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Write different between CHAR and VARCHAR …

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Write different between CHAR and VARCHAR data type

Posted by Balaram Tamili 4 years, 1 month ago

CBSE > Class 12 > Informatics Practices

2 answers

Balaram Tamili 4 years, 1 month ago

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Gaurav Seth 4 years, 1 month ago

CHAR Data Type	VARCHAR Data Type
Its full name is CHARACTER	Its full name is VARIABLE CHARACTER
It stores values in fixed lengths and are padded with space characters to match the specified length	VARCHAR stores values in variable length along with 1-byte or 2-byte length prefix and are not padded with any characters
It can hold a maximum of 255 characters.	It can hold a maximum of 65,535 characters.
It uses static memory allocation. <pre> mysql>create table emp(name CHAR(20)); Query OK, 0 rows affected (0.25</pre>	It uses dynamic memory allocation. <pre> mysql>create table emp1(name VARCHAR(20)); Query OK, 0 rows affected (0.21</pre>

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CBSE > Class 12 > Informatics Practices