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MySQL isn’t inserting binary data properly? Which datatype should be used?
For this, use BIT data type. Let us first create a table −
mysql> create table DemoTable(binaryValue BIT(5)); Query OK, 0 rows affected (0.83 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(15); Query OK, 1 row affected (0.15 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output. Now you can see the records aren’t visible −
+-------------+ | binaryValue | +-------------+ | | | | +-------------+ 2 rows in set (0.00 sec)
To display the above records (binary data), you need to use bin() −
mysql> select bin(binaryValue) from DemoTable;
This will produce the following output >
+------------------+ | bin(binaryValue) | +------------------+ | 1010 | | 1111 | +------------------+ 2 rows in set (0.00 sec)
Let us now see another example.
Following is the query to insert binary data, but the values aren’t visible when select is used −
mysql> insert into DemoTable VALUES (b'1010'),(b'1111'); Query OK, 2 rows affected (0.52 sec) Records: 2 Duplicates: 0 Warnings: 0 mysql> select *from DemoTable; +-------------+ | binaryValue | +-------------+ | | | | | | | | +-------------+ 4 rows in set (0.00 sec)
Let us check the table records once again and use bin() to display −
mysql> select bin(binaryValue) from DemoTable;
This will produce the following output −
+------------------+ | bin(binaryValue) | +------------------+ | 1010 | | 1111 | | 1010 | | 1111 | +------------------+ 4 rows in set (0.00 sec)
Updated on: 22-Aug-2019
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