Reporting Functions & Operators
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1 Functions Reporting Functions & Operators List of Built-in Field Functions Function Average Count Count Distinct Maximum Minimum Sum Sum Distinct Return the average of all values within the field. Return the quantity of all values within the field. Return the count unique number of all values within the field. Return the maximum the field. Return the minimum the field. Return the sum of all values within the field. Return the sum unique number of all values within the field. List of Built-in Calculated Field Functions Function AVG AVG() Numeric, Money average of the values in a group. Null values are ignored. Numeric, Money COUNT COUNT() number of items in a group. Numeric. MAX MAX() maximum
2 Function value in a group. MIN MIN() minimum value in a group. SUM SUM() Numeric, Money. sum of all the values in a group. Null values are ignored. LEN LEN() Text. number of characters of the given text, excluding trailing blanks. Numeric. ROUND ROUND() Numeric, Money. rounded to the specified length or precision. CONCAT CONCAT(, [,...]) Text. concatenation of all the parameters in that exact order. Text. CONCAT('ab','cd',[SHIP COUNTRY]) GETDATE GETDATE() N/A. current system date and time. Datetime.
3 Function DATEADD DATEADD(datepart, number, date) datepart: the part of the date. (See table List of Dateparts and Abbreviations) number: the value used to increment datepart. Returns a new datetime value based on adding an interval to the specified date. Datetime. DATEADD(day,3,[DueDate ]) date: an that returns a datetime value. DATEDIFF DATEDIFF(datepart, startdate, enddate) datepart: the part of the date. (See table List of Dateparts and Abbreviations) startdate, enddate: s that return datetime values. number of date and time boundaries crossed between two specified dates. Numeric. DATEDIFF(day,[OrderDat e],[shipdate]) DATEPART DATEPART(datepart, date) datepart: the part of the date. (See table List of Dateparts and Abbreviations) date: an that returns a datetime value. Returns a number representing the specified datepart of the specified date. Numeric. CONVERT CONVERT(data_type, ) data_type: any data type. Explicitly converts an of one data type to another, similar to CAST..AS. data_type.
4 Function : any CAST..AS CAST( AS data_type) data_type: any data type. : any Explicitly converts an of one data type to another, similar to CONVERT. data_type. ISNULL ISNULL(check_, replacement_) check_ and replac ement_: any data type. check_expressi on if it is not NULL; otherwise, returns the replacement_e xpression. BETWEEN..AND test_ [NOT] BETWEEN begin_ AND end_ Returns TRUE if the test_expressio n is greater than or equal to the begin_expressi on and less than or equal to the end_expressio n, otherwise returns FALSE. AND boolean_ AND boolean_ Returns TRUE when both s are TRUE, otherwise returns FALSE.
5 Function OR boolean_ AND boolean_ Returns TRUE when either is TRUE, otherwise returns FALSE. DISTINCT DISTINCT () or DISTINCT Returns unique values. IFF IFF (boolean_, true_[, false_]) boolean_: true_, false_expre ssion: any data type except Image true_expressio n when boolean_expre ssion is TRUE, otherwise returns the false_expressi on. The highest precedence data type from data types of true_expressi on and false_expressi on. IF..THEN..ELSE..END IF (boolean_) THEN (true_) [ELSE (false_)] END boolean_: true_, false_expre ssion: any data type except Image true_expressio n when boolean_expre ssion is TRUE, otherwise returns the false_expressi on. The highest precedence data type from data types of true_expressi on and false_expressi on. CASE..WHEN..THEN..ELS E..END The highest precedence
6 Function CASE (input_) WHEN (when_) THEN (result_) [ n] [ELSE (else_result_)] END result_expressi on matching the first when_expressi on with the value equal to input_expressi on, otherwise return the else_result_ex pression. data type from data types of all result_exp ression s and else_result_ex pression. RUNNINGSUM RUNNINGSUM() Numeric, Money. sum of all the values of from the first row up to the current row. RUNNINGAVG RUNNINGAVG() Numeric, Money. average of all the values of from the first row up to the current row. RUNNINGCOUNT RUNNINGCOUNT() number of unique values of from the first row up to the current row. Numeric. List of Date parts and Abbreviations Datepart year Abbreviations yy, yyyy
7 quarter month dayofyear day week weekday hour minute second millisecond qq, q mm, m dy, y dd, d ww, wk dw hh mi, n ss, s ms Operators List of Operators Operator + (Text Concatenation) + Text + Text Concatenates two text values in that exact order. Not supported by Oracle and PostgreSQL. In cases where Oracle or PostgreSQL raises an error, please use the CONCAT function instead. Text To return employee s full name from [FirstName] and [LastName] columns: [FirstName] + ' ' + [LastName]
8 Operator + Add + Numeric/Money + Numeric/Money Datetime + Numeric Numeric + Datetime Adds two numbers or two currency amount, or adds a number of days to a date. The data type with the higher prededence. Two and a half days from hire date: [HireDate] (Subtract) - Numeric/Money - Numeric/Money Datetime - Numeric Subtracts two numbers or two currency amount, or subtracts a number of days from a date. The data type with the higher prededence. The number of products in stock after 10 have been taken out: UnitsInStock - 10 * (Multiply) * Numeric/Money * Numeric/Money Multiplies two numbers, or a currency amount with a number. Number Price after 15% discount: UnitPrice * 0.85 / (Divide) / Numeric/Money / Numeric/Money Divides one number or currency amount by another. Number Price after 50% discount: UnitPrice / 2 = (Equals) = Compares the equality in two s. Employees named John :
9 Operator The of the lower type is converted to the higher type in case data types are different. [FirstName] = 'John' > (Greater Than) > Compares if the the first is higher than the second The of the lower precedence data type is converted to the higher precedence data type in case data types are different. Products with more than 10 units in stock: UnitsInStock > 10 < (Less Than) < Compares if the the first is lower than the second The of the lower precedence data type is converted to the higher precedence data type in case data types are different. Products with less than 3 units in stock: UnitsInStock < 3 >= (Greater Than or Equal To) Compares if the the first is higher
10 Operator >= than or equal to the second The of the lower type is converted to the higher type in case data types are different. <= (Less Than or Equal To) <= Compares if the the first is lower than or equal to the second The of the lower type is converted to the higher type in case data types are different. <> (Not Equal To) <> Compares if the the first is not equal to the second The of the lower precedence data type is converted to the higher precedence data type in case data types are different. types are different. Products still available in stock: UnitsInStock <> 0
11 Attention with Possibly NULL Fields Special attention when checking if a field has value: the equal operator cannot used with NULL, IS NULL and IS NOT NULL should be used instead. To check if there is a photo for an employee in Northwind database: [Photo] IS NOT NULL Similarly, when using other comparison operators (e.g. Greater Than > ) on a field that possibly has NULL value: the NULL case must be tested separately. To check if for employees with hire date later than 2010, including unknown hire date: [HireDate] IS NULL OR [HireDate] > ' '
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