insert file data in a SQL table

Question

How can I insert data in a file full of data all together in a table using SQL command?

I am already doing it using foreach but what if I do not want to insert row by row but all together?

Answer 1

If this is SQL Server, then your best bet there would be SqlBulkCopy (with or without a transaction, as you require); for the source you can either load all the data from the file into a DataTable , or in some cases you can create an unbuffered IDataReader that streams the data through the file as needed. The IDataReader approach is more efficient and faster, but more complex unless a convenient IDataReader implementation already exists for your input data (for example, CsvReader for delimited data). The DataTable approach requires all the data to be buffered in-memory first and is slower, but often more convenient.