June 2023
Intermediate to advanced
480 pages
12h 39m
English
Content preview from Oracle PL/SQL by Example, 6th Edition
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18
Bulk SQL
In Chapter 1, “PL/SQL Concepts,” you learned that the PL/SQL engine sends SQL statements to the SQL engine, which then returns results back to the PL/SQL engine. The communication between the PL/SQL and SQL engines is also known as a context switch. A certain performance overhead is associated with these context switches. However, the PL/SQL language has a number of features that can minimize the performance overhead; they are collectively known as bulk SQL. Generally, if a SQL statement affects four or more rows, bulk SQL may improve performance significantly. Bulk SQL supports batch processing of SQL statements ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.