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Structure Query Language (SQL) Tutorials

1. Introduction to Structure Query Language (SQL)
2. SQL Comments
3. SQL Data Types
4. SQL Arithmetic Operators
5. SQL Constraints
6. SQL Transactions
7. SQL Views
8. SQL USING Clause
9. SQL WITH Clause
10. SQL WITH TIES Clause
11. Transactions (Properties and Control Commands) in SQL
12. What are the clause, Keywords and statement in SQL?
13. SQL | DDL, DML, TCL, and DCL Commands
14. SQL - CREATE Command (to create Database and Table)
15. SQL - SELECT Command (to retrieve data from table/view)
16. SQL - DELETE Statement (to delete records/table)
17. Difference between Delete and Truncate Command in SQL
18. Difference between Drop and Truncate Command in SQL
19. SQL - INSERT INTO Statement (to insert/add record into table)
20. SQL - UPDATE Statement (to update record in table)
21. SQL - ALTER TABLE statement (to modify table definition)
22. SQL - WHERE Clause (to filter data)
23. SQL - VIEW AND DUAL
24. SQL - GROUP BY and ORDER BY
25. SQL - HAVING Clause
26. SQL INDEX - To speedup data retrieval operations
27. Transactions (Properties and Control Commands) in SQL
28. SQL - Explain VIEW with Examples
29. Wildcard Operators in SQL
30. Wildcards Examples in SQL
31. Implement CREATE VIEW in SQL
32. How to use UNION in SQL?
33. Temporary tables in SQL
34. How can we use Sub Queries in SQL?
35. Clone data between tables in SQL
36. How to handle duplicate data in SQL?
37. Alterations on table in SQL
38. Using TRUNCATE TABLE in SQL
39. Sort resultSet using ORDER BY clause in SQL
40. SQL query to find duplicate records
41. SQL query to join two tables
42. SQL query to delete duplicate records
43. SQL query to change column name
44. SQL query to add values in column
45. SQL query to add primary key
46. SQL Query to alter column size
47. SQL Query to auto increment primary key
48. SQL Query to avoid duplicate records
49. SQL Query to access first and last N records from a table
50. SQL Clauses
51. Transaction Control Language (TCL) commands in SQL
52. SQL Alias
53. Difference between WHERE and HAVING clauses in SQL
54. SQL Joins Tutorial with Queries and Examples
55. How to use AND/ OR Operator in SQL?
56. Use of Injection in SQL
57. SELECT TOP with Example in SQL
58. IN Operator with Example in SQL
59. How to use Foreign Key in SQL?
60. Use of CHECK Constraint in SQL
61. Use of DEFAULT Constraint in SQL

SQL Functions

1. NULL VALUES and NULL FUNCTIONS in SQL
2. Use of LEN(), ROUND() functions in SQL
3. Use of DATES and its different built-in functions NOW(), FORMAT() in SQL
4. Use of UCASE(), LCASE() and MID() functions in SQL

SQL Queries

• SQL query to change column datatype
• SQL Query to compare dates
• Find record of nth highest salary employee in SQL
• SQL Query to find the Nth minimum Salary
• SQL Query to fetch (print) Even and Odd records from a table
• SQL Query to merge N columns as single column from a table
• SQL query to find fields with NULL values

SQL Multiple-Choice Questions (MCQs)

PL/SQL Multiple-Choice Questions (MCQs)