Introduction to SQL Scalar aggregate are multiple values returned from an SQL query that includes an aggregate function. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL NULL is the same as 0 for integer not a value the same as blank for character the same as 0 for integer and blank for character the same as 0 for integer not a value the same as blank for character the same as 0 for integer and blank for character ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL statementSELECT ROUND(45.926, -1) FROM DUAL; prints 50 is illegal prints 045.926 prints garbage prints 50 is illegal prints 045.926 prints garbage ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes can usually be created for both primary and secondary keys. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following is illegal? SELECT SYSDATE - (SYSDATE - 2) FROM DUAL; None of these SELECT SYSDATE - (SYSDATE + 2) FROM DUAL; SELECT SYSDATE - SYSDATE FROM DUAL; SELECT SYSDATE - (SYSDATE - 2) FROM DUAL; None of these SELECT SYSDATE - (SYSDATE + 2) FROM DUAL; SELECT SYSDATE - SYSDATE FROM DUAL; ANSWER DOWNLOAD EXAMIANS APP
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 SELECT statement. An exact match is necessary in a CREATE 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 SELECT statement. An exact match is necessary in a CREATE statement. ANSWER DOWNLOAD EXAMIANS APP
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