Introduction to SQL COUNT(field_name) tallies only those rows that contain a value; it ignores all null values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Indexes may be created or dropped at any time. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following must be enclosed in double quotes? Strings Dates Column Alias All of these Strings Dates Column Alias All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In an SQL SELECT statement querying a single table, according to the SQL-92 standard the asterisk (*) means that: all records meeting the full criteria are to be returned. all columns of the table are to be returned. all records with even partial criteria met are to be returned. None of these all records meeting the full criteria are to be returned. all columns of the table are to be returned. all records with even partial criteria met are to be returned. None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters." True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL query and modification commands make up a(n) ________ . HTML XML DDL DML HTML XML DDL DML ANSWER DOWNLOAD EXAMIANS APP
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