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											2019-01-19 00:01:36 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								title: SQL AND Operator
							 
						 
					
						
							
								
									
										
										
										
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								## SQL AND operator
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								AND is used in a WHERE clause or a GROUP BY HAVING clause to limit the rows returned from the executed statement. Use AND when it's required to have more than one condition met.
							 
						 
					
						
							
								
									
										
										
										
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								We'll use the student table to present examples.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								Here's the student table without a WHERE clause:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```sql
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								select * from student;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
									
										
										
										
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								Now the WHERE clause is added to display only programming students:
							 
						 
					
						
							
								
									
										
										
										
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								```sql
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								select * from student 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								where programOfStudy = 'Programming';
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
									
										
										
										
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								Now the WHERE clause is updated with AND to show results for programming students that also have a SAT score greater than 800:
							 
						 
					
						
							
								
									
										
										
										
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								```sql
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								select * from student 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								where programOfStudy = 'Programming' 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								and sat_score > 800;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								This is a more complex example from the campaign contributions table. This example has a GROUP BY clause with a HAVING clause using an AND to restrict the returned records to candidates from 2016 with contributions between $3 Million and $18 Million in total.
							 
						 
					
						
							
								
									
										
										
										
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								```sql
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								select Candidate, Office_Sought, Election_Year, FORMAT(sum(Total_$),2) from combined_party_data
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								where Office_Sought = 'PRESIDENT / VICE PRESIDENT'
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								group by Candidate, Office_Sought, Election_Year
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								 having Election_Year = 2016 and sum(Total_$) between 3000000 and 18000000
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								order by sum(Total_$) desc;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
									
										
										
										
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