Character or String Data Types : String « Data Types « MySQL Tutorial
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MySQL Tutorial
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Data Types
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String
10.21.1.Character or String Data Types
The storage that is needed for each type is determined by the length of the string.
String Types
Type Name
Max Size
CHAR(X)
255 bytes
VARCHAR(X)
255 bytes
TINYTEXT
255 bytes
TINYBLOB
255 bytes
TEXT
65535 bytes
BLOB
65535 bytes
MEDIUMTEXT
1.6MB
MEDIUMBLOB
1.6MB
LONGTEXT
4.2GB
LONGBLOB
4.2GB
10.21.String
10.21.1.
Character or String Data Types
10.21.2.
Strings
10.21.3.
MySQL recognizes the following escape sequences.
10.21.4.
To include quote characters within a string
10.21.5.
A " inside a string quoted with " may be written as "".
10.21.6.
Precede the quote character by an escape character (\).
10.21.7.
A single quotation inside a string quoted with double quotation needs no special treatment.
10.21.8.
A double quotation inside a string quoted with single quotation needs no special treatment.
10.21.9.
When inserting binary data into a string column (such as a BLOB column), the following characters must be represented by escape sequences:
10.21.10.
Hexadecimal Values
10.21.11.
String comparisons normally are case-insensitive
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