You can include numeric or string literals.
Be sure to enclose string literals within single quotation marks. For example:
String literals are case sensitive and can contain any character except a single quotation mark. For example, the following string is not allowed:
To return a string containing a single quote, use the CHR function:
'Joan' || CHR(39) || 's car'
Do not use single quotation marks with numeric literals. Just enter the number you want to include. For example: