To find the currently logged in user name and his (or her)user identifier you can use the following command: SELECT USER,UID FROM ____________________;
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Q92: As already seen in this chapter,SELECT statements
Q93: Some tables contain hierarchies of data and
Q94: A query using a subquery is also
Q95: _ SQL functions convert values such as
Q96: The NULLS _ clause can be used
Q98: The DUAL table is owned by _
Q99: _ is a pseudocolumn generated for each
Q100: _ SQL functions operate on one row
Q101: A(n)_ query concatenates columns and rows of
Q102: The _ operator is used with the
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