protected BulkCopyRowsCopied MultipleRowsCopy1 <T>(
MultipleRowsHelper <T> helper, DataConnection dataConnection, BulkCopyOptions options, IEnumerable <T> source)
{
helper.StringBuilder
.AppendFormat("INSERT INTO {0}", helper.TableName).AppendLine()
.Append("(");
foreach (var column in helper.Columns)
{
helper.StringBuilder
.AppendLine()
.Append("\t")
.Append(helper.SqlBuilder.Convert(column.ColumnName, ConvertType.NameToQueryField))
.Append(",");
}
helper.StringBuilder.Length--;
helper.StringBuilder
.AppendLine()
.Append(")");
helper.StringBuilder
.AppendLine()
.Append("VALUES");
helper.SetHeader();
foreach (var item in source)
{
helper.StringBuilder
.AppendLine()
.Append("(");
helper.BuildColumns(item);
helper.StringBuilder.Append("),");
helper.RowsCopied.RowsCopied++;
helper.CurrentCount++;
if (helper.CurrentCount >= helper.BatchSize || helper.Parameters.Count > 10000 || helper.StringBuilder.Length > 100000)
{
helper.StringBuilder.Length--;
if (!helper.Execute())
{
return(helper.RowsCopied);
}
}
}
if (helper.CurrentCount > 0)
{
helper.StringBuilder.Length--;
helper.Execute();
}
return(helper.RowsCopied);
}
protected BulkCopyRowsCopied MultipleRowsCopy2(
MultipleRowsHelper helper, IEnumerable source, string from)
{
helper.StringBuilder
.AppendFormat("INSERT INTO {0}", helper.TableName).AppendLine()
.Append("(");
foreach (var column in helper.Columns)
{
helper.StringBuilder
.AppendLine()
.Append("\t");
helper.SqlBuilder.Convert(helper.StringBuilder, column.ColumnName, ConvertType.NameToQueryField);
helper.StringBuilder.Append(",");
}
helper.StringBuilder.Length--;
helper.StringBuilder
.AppendLine()
.Append(")");
helper.SetHeader();
foreach (var item in source)
{
helper.StringBuilder
.AppendLine()
.Append("SELECT ");
helper.BuildColumns(item);
helper.StringBuilder.Append(from);
helper.StringBuilder.Append(" UNION ALL");
helper.RowsCopied.RowsCopied++;
helper.CurrentCount++;
if (helper.CurrentCount >= helper.BatchSize || helper.Parameters.Count > 10000 || helper.StringBuilder.Length > 100000)
{
helper.StringBuilder.Length -= " UNION ALL".Length;
if (!helper.Execute())
{
return(helper.RowsCopied);
}
}
}
if (helper.CurrentCount > 0)
{
helper.StringBuilder.Length -= " UNION ALL".Length;
helper.Execute();
}
return(helper.RowsCopied);
}
