Discuss SQL Certificate Oracle”s Oracle Database 11g: SQL Fundamentals exam is part of the Oracle Certified Oracle Database 11g Administrator track, combining training, experience, and testing to endorse candidates with a strong foundation and expertise in the industry’s most advanced database management system. This certification is to put you on the short list for winning […]
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SQL – Using Group functions Reporting Aggregate data using the Group functions SQL has numerous predefined aggregate functions that can be used to write queries to produce exactly this kind of information.The GROUP BY clause specifies how to group rows from a data table when aggregating information, while the HAVING clause filters out rows that […]
SQL – Restricting and Sorting Data The essential capabilities of SELECT statement are Selection, Projection and Joining. Displaying specific columns from a table is known as a project operation. We will now focus on displaying specific rows of output. This is known as a select operation. Specific rows can be selected by adding a WHERE […]