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What are the different types of strings in database columns in MySQL?

What are the different types of strings in database columns in MySQL?

The string data types are CHAR , VARCHAR , BINARY , VARBINARY , BLOB , TEXT , ENUM , and SET . In some cases, MySQL may change a string column to a type different from that given in a CREATE TABLE or ALTER TABLE statement.

What are the non standard string types in MySQL?

MySQL allows a nonstandard syntax: FLOAT(M,D) or REAL(M,D) or DOUBLE PRECISION(M,D). Here values can be stored up to M digits in total where D represents the decimal point. For example, a column defined as FLOAT(8,5) will look like -999.99999.

What are string columns?

String column is the default, and the most basic column type of wpDataTables. You can put any content in a string column, and it will be rendered “as is”.

Which is not a data type in MySQL?

MySQL does not have the built-in BOOLEAN or BOOL data type. To represent boolean values, MySQL uses the smallest integer type which is TINYINT(1) . In other words, BOOLEAN and BOOL are synonyms for TINYINT(1).

What are the different types of string data in MySQL?

The string data types are CHAR , VARCHAR , BINARY , VARBINARY , BLOB , TEXT , ENUM, and SET . In some cases, MySQL may change a string column to a type different from that given in a CREATE TABLE or ALTER TABLE statement. See Section 13.1.20.7, “Silent Column Specification Changes” .

How are column data types created in MySQL?

Specifying the CHARACTER SET binary attribute for a character string data type causes the column to be created as the corresponding binary string data type: CHAR becomes BINARY , VARCHAR becomes VARBINARY, and TEXT becomes BLOB. For the ENUM and SET data types, this does not occur; they are created as declared.

How to define binary string columns in MySQL?

For definitions of binary string columns (BINARY, VARBINARY, and the BLOB types), MySQL interprets length specifications in byte units. Column definitions for character string data types CHAR, VARCHAR, the TEXT types, ENUM, SET, and any synonyms) can specify the column character set and collation: CHARACTER SET specifies the character set.

How is the char data type in MySQL?

The CHAR data type is fixed width data type i.e. if you specify a column as CHAR (50) then MySQL will store 50 bytes for this column values irrespective of how many characters you enter in that column. For example if you enter a string of just 10 chars in this column MySQL will occupy 50 bytes only and not 10 bytes.