The order of the operators and their implementations is decided by the query optimizer using a combination of query transformations and physical optimization techniques. While the display is commonly shown in a
Structured Query Language used to manipulate the data with help of queries. The SQL uses some operators to throw queries like SELECT uses to selects a data value and shown on the output screen, Where uses for conditions, Group by uses to...
Python, Ruby and Java are the scripting languages based on object-oriented principles which are used for scripting. • Object Databases: These days OOP concepts have also been introduced in database systems to develop a new DBMS named object databases. These databases store the data directly in...
If you do not specify INTO table_name, the execution plan is stored in the PLAN_TABLE table by default. SET statement_id The statement ID of the explained SQL statement, which can be used to query the execution plan of the statement later. If you do not specify SET statement_id, an ...
The order of the operators and their implementations is decided by the query optimizer using a combination of query transformations and physical optimization techniques. While the display is commonly shown in a tabular format, the plan is in fact tree-shaped. For example, consider the following...