SQL Archives - Page 5 of 6 - Philipp Salvisberg's Blog

2018-06-10

2018-06-10

Categories

Oracle

MemOptimized RowStore in Oracle Database 18c

The MemOptimized RowStore introduced in Oracle Database 18c is designed to improve the performance of simple queries accessing data via primary key columns only. An example of such a query is SELECT value FROM t WHERE key = :key where key is the only primary key column of table t. This feature is […]

2018-05-06

Categories

Oracle

Why and How Using the accessible_by_clause

The accessible_by_clause was introduced in Oracle Database 12 Release 1 and extended in Release 2. If you don‘t know this feature, I suggest having a look at the documentation or reading Steven Feuerstein’s blog post. In this blog post, I talk about how to use this feature properly. Consider you have a […]

2018-04-30

Categories

Oracle

Accessible PL/SQL Programs in Oracle Database 18c

I’ve recently installed plscope-utils in an Oracle Database 18c instance. A package body using the SYS.UTL_XML.ParseQuery function failed to compile. The error message was: PLS-00306: wrong number or types of arguments in call to ‘PARSEQUERY’. Fixing that was easy. I just had to pass the new mandatory currUid parameter. But then I’ve got the […]

2017-10-15

Categories

Oracle

Entity Relationship Model for PL/Scope

Today I found a sketch of an ERD from last year when I looked at the new features of PL/Scope in version 12.2. It looked a bit complicated and also wrong. So, I decided to refactor it using SQL Developer Data Modeler and share the result. You find the model in the […]

2017-10-14

Categories

Oracle

Limitations of PL/Scope and How to Deal with Them

My first car was a Renault R5 TX. The motor cooling of this car was really bad. On a hot summer day, it was simply not possible to drive slowly in high traffic without overheating the engine. To cool the engine you could either stop the car, open the front lid and […]

2017-07-11

Categories

Oracle

Simplify the Use of PL/Scope in SQL Developer

In this post, I showed how to do some code analysis with PL/Scope and how the views and packages of the plscope-utils might simplify this task. However, these views and packages are based on dba_* views and it is sometimes not that easy to get such privileges for an additional user in a non-personal database instance. […]

2017-03-17

Categories

Oracle

plscope-utils – Utilities for PL/Scope

PL/Scope was introduced with Oracle Database version 11.1 and covered PL/SQL only. SQL statements such as SELECT, INSERT, UPDATE, DELETE and MERGE were simply ignored. Analysing PL/SQL source code without covering SQL does not provide a lot of value. Hence, PL/Scope was neglected by the Oracle community. But this seems to change with […]

2017-02-06

Categories

Oracle

PL/SQL Cop for Trivadis Coding Guidelines Version 3.2

The PL/SQL Cop tool suite supports the new Trivadis PL/SQL & SQL Coding Guidelines 3.2. Download the new versions from the Download section. So, what’s new? Numbering and Categorisation Scheme The guidelines have been renumbered, extended, categorised by severity (blocker, critical, major, minor and info) and assigned to one or more SQALE characteristics (changeability, […]

2016-09-25

Categories

Oracle

Bitemp Remodeler v0.1.0 Released

I’ve been working on a flexible table API generator for Oracle Databases for several months. A TAPI generator doesn’t sound like a real innovation. But this one contains some features you probably have not seen before in the TAPI generator and hopefully will like it as much as I do. In this post, I will […]

2016-06-28

Categories

Oracle

Trivadis PL/SQL & SQL Coding Guidelines Version 3.1

The latest version 3.1 of the Trivadis PL/SQL & SQL Coding Guidelines has 150 pages. More than 90 additional pages compared to version 2.0. Roger Troller did a tremendous job in updating and extending an already comprehensive document while making it simpler to read and easier to understand. In this post, I will […]