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Which character is illegal in naming an unquoted identifier in SQL?(a) .(b) _(c) $(d) 2The question was posed to me in an online interview.My question comes from Using Multiple-Statement Execution topic in chapter MySQL Programs Using C of MySQL

Answer» CORRECT option is (a) .

The explanation: An IDENTIFIER is used to REFER to a database or its ELEMENTS. These elements can be entire tables or attributes. The names of these identifiers follow some set of rules, so they have a set of LEGAL characters.


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