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Documentation conventions
This section lists the typographic and graphical conventions used in this
documentation.
Syntax conventions
The following conventions are used in the SQL syntax descriptions:
♦
Keywords All SQL keywords are shown in UPPER CASE. However,
SQL keywords are case insensitive, so you can enter keywords in any
case you wish; SELECT is the same as Select is the same as select.
♦
Placeholders Items that must be replaced with appropriate identifiers
or expressions are shown in italics.
♦
Continuation Lines beginning with ... are a continuation of the
statements from the previous line.
♦
Repeating items Lists of repeating items appear with an element of
the list followed by an ellipsis (three dots). One or more list elements are
allowed. If you specify more than one, they must be separated by
commas.
♦
Optional portions Optional portions of a statement are enclosed by
square brackets. For example,
RELEASE SAVEPOINT [
savepoint-name
]
indicates that the savepoint-name is optional. Do not type the square
brackets.
♦
Options When none or only one of a list of items must be chosen, the
items are separated by vertical bars and the list enclosed in square
brackets. For example,
[ ASC | DESC ]
indicates that you can choose one of ASC, DESC, or neither. The square
brackets should not be typed.
♦
Alternatives When precisely one of the options must be chosen, the
alternatives are enclosed in curly braces. For example,
QUOTES { ON | OFF }
indicates that exactly one of ON or OFF must be provided. Do not type
the braces.
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