SQL Topics Data types , Types of SQL Commands ( DDL , DML , DRL , DCL , TCL ) , Importance of NULL , Importance of && (double am-present ) , Operators in SQL , Special operators, Number functions, Character functions , date functions , Conversion Functions ( to_char, to_date , to_number ), aggregate functions , order by , group by, having clause , constraints , sub-queries (Single-row , multi-row , multi-column , co-related, scalar sub-queries) , pseudo-columns , Joins , Views , Importance of alias, listagg , decode, trunc date function , Indexes , NVL function , coalesce ,null - if ,case statement , extract. Basic SQL Questions 1. What is SQL? 2. What is a database ? 3. What are the different types of SQL commands? 4. What is the difference between SQL and MySQL? 5. Explain the structure of a SQL query. 6. What is a primary key? 7. What is a foreign key? 8. What are the different data types in SQL? 9. What is a SQL jo...
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