Now it's time to create functions, Create a function GetAllEmployee() that will return all the employees, see listing 10. CREATE OR REPLACE FUNCTION GetAllEmployees() RETURNS Employees LANGUAGE SQL AS $$ SELECT * FROM Employees; $$; Listing 10. Figure11. The 'Select' statement...
I’ve always appreciated the CREATE OR REPLACE functionality in Oracle for views, packages and triggers, and I’ve often wanted a similar CREATE OR REPLACE TABLE. Many times, I’ll find myself needing to quickly drop and re-create a table while I’m designing it. This is tedious, becaus...
"Settings" in DLL project properties and app.config file "The function evaluation requires all threads to run" while accessing music library through wmp.dll "The left-hand side of an assignment must be a variable, property or indexer". Help? "The remote server returned an error: (401) Un...
It is quite simple to create user define Aggregate function in Oracle.For creating a user define aggreagte function, we need - Object type specification Object type body PL/SQL aggregate function So armed with all these information, we can now create our own aggregate function that will perform...
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A view can be created even if the defining query of the view cannot be executed, as long as the CREATE VIEW command has no syntax errors. We call such a view a view with errors. For example, if a view refers to a non-existent table or an invalid column of an existing table, or ...
Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
I want to create one SQL Tuning Set(STS) for the statement running in TEST db.I looked at the package DBMS_SQLTUNE but could not find the proedure/funtion to create STS manually from a query.
How to Create the MySQL REST API DreamFactory can generate REST APIs for a multitude of databases, among themMySQL, Microsoft SQL Server, Oracle,PostgreSQL, and MongoDB. 1. Using DreamFactory To do so, you'll login to the DreamFactory administration interface, navigate toServicesand then enter ...
Oracle SQL Developer is the database IDE and Oracle SQL Developer Data Modeler is our dedicated data modeling solution. Where it gets interesting is that the entire Data Modeler product also runs inside of SQL Developer. When I do demo’s of building quick ad hoc models in SQL Developer, ...