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In MySQL, how IN() comparison function works?
Basically, IN() comparison function checks whether a value is within a set of values or not. If the value is within a set of values then it returns 1 otherwise 0. Its syntax can be as follows;
Expression IN (val1, val2,…,valN)
Here,
- The expression is the value that is to be searched within the set of N values within IN list.
- Val1, val2,…, valN is the set of N values, forms the IN list, from which the search happens.
Example
mysql> Select 100 IN (50,100,200,400,2000);
+------------------------------+
| 100 IN (50,100,200,400,2000) |
+------------------------------+
| 1 |
+------------------------------+
1 row in set (0.00 sec)
mysql> Select 1000 IN (50,100,200,400,2000);
+-------------------------------+
| 1000 IN (50,100,200,400,2000) |
+-------------------------------+
| 0 |
+-------------------------------+
1 row in set (0.00 sec)
mysql> Select 'ABC' IN ('ABCD','ABCDE','ABC');
+---------------------------------+
| 'ABC' IN ('ABCD','ABCDE','ABC') |
+---------------------------------+
| 1 |
+---------------------------------+
1 row in set (0.01 sec)
mysql> Select 'ABC' IN ('ABCD','ABCDE','ABCDEF');
+------------------------------------+
| 'ABC' IN ('ABCD','ABCDE','ABCDEF') |
+------------------------------------+
| 0 |
+------------------------------------+
1 row in set (0.00 sec)
Updated on: 22-Jun-2020
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