Efficiently Inserting Multiple Rows into SQL Tables
SQL database management often involves adding data. For large datasets, inserting multiple rows individually using separate INSERT
statements is inefficient. Fortunately, SQL offers a streamlined method to insert multiple rows with a single query, significantly boosting performance. This technique is particularly beneficial when dealing with bulk data insertion.
This approach, supported by SQL Server 2008 and later versions, uses a concise syntax:
INSERT INTO MyTable (Column1, Column2, Column3) VALUES (Value1, Value2, Value3), (Value1, Value2, Value3), ...
Let's illustrate with an example. Suppose we have a table MyTable
with columns Person
, Id
, and Office
. To insert four rows, we can use the following single INSERT
statement:
INSERT INTO MyTable (Person, Id, Office) VALUES ('John', 123, 'Lloyds Office'), ('Jane', 124, 'Lloyds Office'), ('Billy', 125, 'London Office'), ('Miranda', 126, 'Bristol Office');
This single query accomplishes the same task as four individual INSERT
statements, minimizing code complexity and improving database write efficiency. This method is a crucial technique for handling large-scale data insertion in SQL databases.
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