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The ASCII_CODE Function
Syntax for the ASCII_CODE function:
source-string is a character or binary string expression.
Rules:
- A single INTEGER value is returned, representing an ASCII code.
- If the source-string contains more than one character, the ASCII code of the left-most octet is returned.
- If the length of source-string is zero, then the result of the function is NULL.
- If the value of source-string is NULL, then the result of the function is NULL.
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