bb3e2b34b8
* Correct language about exclusivity of BETWEEN clause SQL BETWEEN clause is inclusive both in the SQL standard as well as in MySQL. * fix(guide): remove misleading sentence
52 lines
1.7 KiB
Markdown
52 lines
1.7 KiB
Markdown
---
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title: SQL Between Operator
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---
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## SQL Between Operator
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The BETWEEN Operator is useful because of the SQL Query Optimizer. Although BETWEEN is functionally the same as:
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x <= element <= y, the SQL Query Optimizer will recognize this command faster, and has optimized code for running it.
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This operator is used in a WHERE clause or in a GROUP BY HAVING clause.
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Rows are selected that have a value greater than or equal to the minimum value and less than or equal to the maximum value.
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It's important to keep in mind that the values entered in the command are **included** in the result.
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Here is the syntax for using the function in a WHERE Clause:
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```sql
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select field1, testField
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from table1
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where testField between min and max
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```
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Here is an example using the student table and the WHERE clause:
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```sql
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-- no WHERE clause
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select studentID, FullName, studentID
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from student;
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-- WHERE clause with between
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select studentID, FullName, studentID
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from student
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where studentID between 2 and 7;
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```
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Here is an example using the campaign funds table and the having clause.
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This will return rows where the sum of the donations for a candidate are between $3 Million and $18 Million based on the HAVING clause in the GROUP BY part of the statement. More on aggregation in that guide.
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```sql
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select Candidate, Office_Sought, Election_Year, format(sum(Total_$),2)
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from combined_party_data
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where Election_Year = 2016
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group by Candidate, Office_Sought, Election_Year
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having sum(Total_$) between 3000000 and 18000000
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order by sum(Total_$) desc;
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```
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