Data Types in SQL - Character

CHARACTER or, synonymously, CHAR, for character strings. When this type is to be the declared type of something (e.g., a column), the permissible values are further constrained by a maximum length specification given in parentheses and optionally by the key word VARYING, indicating that values shorter than the maximum, including the empty string '' , are also permissible. Examples: CHAR(5) for strings of five characters only, CHARACTER VARYING (100), which can be abbreviated to VARCHAR(100), for strings of up to one hundred characters. The last two are alternative spellings for the same declared type.

The type CHARACTER LARGE OBJECT, or CLOB, allows for inclusion of strings that are longer than the longest supported by the other CHARACTER types. Note that in the terminology of the theory book CHARACTER is a kind of type generator. The key word does not of itself denote a type, but only does so when qualified by a length specification. A similar remark applies to some of the other type names used in SQL.

Posted Date: 1/18/2013 1:55:48 AM | Location : United States

Ask an Expert

Related Discussions:- Data types in sql - character, Assignment Help, Ask Question on Data types in sql - character, Get Answer, Expert's Help, Data types in sql - character Discussions

Write discussion on Data types in sql - character
Your posts are moderated

Write your message here..

Related Questions

Need to change mysql query to pdo, Need to change mysql query to PDO Pro... Need to change mysql query to PDO Project Description: I want someone to convert me 1 .php file that includes some sql/mysql stuff to PDO is a very small file. Skills requ

Interesting properties of cross join - sql, Interesting properties of CROSS... Interesting properties of CROSS JOIN - SQL Compare these with the "interesting properties of JOIN", CROSS JOIN is associative but not commutative. Unlike JOIN and NATURAL JOI

Create a procedure to tax calculation task, Complete the following steps to... Complete the following steps to create a procedure to calculate the tax on an order. The BB_TAX table contains the states that require taxes to be submitted for Internet sales. If

Exceptions - syntax, Exceptions An exception is the runtime error or wa... Exceptions An exception is the runtime error or warning condition that can be predefined or user-defined. The Predefined exceptions are raised implicitly through runtime system

Begin parameter description in pl sql, BEGIN Parameter Description in pl sq... BEGIN Parameter Description in pl sql: BEGIN: This keyword signals the beginning of the executable section of a PL/SQL block, that contains executable statements. The execut

Count operator in sql, Count Operator in SQL Example: Counting the stu... Count Operator in SQL Example: Counting the students who have scored more than 50 in some exam (SELECT COUNT (*) FROM (SELECT DISTINCT StudentId FROM EXAM_MARK WHE

Between and not between operator in sql, BETWEEN and NOT BETWEEN Operator i... BETWEEN and NOT BETWEEN Operator in SQL Example: Restricting exam marks to between 0 and 100 CREATE ASSERTION Marks_between_0_and_100 CHECK (NOT EXISTS (SELECT * FROM

Using %type-declarations in sql, Using %TYPE The %TYPE attribute gives th... Using %TYPE The %TYPE attribute gives the datatype of a variable or the database column. In the example below, the %TYPE gives the datatype of a variable: credit REAL(7,2); debi

Pl/sql assignment, 1. a. Write a trigger that fires when a part's price... 1. a. Write a trigger that fires when a part's price is updated. The trigger will write a record into a table called PriceUpdates. The record should contain the information of

Max and min operator in sql, MAX and MIN operator in SQL Example: ... MAX and MIN operator in SQL Example: (SELECT MAX (Mark) FROM EXAM_MARK WHERE StudentId = 'S1') (SELECT MIN (Mark) FROM EXAM_MARK WHERE StudentId = 'S1') Example