SQL COURSE IN JAIPUR
FREE DEMO CLASSES
Creating tables and columns
Protecting data integrity with constraints
- Guaranteeing uniqueness with primary
key constraints - Enforcing integrity with foreign key
constraints - Imposing business rules with check
constraints
Improving performance with indexes
- Expediting data retrieval with indexes
- Recommending guidelines for index creation
Manipulating Data
Modifying table contents
- Adding table rows with INSERT
- Changing row content with UPDATE
- Removing rows with DELETE
Applying transactions
- Controlling transactions with
- COMMIT and ROLLBACK
Working with the SELECT Statement
Writing Single Table queries
- Retrieving data with SELECT
- Specifying column expressions
- Sorting the result with ORDER BY
Restricting rows with the WHERE filter
- Testing for equality or inequality
- Applying wildcard characters
- Avoiding NULL value pitfalls
Querying Multiple Tables
Combining results with set operators
- Stacking results with UNION
- Identifying matching rows with
INTERSECT - Utilizing EXCEPT to find nonmatching rows
Employing Functions in Data Retrieval
Processing data with row functions
- Conditional formatting with the CASE expression
- Utilizing the CASE expression to simulate IF tests
- Dealing with NULL values
Performing analysis with aggregate functions
- Summarizing data using SUM, AVG and
COUNT - Finding the highest/lowest values with
MAX and MIN - Defining the summary level with GROUP
- Applying filter conditions with HAVING
Constructing Nested Queries
Including subqueries in expressions
- Placing subqueries in the column list
- Creating complex expressions containing subqueries
- Handling subqueries that return no rows
Developing In-Line and Stored Views
Breaking down complex problems
- Subqueries in the FROM clause
Creating views in a database
