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Symbols and brackets used in code syntax
For those users new to SQL: in the notation used in this section (and generally in all Firebird and InterBase® literature), the following symbols, punctuation and brackets have the following meaning:
| () | round brackets | Elements of the syntax. |
| , | comma | Elements of the syntax. |
| {} | curly braces/brackets | Not part of the syntax; indicate mandatory phrases. |
| [] | square brackets | Not part of the syntax; indicate optional phrases. |
| | | pipe symbol | Not part of the syntax; indicates mutually exclusive options. |