Bulk Loading data into COLUMNSTORE table

buy Misoprostol oral Bulk loading is the most performant way to move data into a columnstore index because it operates on batches of rows. Bulk loading fills rowgroups to maximum capacity and compresses them directly into the columnstore. Only rows at the end of a load that don’t meet the minimum of 102,400 rows per rowgroup go to the deltastore. For understanding bulk load and minimal logging see Fastest Data Loading using Bulk Load and Minimal Logging
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Bulk Loading data into HEAP versus CLUSTERED Table

Bulk Loading into HEAP

Generally, the fastest way to load data into SQL Server table is by Bulk Loading data into HEAP using  click here TABLOCK hint on destination table which facilitates minimally logging. For more details see Fastest Data Loading using Bulk Load and Minimal Logging 
The few constraints for loading data minimally logged using TABLOCK hint:

  • The database must be in simple or bulk logged recovery model.
  • The destination table must be without Clustered Index.
  • There must be no NON-Clustered index on the destination table.

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Understanding Transacation Log and Recovery Model

Every SQL Server database has a transaction log that records all transactions and the database modifications that are made by each transaction. The transaction log is a critical component of the database and, if there is a system failure, the transaction log might be required to bring your database back to a consistent state. This guide provides information about the architecture of the transaction log and its various different uses in SQL Server.

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Fastest Data Loading using Bulk Load and Minimal Logging

Understanding Bulk Load Operations

There are two types of INSERTs in SQL server, first is singleton INSERT which inserts rows one by one and second type is BULK INSERT which feeds a continuous stream of data into a table, so this type of INSERT is much faster than singleton inserts. Read more Fastest Data Loading using Bulk Load and Minimal Logging