Introduction to SQL The wildcard in a WHERE clause is useful when? An exact match is not possible in a SELECT statement. An exact match is not possible in a CREATE statement. An exact match is necessary in a CREATE statement. An exact match is necessary in a SELECT statement. An exact match is not possible in a SELECT statement. An exact match is not possible in a CREATE statement. An exact match is necessary in a CREATE statement. An exact match is necessary in a SELECT statement. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs Nothing Hi FLASE TRUE Nothing Hi FLASE TRUE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the SQL statements is correct? SELECT Username AND Password FROM Users SELECT Username, Password FROM Users SELECT Username, Password WHERE Username = 'user1' None of these SELECT Username AND Password FROM Users SELECT Username, Password FROM Users SELECT Username, Password WHERE Username = 'user1' None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL DISTINCT and its counterpart, ALL, can be used more than once in a SELECT statement. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The HAVING clause acts like a WHERE clause, but it identifies groups that meet a criterion, rather than rows. True False True False ANSWER DOWNLOAD EXAMIANS APP
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