In the db2 interview questions, on this site, there are these characters, ?_? i've googled around and am not finding what they resolve to? sometimes they would be appear to be & and other times * and they always appear at the end of a question, just after the question mark, ie, '?'
bob
characters in the db2 interview question guide
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its not much, here is a sample:
9) How do you concatenate the FIRSTNAME and LASTNAME from EMP table to give a complete name?
SELECT FIRSTNAME || � � || LASTNAME FROM EMP;
15) What is 'LIKE' used for in WHERE clause? What are the wildcard characters? �
LIKE is used for partial string matches. �%� ( for a string of any character ) and �_� (for any single character ) are the two wild card characters.
those question marks translate out to ?_? in a text editor, i was trying to figure out what they were, no biggy
9) How do you concatenate the FIRSTNAME and LASTNAME from EMP table to give a complete name?
SELECT FIRSTNAME || � � || LASTNAME FROM EMP;
15) What is 'LIKE' used for in WHERE clause? What are the wildcard characters? �
LIKE is used for partial string matches. �%� ( for a string of any character ) and �_� (for any single character ) are the two wild card characters.
those question marks translate out to ?_? in a text editor, i was trying to figure out what they were, no biggy
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