#QUOTES DATABASE HOW TO#
#QUOTES DATABASE UPDATE#

This is used in many different contexts throughout PostgreSQL. Single quotes, on the other hand, are used to indicate that a token is a string. If you want to use double quotes, keep in mind that the case problem does not arise if you use double quotes with fully lower-cased identifiers. Use double quotes sparingly for better compatibility, especially when creating objects. From then on, you will be required to use double quotes to match that case every time you reference it. For example, suppose you use double quotes to preserve upper-case characters in the identifier when creating an object. However, keep in mind that this can lead to usability issues if not used carefully. For instance, if you need to create a column with a period in it, you would need to use double quotes so that PostgreSQL interprets it correctly. This difference allows you to create identifiers that would otherwise not be legal within PostgreSQL. This leads to PostgreSQL treating 'CUSTOMER' and 'customer' as entirely different objects. However, quoted identifiers are case sensitive. This means that PostgreSQL will recognize customer, Customer, and CUSTOMER as the same object. Unquoted identifiers (like the second version) are case insensitive. While the two formats used above both work correctly for a customer table, there are important differences. SELECT * FROM customer Quoting identifiers and the problem of case sensitivity

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#QUOTES DATABASE HOW TO#

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#QUOTES DATABASE UPDATE#

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Quotes database