The default character for specifying runtime variables in SELECT statements is
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Ampersand
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Ellipses
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Quotation marks
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Asterisk
The ampersand (&) is the default character for specifying runtime variables in SQL SELECT statements, followed by a variable name. Ellipses are not used, quotation marks are for strings, and asterisk is for all columns.
To answer this question, you need to understand the concept of runtime variables in SELECT statements.
The default character for specifying runtime variables in SELECT statements is the ampersand symbol (A).
Option A) Ampersand - This option is correct because the ampersand symbol is commonly used as the default character for specifying runtime variables in SELECT statements. This allows users to input values during query execution.
Option B) Ellipses - This option is incorrect because ellipses (...) are not used to specify runtime variables in SELECT statements.
Option C) Quotation marks - This option is incorrect because quotation marks are not used to specify runtime variables in SELECT statements.
Option D) Asterisk - This option is incorrect because the asterisk (*) is used in SELECT statements to select all columns, but it is not used to specify runtime variables.
The correct answer is A) Ampersand, as it is the default character for specifying runtime variables in SELECT statements.