June 2002
Intermediate to advanced
800 pages
16h 3m
English
Content preview from PHP and PostgreSQL: Advanced Web ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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7.1. Data Types
Every relational database is built of tables, which consist of various columns. Each column is designed to contain a special, predefined piece of data. Depending on the kind of data you want to store, an appropriate data type must be chosen. A column based on a certain data type can only store information fitting the demands of the data type of the column. For example, a column that has been defined as integer value must not be used to store text.
PostgreSQL provides a powerful set of data types, which can be retrieved by using the \dT command in psql:
phpbook=# \dT List of data types Name | Description -----------------------------+------------------------------------------------- ------------------ abstime | absolute, limited-range ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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