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Italic
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Used for filenames, directory names, string-bound constants, and URLs. It is also used for emphasis, and for the first use of a technical term.
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Constant width
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Used for keywords, identifiers (such as tables and columns), data types, examples, and to show the contents of files, and the output of commands.
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Constant width italic
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Used in syntax descriptions to indicated user-defined items.
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Constant width bold
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Indicates user input within examples.
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UPPERCASE
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Used within syntax descriptions, uppercase usually indicates keywords.
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lowercase
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Used within syntax descriptions, lowercase usually indicates user-defined items, such as variables and identifiers.
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[ ]
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Used within syntax descriptions, square brackets enclose optional items, which are separated from one another by pipes (|).
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{ }
-
Used within syntax descriptions, curly brackets enclose a set of items from which you
must
choose one.
- ...
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Used within syntax descriptions, ellipses indicate repeating information. Used within examples, ellipses indicate that a section
of unimportant information was removed from the example output to improve readability and conserve space.
Note: The owl icon indicates a tip, suggestion, or general note. For example, we'll let you know that
PostgreSQL supports the use of all ISO standard time zone abbreviations in the section on time zones.
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Warning
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The turkey icon indicates a warning or caution. For example, we'll warn you ahead of time that using the
DELETE command without a WHERE clause can
delete all of your data from a table.
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