Open your application, open the left menu in Application -> Global Variables and see where this variable is defined.
#Scriptcase global variables code#
That means there is no context switching between PL/SQL and SQL and the query inside the macro function is now executed under same snapshot as outer query. You will most likely have to show your code related to that var to get any real help on this. The application can include global variables in the WHERE clause, in the definitions and field names, programming events, etc. Note that this cannot be used for certain things, such as a variable for a table name. This menu shows the global variables being used within the application, the global variable is an external parameter required to application execution. In your query, the predicates in the WHERE clause are evaluated before the expressions in the SELECT list. In Scriptcase the fields are internally treated as local variables PHP, however, at Scriptcase interface it’s necessary to inform these, using keys, so it’s possible to retrieve or assign values to the application fields. The user-defined variable is a reference to whatever value is currently assigned to it at the time the expression is evaluated. SQL Macros have an important advantage over ordinary PL/SQL functions in that they make the reusable SQL code completely transparent to the Optimizer – and that brings big benefits! It makes it possible for the optimizer to transform the original code for efficient execution because the underlying query inside the macro function can be merged into outer query. You can Declare a variable (which must begin with then Set it then use it (in most cases): SET CustomerID 12345 SELECT FROM dbo.Customers WHERE CustomerID CustomerID. var) can be referenced in a WHERE clause. Why Is A SQL Macro Better Than A PL/SQL Function? This tended to have an impact on performance and most people tried to avoid doing it whenever possible. However, by using PL/SQL this created some underlying complexities at execution time since we needed to keep swapping between the SQL context and the PL/SQL context. When doing a set of applications, sometimes you need to use global variables, such as: save the user. In the past, if you wanted to extend the capabilities of SQL, then PL/SQL was the usually the best way to do add additional, more complex processing logic. Global variables and local variables in ScriptCase.
0 kommentar(er)
