Izenda Functions¶
List of Built-in Functions¶
Function | Description | Result Data Types | Examples |
---|---|---|---|
AVG AVG(expression) Numeric, Money |
Returns the average of the values in a group. Null values are ignored. | Numeric, Money | AVG([Retail].[dbo].[Orders].[Freight]) |
COUNT COUNT(expression) Any data type except Image and Lob. |
Returns the number of items in a group. | Numeric. | COUNT([Retail].[dbo].[Orders].[OrderID]) |
MAX MAX(expression) Any data type except Image and Lob. |
Returns the maximum value in a group. | The same data type as expression. | MAX([Retail].[dbo].[Orders].[Freight]) |
MIN MIN(expression) Any data type except Image and Lob. |
Returns the minimum value in a group. | The same data type as expression. | MIN([Retail].[dbo].[Orders].[Freight]) |
SUM SUM(expression) Numeric, Money. |
Returns the sum of all the values in a group. Null values are ignored. | The same data type as expression. | SUM([Retail].[dbo].[Orders].[Freight]) |
LEN LEN(expression) Text. |
Returns the number of characters of the given text expression, excluding trailing blanks. | Numeric. | LEN([Retail].[dbo].[Orders].[ShipAddress]) |
ROUND ROUND(expression) Numeric, Money. |
Returns the expression rounded to the specified length or precision. | The same data type as expression. | ROUND([Retail].[dbo].[Orders].[Freight],0) |
CONCAT CONCAT(expression, expression [, ...]) Text. |
Returns the concatenation of all the parameters in that exact order. | Text. | CONCAT('ab','cd',[SHIPCOUNTRY]) |
GETDATE GETDATE() N/A. |
Returns the current system date and time. | Datetime. | GETDATE() |
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. date: an expression that returns a datetime value. |
Returns a new datetime value based on adding an interval to the specified date. | Datetime. | DATEADD(day,3,[DueDate]) |
DATEDIFF DATEDIFF(datepart, startdate, enddate) datepart: the part of the date. (See table List of Dateparts and Abbreviations) startdate, enddate: expressions that return datetime values. |
Returns the number of date and time boundaries crossed between two specified dates. | Numeric. | DATEDIFF(day,[OrderDate],[ShipDate]) |
DATEPART DATEPART(datepart, date) datepart: the part of the date. (See table List of Dateparts and Abbreviations) date: an expression that returns a datetime value. |
Returns a number representing the specified datepart of the specified date. | Numeric. | DATEPART(DAY,[Retail].[dbo].[Orders].[OrderDate]) |
CONVERT CONVERT(data_type, expression) data_type: any data type. expression: any expression. |
Explicitly converts an expression of one data type to another, similar to CAST..AS . |
The same data type as data_type. | CONVERT(TEXT,[Retail].[dbo].[Orders].[OrderDate]) |
CAST..AS CAST(expression AS data_type) data_type: any data type. expression: any expression. |
Explicitly converts an expression of one data type to another, similar to CONVERT . |
The same data type as data_type. | CAST([Retail].[dbo].[Orders].[OrderID] AS TEXT) |
ISNULL ISNULL(check_expression, replacement_expression) check_expression and replacement_expression: any data type. |
Returns the value of check_expression if it is not NULL; otherwise, returns the value of replacement_expression. | The same data type as expression. | ISNULL([Retail].[dbo].[Orders].[ShipRegion] , 'No Region') |
BETWEEN..AND BETWEEN(expression, begin_expression, end_expression) Any data type except Image and Lob. |
Returns TRUE if the value of test_expression is greater than or equal to the value of begin_expression and less than or equal to the value of end_expression, otherwise returns FALSE. | Boolean. | CASE WHEN (BETWEEN ([Retail].[dbo].[Orders].[EmployeeID],1 , 3)) THEN 1000 else [Retail].[dbo].[Orders].[EmployeeID] END |
AND boolean_expression AND boolean_expression Boolean. |
Returns TRUE when both expressions are TRUE, otherwise returns FALSE. | Boolean. | CASE WHEN ([Retail].[dbo].[Orders].[EmployeeID] = 1 AND [Retail].[dbo].[Orders].[CustomerID] = 'DELDG') THEN 1000 else [Retail].[dbo].[Orders].[EmployeeID] end |
OR boolean_expression AND boolean_expression Boolean. |
Returns TRUE when either expression is TRUE, otherwise returns FALSE. | Boolean. | CASE WHEN ([Retail].[dbo].[Orders].[EmployeeID] = 1 OR [Retail].[dbo].[Orders].[EmployeeID] = 2) THEN 1000 else [Retail].[dbo].[Orders].[EmployeeID] end |
DISTINCT DISTINCT (expression) or DISTINCT expression Any data type except Image and Lob. |
Returns unique values. | The same data type as expression. | COUNT(DISTINCT([Northwind].[dbo].[Orders].[ShipCity])) |
IFF IFF (boolean_expression, true_expression[, false_expression]) boolean_expression: Boolean. true_expression, false_expression: any data type except Image and Lob. |
Returns the value of true_expression when boolean_expression is TRUE, otherwise returns the value of false_expression. | The highest precedence data type from data types of true_expression and false_expression. | IIF([Retail].[dbo].[Orders].[EmployeeID] = 2, 200, [Retail].[dbo].[Orders].[EmployeeID]) |
IF..THEN..ELSE..END IF (boolean_expression) THEN (true_expression) [ELSE (false_expression)] END boolean_expression: Boolean. true_expression, false_expression: any data type except Image and Lob. |
Returns the value of true_expression when boolean_expression is TRUE, otherwise returns the value of false_expression. | The highest precedence data type from data types of true_expression and false_expression. | IF ([northwind].[dbo].[Orders].[EmployeeID] < 3) then 'Less' else ( IF (BETWEEN ([northwind].[dbo].[Orders].[EmployeeID] , 3, 6)) then 'More' else 'Most' END) END |
CASE WHEN..THEN..ELSE..END CASE WHEN (when_expression) THEN (result_expression) […n] [ELSE (else_result_expression)] END Any data type except Image and Lob. |
Returns the value of result_expression matching the first when_expression with the value equal to input_expression, otherwise return the value of else_result_expression. | The highest precedence data type from data types of all result_expression s and else_result_expression. |
Case when ([northwind].[dbo].[Orders].[EmployeeID] = 1) then 'less' when ([northwind].[dbo].[Orders].[EmployeeID] = 3 ) then 'mid' when ([northwind].[dbo].[Orders].[EmployeeID] = 4) then 'high' else 'not evaluated' end |
CASE..WHEN..THEN..ELSE..END CASE (input_expression) WHEN (when_expression) THEN (result_expression) […n] [ELSE (else_result_expression)] END Any data type except Image and Lob. |
Returns the value of result_expression matching the first when_expression with the value equal to input_expression, otherwise return the value of else_result_expression. | The highest precedence data type from data types of all result_expression s and else_result_expression. |
CASE 'USA' WHEN [Retail].[dbo].[Orders].[ShipCountry] THEN 1 else [Retail].[dbo].[Orders].[OrderID] END |
**CASE WHEN…THEN…ELSE…END CASE WHEN (when_expression) THEN (result_expression) […n] [ELSE (else_result_expression)] END Any data type except Image and Lob. |
Returns the value of result_expression matching the first when_expression with the value equal to input_expression, otherwise return the value of else_result_expression. | The highest precedence data type from data types of all result_expression s and else_result_expression. |
Case when ([northwind].[dbo].[Orders].[EmployeeID] = 1) then 'less' when ([northwind].[dbo].[Orders].[EmployeeID] = 3 ) then 'mid' when ([northwind].[dbo].[Orders].[EmployeeID] = 4) then 'high' else 'not evaluated' end |
RUNNINGSUM RUNNINGSUM(expression) Numeric, Money. |
Returns the sum of all the values of expression from the first row up to the current row. | The same data type as expression. | RUNNINGSUM([Retail].[dbo].[Orders].[Freight]) |
RUNNINGAVG RUNNINGAVG(expression) Numeric, Money. |
Returns the average of all the values of expression from the first row up to the current row. | The same data type as expression. | RUNNINGAVG([Retail].[dbo].[Orders].[Freight]) |
RUNNINGCOUNT RUNNINGCOUNT(expression) Any data type except Image and Lob. |
Returns the number of unique values of expression from the first row up to the current row. | Numeric. | RUNNINGCOUNT([Retail].[dbo].[Orders].[OrderID]) |
List of Dateparts and Abbreviations¶
Datepart | Abbreviations |
year | yy, yyyy |
quarter | qq, q |
month | mm, m |
dayofyear | dy, y |
day | dd, d |
week | ww, wk |
weekday | dw |
hour | hh |
minute | mi, n |
second | ss, s |
millisecond | ms |