TutorialIntroduction to SQL DescriptionThis tutorial provides an introduction to the Structured Query Language (SQL), learn how to create tables with primary keys, columns, constraints, indexes, and foreign keys. Tagscreate table, create, select, insert, update, delete, drop, drop table, recycle bin, purge AreaSQL General ContributorMike Hichwa (Oracle) CreatedMonday Modules 13
Microsoft has enhanced its Microsoft 365 Copilot with agentic abilities to directly act on live documents, while Oracle introduced an AI Database Agent for Google Cloud’s Gemini Enterprise, enabling ...
Script Name Exception Propagation: Innermost, Outermost, In Between? Description This script is used in the May 2019 PL/SQL Office Hours session to explore the different approaches recommended by Tom Kyte and Steven Feuerstein Area PL/SQL General Contributor Steven Feuerstein Created Monday
Script Name JSON 4000 chars Description Parse strings longer then 4000 chars Area SQL General / JSON Contributor Lord Created Friday
Script Name remainder_issue_followup Description Shows difference when round () and trunc () are used on the m/n results. Area SQL General / Functions Contributor David Fitzjarrell Created Monday
Script Name Criando e inserindo dados Description Método para criação e inserção de dados em uma tabela. Area SQL General Contributor ccheitor Created Thursday
In SQL, anything you evaluate / compute with NULL results into UNKNOWN This is why SELECT * FROM MyTable WHERE MyColumn != NULL or SELECT * FROM MyTable WHERE MyColumn <> NULL gives you 0 results.
sql - Not equal <> != operator on NULL - Stack Overflow
I have seen SQL that uses both != and <> for not equal. What is the preferred syntax and why? I like !=, because <> reminds me of Visual Basic.