // make sure last batch is executed.
var sql = query
.Split(new string[2] {
"\n", "\r"
}, StringSplitOptions.RemoveEmptyEntries)
.Aggregate(new SqlTextState {
CurrentCommand = "", CompleteCommands = new List <string>()
}, (s, line) =>
{
if (line.ToUpperInvariant().Trim() == "GO")
{
s.CompleteCommands.Add(s.CurrentCommand);
s.CurrentCommand = "";
}
else
{
s.CurrentCommand += line + "\n";
}
return(s);
});
try
{
Debug.WriteLine("connecting to " + friendlyDbName);
await connection.OpenAsync();
int i = 0;
foreach (var sqlCommand in sql.CompleteCommands)
{
var command = connection.CreateCommand();
command.CommandText = sqlCommand;
command.CommandTimeout = sqlTimeout;
Debug.WriteLine("querying " + friendlyDbName);
if (i < sql.CompleteCommands.Count - 1) // if not last one
{
await command.ExecuteNonQueryAsync();
}
else
{
using (var dataReader = await command.ExecuteReaderAsync())
{
Debug.WriteLine("reading results from " + friendlyDbName);
result.ResultTable = ReadTable(dataReader);
result.ResultTable.TableName = friendlyDbName;
Debug.WriteLine("finished reading results from " + friendlyDbName);
// Add columns that shows which DB it came from.
var sourceServerCol = new DataColumn("Server", typeof(string));
var sourceDatabaseCol = new DataColumn("Database", typeof(string));
result.ResultTable.Columns.Add(sourceServerCol);
result.ResultTable.Columns.Add(sourceDatabaseCol);
foreach (var col in result.ResultTable.Columns.Cast <DataColumn>().ToList())
{
if (col != sourceServerCol && col != sourceDatabaseCol)
{
col.SetOrdinal(col.Ordinal + 2);
}
}
sourceServerCol.SetOrdinal(0);
sourceDatabaseCol.SetOrdinal(1);
foreach (var row in result.ResultTable.Rows.Cast <DataRow>())
{
row[sourceServerCol] = db.Server.DisplayName;
row[sourceDatabaseCol] = db.DatabaseName;
}
}
}
i++;
}
}
catch (Exception ex)
{
result.Messages.Add($"Error on {friendlyDbName}: {ex.Message}");
}
}
return(result);
}
