DSN_FUNCTION_TABLE - user-defined functions DSN_PREDICAT_TABLE - predicates (except predicates in CASE WHEN clauses) DSN_STRUCT_TABLE - query blocks PLAN_TABLE - access path of subqueries In addition, the complete or partial definition text might appear in EXPLAIN tables like DSN_FUNCTION_TABLE...
the MySQL optimizer considers many techniques to efficiently performthe lookups involved in an SQL query. A query on a huge table can be performedwithout reading all the rows; a join involving several tables can be performedwithout comparing every combination of rows. The set of operations...
User-defined Functions Stored Procedures Autonomous Transaction System Catalogs and System Views Schemas Configuring Running Parameters Appendix FAQs Developer Guide(Centralized) Tool Guide Feature Description Feature Guide API Reference Alarm Handling
Functions often compute a return value. The return value is "returned" back to the "caller": ```Kin porogaramu_ntoya myFunction(a, b) { # Function returns the product of a and b return a * b; } # Function is called, the return value will end up in x reka x = myFunction(4...
Some operators and functions that are not supported by HQE are executed by PQE. PQE is less efficient than HQE. If an execution plan contains the ExecuteExternalSQL operator, PQE is used. Example 1: An SQL statement uses PQE. CREATE TABLE pqe_test(a text); INSERT INTO pqe_test VALUES...
A class is a user-defined data type that consists of attributes and methods. Attributes are variables that hold data specific to an instance of the class, such as a person’s name, age, or address. Methods are functionsthat define the behavior of the class, such as calculating a person’...
A function returns the value and type of the last expression evaluated. Functions will always have a return value, although it may not be meaningful. The 'return' statement can be used to terminate the function before its last statement, e.g.: ...
Formatting the execution plan The format parameter for the functions in the DBMS_XPLAN package is highly customizable and can display as little (high-level) or as much (low-level) details as required or desired in the plan output. There are three pre-defined formats available: BASIC The...
one of the followingcategories: Account Management Administration Compound Statements Data Definition Data Manipulation Data Types Functions Functions and Modifiers for Use with GROUP BY Geographic Features Help Metadata Language Structure Plugins Procedures Table Maintenance Transactions User-Defined Functions ...
You can also intuitively update each individual FIS rule base to check possible variations in output generation to further improve the performance of the support system. Helper Functions Get function fis = constructFIS(name,numMFs,in1range,in2range,outrange,in1,in2,out) % Construct a Sugeno ...