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 ...
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...
INTO table_nameThe table where the execution plan obtained byEXPLAINis to be stored. If you do not specifyINTO table_name, the execution plan is stored in thePLAN_TABLEtable by default. SET statement_idThe statement ID of the explained SQL statement, which can be used to query the executio...
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 ...
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...