Like any other programming language, there are mainly two types of comments.
Single-Line Comments – The single line comments start with ‘–‘. So, any text mentioned after — till the end of the line will be ignored by the compiler.
Example:
| 
 | --Select all:
SELECT * FROM Students; | 
Multi-Line Comments – The Multi-line comments start with /* and end with */. So, any text mentioned between /* and */ will be ignored by the compiler.
Example:
| 
 | /*Select all the columns
of all the records
in the Students table:*/
SELECT * FROM Students; |