SQL Query optimization is a process of writing optimized SQL queries to improve database performance. It is one of the factors that affect application performance. When working with large-scale data, even the most minor change can have a dramatic impact on performance. Top 10 ways to improve performance Indexing: Proper indexing ensures optimal access to […]
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The FETCH FIRST n ROW ONLY clause is used to limit the result set of a query to a specified number of rows. It is particularly useful when you are only interested in retrieving a subset of the total records. Retrieving the entire result table from the query can be inefficient. You can specify this
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A DB2 null Indicator/value represents missing or unknown information at the column level. When a column is set as null, it can mean one of two things: the attribute is not applicable for certain occurrences of the entity, or the attribute applies to all entity occurrences, but the information may not always be known. It
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DB2 locking and concurrency is a critical part of DB2 as well as batch performance. Batch update jobs processing large amounts of data will need to have restart logic through the use of the COMMIT statement and a program data save area. This will identify the restart point. Commit frequency should be an input parameter
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