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Perform NAND/NOR operations in MySQL
Let us first see how we can perform NAND/NOR operations in MySQL. The concept is as follows −
NAND= NOT( yourColumnName1 AND yourColumnName2) NOR=NOT( yourColumnName1 OR yourColumnName2)
Let us first create a table −
mysql> create table DemoTable ( Value1 boolean , Value2 boolean ); Query OK, 0 rows affected (0.72 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(true,true); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(false,false); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(false,true); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(true,false); Query OK, 1 row affected (0.12 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+--------+--------+ | Value1 | Value2 | +--------+--------+ | 1 | 1 | | 0 | 0 | | 0 | 1 | | 1 | 0 | +--------+--------+ 4 rows in set (0.00 sec)
Following is the query to perform NAND/NOR operations −
mysql> select Value1,Value2, NOT(Value1 AND Value2) AS NAND_Result,NOT(Value1 OR Value2) AS NOR_Result from DemoTable;
This will produce the following output −
+--------+--------+-------------+------------+ | Value1 | Value2 | NAND_Result | NOR_Result | +--------+--------+-------------+------------+ | 1 | 1 | 0 | 0 | | 0 | 0 | 1 | 1 | | 0 | 1 | 1 | 0 | | 1 | 0 | 1 | 0 | +--------+--------+-------------+------------+ 4 rows in set (0.00 sec)
Updated on: 09-Oct-2019
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