COALESCE(value,...) returns the first non-NULL value in the list, or NULL if there are no non-NULL values : BETWEEN AND : Comparison Functions Operators MySQL TUTORIALS

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COALESCE(value,...) returns the first non-NULL value in the list, or NULL if there are no non-NULL values


mysql>
mysql> SELECT COALESCE(NULL,1);
+------------------+
| COALESCE(NULL,1) |
+------------------+
|                1 |
+------------------+
1 row in set (0.00 sec)

mysql>
mysql>



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