Which of the following symbols is used to represent a single character during a pattern search?
The percent sign (%) is used in a search pattern to indicate "exactly one character in this position".
Which of the following operators can be used to retrieve rows containing NULL values in a specific column select one?
To find rows containing a NULL value in a specified column, you must use the search condition of = NULL. A column alias that has been defined in the SELECT clause of a SELECT statement cannot be referenced in an ORDER BY clause. The "equal to" comparison operator is used to search for NULL values.
Which of the following set operators will display the results of the combined SQL statements without suppressing duplicate rows?
Which of the following set operators will display the results of the combined SQL statements without suppressing duplicate rows? The INTERSECT set operator only displays the rows returned by both queries. The UNION set operator will not suppress rows that are returned by both queries.
When two conditions are joined by the AND logical operator both of the conditions must be evaluated as true to be included in the query results?
When two conditions are joined by the AND logical operator, both of the conditions must be evaluated as TRUE to be included in the query results. In a WHERE clause, logical operators are evaluated before comparison operators.
Which of the following operator is used to find a character string that matches a given string pattern?
SQL Like The SQL Like is a logical operator that is used to determine whether a specific character string matches a specified pattern. It is commonly used in a Where clause to search for a specified pattern in a column.
What is like %% in SQL?
The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. There are two wildcards often used in conjunction with the LIKE operator: The percent sign (%) represents zero, one, or multiple characters. The underscore sign (_) represents one, single character.
Which operator given below is used to return rows from the first query but not from the second query?
MINUS Returns only the rows in the first result set that do not appear in the second result set, sorting them and removing duplicates. 5. What is true about SET operators? They combine the results of 10 component queries into two result sets.
Which of the following logical operators is used in the WHERE clause of the SELECT statement?
Answer: The SELECT statement selects a single column and uses the IN comparison operator in the WHERE clause.
Which of the following operator combines two or more SELECT statements?
Set operators are used to combine the results of two (or more) SELECT statements.
Which of the following group functions can be used with any numeric character or date type columns?
Group functions return one result per group of rows processed. clause, the GROUP BY clause must contain the nonaggregated columns. The MAX function can only be used with numeric or date columns. Columns used to group data in the GROUP BY clause must also be listed in the SELECT clause.
Which logical condition operator used in a WHERE clause returns true only when both of the conditions are true?
SQL Logical AND operator Logical AND compares two Booleans as expression and returns TRUE when both of the conditions are TRUE and returns FALSE when either is FALSE; otherwise, returns UNKNOWN (an operator that has one or two NULL expressions returns UNKNOWN).
Which of the following operators performs logical operations such as checking the condition of two Boolean values?
Common logical operators include AND, OR, and NOT.
Which of the following operator can be used for pattern matching *?
LIKE operator LIKE operator is used for pattern matching, and it can be used as -. % – It matches zero or more characters.
Which operator is used for string character matching?
The like operator The like operator lets you compare two strings to see whether they resemble each other in specific ways. To use this operator, specify a pattern (a string of characters with special formatting characters) that specifies what the compared string must look like.
What is in operator in SQL?
The SQL IN Operator The IN operator allows you to specify multiple values in a WHERE clause. The IN operator is a shorthand for multiple OR conditions.
Which operator is used in query for pattern matching?
The LIKE operator is used in a WHERE clause to search for a specified pattern in a column.
Which of the operator given below is used to display rows based on a range of values?
The BETWEEN operator Answer: C. The BETWEEN operator is used to retrieve rows based on range of values.
Which set operator is used to return all of the rows resulting from the first query that also appear in the results of the second query?
The EXCEPT operator returns the rows that appear in the first set but not the second, returning distinct rows.
Which of the following operators is used in WHERE clause?
The SQL WHERE clause is used to restrict the number of rows affected by a SELECT, UPDATE or DELETE query. The WHERE condition in SQL can be used in conjunction with logical operators such as AND and OR, comparison operators such as ,= etc.
What is the difference between UNION and UNION all operators?
The only difference between Union and Union All is that Union extracts the rows that are being specified in the query while Union All extracts all the rows including the duplicates (repeated values) from both the queries.
Which of the following functions can be used on both numeric as well as non-numeric data?
COUNT Function It works on both numeric and non-numeric data types.
Which of the following group functions can be used with date values?
MAX function The MAX function can be used only with date values. The AVG function can be used only with numeric data.
Which of the following logical operator is used when both condition should be true to return a true value?
&& && is the logical and operator. It returns TRUE if both of the arguments evaluate to TRUE.
Which operator is used if the statement evaluates true only if both the expressions are true?
The logical OR operator ( || ) returns the boolean value true if either or both operands is true and returns false otherwise.
Which of the following operators are used in conditional statement?
There are three conditional operators: && the logical AND operator. || the logical OR operator. ?: the ternary operator.
Which of the following operator is used for pattern matching in SQL * Between operator LIKE operator exists operator as operator?
The correct answer to the question “Which operator performs pattern matching in SQL” is option (b). LIKE operator. All the other options are incorrect and don't perform pattern matching in SQL.
Which of the following is used for pattern matching in SQL?
Generally, the REGEXP_LIKE(column_name, 'regex') function is used for pattern matching in SQL. SQL also supports some operators that work similar to this function, these are: 'REGEXP' and 'RLIKE' operator.
Which operator is used in a pattern to represent one character only?
underscore (_) An underscore (_) in the pattern matches exactly one character (as opposed to one byte in a multibyte character set) in the value.
Which is a logical operator?
Overview. A logical operator is a symbol or word used to connect two or more expressions such that the value of the compound expression produced depends only on that of the original expressions and on the meaning of the operator. Common logical operators include AND, OR, and NOT.
What are the operators?
In mathematics and sometimes in computer programming, an operator is a character that represents an action, as for example x is an arithmetic operator that represents multiplication. In computer programs, one of the most familiar sets of operators, the Boolean operators, is used to work with true/false values.