http://beyondrelational.com/modules/2/blogs/80/posts/10768/day-75-plsql-13-how-to-make-custom-aggregate-function-in-oracle.aspx In this article, we will look into creating our own Aggregate Function in Oracle. User-defined aggregates are a feature of the Extensibility Framework.It is possbil...
to secure intellectual property written in PL/SQL is weak I also felt it was intriguing that Oracle has made it "easy" for anyone to understand how to recover source code in 9i and lower I also find it interesting that Oracle has shipped API's since the beginning of PL/SQL ...
I’m going to run a Query, that takes an input value, and then goes ‘to sleep’ for a few seconds. PLSQL --23ai example-- dbms_session.sleep replaces dbms_lock_sleep;create or replacefunction takes_awhile (xininteger)returnBOOLEANISBEGINdbms_session.sleep(x);returntrue;EXCEPTIONwhenot...
In the above example, we first type a colon (:) immediately followed by the variable name. This is a very simple way to reference the bind variable. If we want to change the bind variable in SQL*plus, then we need to write the PL/SQL block. In the third step, we can display the...
Find stuff in the database! I like the advanced search. I might set it to search everything by default, but I always like to know what my options are. Don’t worry about case – we auto UPPER the search string. If you want a whole word search, then be sure NOT to...
You make the correct claim that you might miss an instance where you should have escaped a string. This is true (however I think it is one of the easiest security flaws to avoid & detect). I never got around to it but I was once going to write a database API layer in C++ that ...
The best way to check for overdue issues is to write a package that queries the HT_ISSUES table. If it finds any overdue issues, the package initiates an email to the Project Lead. This procedure checks for issues by project so that the project lead can receive just one email with all ...
ORA-29285: file write error is one of the errors which may get while doing file handling operation in theoracle database File handling operations are creating a new file on the Operating system, updating or modifying it. This function is used quite often in PLSQL for file manipulation ...
Using all "Q" in the string just results in the buffer being filled with 'Q' characters. No need to loop or write a separate function. Good Luck, Kent Julian Hansen🇿🇦 2012/9/04 @ged325 that will produce this abc00000000000000000000000000000000Q ...
英文原文如下: At a fundamental level it's important to understand how JavaScript timers work. Often times they behave unintuitively because of the single thread which they are in. Let's start by High Performance JavaScript 读书笔记(六) never gets close to affecting the user experience. It’...