
Learn how the limit clause narrows a select result to a subset of rows, use offset to skip initial rows, and see how limit zero returns the full result set.
Discover how the fetch clause compares to the limit clause in SQL, including fetch first, offset, and practical examples with select, from, and order by.
Explore null and not null in sql by building a contacts table, enforcing not null on names, and querying with is null and is not null to handle missing data.
Explore how data is stored in computers, from characters represented as numbers to decimal and hexadecimal forms. Learn how storage choices influence database access and optimization in sql databases.
Create a blank database in Microsoft Access from the home screen, locate the file on the C drive, and note the A.S.C. extension and the default ID table.
Open an existing MS Access database by using the start menu, open other files, or browse from OneDrive or computer; view tables and objects, with security prompts.
Explore numeric and text data types in MS Access, detailing number and currency fields, decimal points, and when to use short, long, or rich text, including zip codes.
Discover how the primary key ensures unique identity and data integrity in a table, enforced by not null, no duplicates, and indexing to support joins and unions.
Learn how to sort a table in MS Access using ascending and descending order, including sorting by last name and age to reorganize records.
Learn to use the update statement to modify specific rows with set and where clauses, updating fields such as first name, last name, and salary via a sequence number.
Explore how the between operator in SQL works with the where clause to filter rows by a salary range, selecting values between 95000 and 97000 inclusive.
Learn how to use SQL quickly and effectively with this course with two different database management system. First we will start with PostgreSQL and then we will move to Microsoft Access.
You'll learn how to read and write complex queries to a database (PostgreSQL & Microsoft Access) using one of the most in demand skills - SQL. These skills are also applicable to any other major SQL database, such as MySQL, Microsoft SQL Server, Amazon Redshift, Oracle, and much more.
Learning SQL is one of the fastest ways to improve your career prospects as it is one of the most in demand tech skills! In this course you'll learn quickly and receive challenges and tests along the way to improve your understanding!
Who this course is for:
Anyone interested in learning more about SQL, PostgreSQL, or basic data analysis!
Anyone interested in learning Microsoft Access!