Db2 is a family of data management products, including database servers, developed by IBM. They initially supported the relational model, but were extended to support object-relational features and non-relational structures like JSON and XML
Optimize Outer Join queries is a powerful tool for retrieving data from multiple tables. However, if not used judiciously, they…
OUTER JOIN Queries are a valuable tool in SQL, allowing you to retrieve data from multiple tables. However, like any…
A Subquery Join is a combination of a subquery and a join operation in a SQL query. It allows you…
A Cross-Join, also known as a cartesian product, is a type of join operation that returns the combination of every…
Self-Join in DB2 is a process of joining a table to itself. This is done by giving the table two…
A DB2 Hash Join is a type of join operation that uses a hash table to match rows from two…
To perform a merge join in DB2, you can use the JOIN keyword in a SELECT statement along with the…
DB2 Nested Loop JOIN is used when one table is small and the other table is large. The smaller table…
SQL wildcards are used to substitute one or more characters in a string. We use SQL wildcards when we need…
HAVING clause is used to apply a filter on the result of GROUP BY based on the specified condition. The conditions…