11,677
edits
Changes
Updating to match new version of source page
Expression Example:
==Basic structure of a Expression (Formula) == System variable type operand ====Are system pre-defined variables. These values are replaced in run-time by pre-determined values, delimited by double quotes (") and preceded by star (#). By now only one variable is available: "#null" that indicates null values or fields.
==== Identifier ====
It is the name of the field or column involved in the expression, it must be delimited by double quotes. * Examples: "Average Price". "Screw 1\" philips", "Seler" ==== Value Operand ==== It's the numerical values. You can use both while values and decimal values. For decimal values, the decimal separator should be the point. * Examples: 1, 1.05, 2.55 * Important: Do not use thousand separator in numeric values. ==== Text Operand ==== It's the text operands. If you want to use this type of operand in a expression, you must delimit them by the single quotation mark ('). * Examples: 'John Snow', 'California', 'Spaghetti' ==== Date Operand ==== These are values that express any date. To represent a date in expressions the behaviour is similar to text operands, i.e. the content must be surrounded by single quotation marks ('). However, the mask ''dd/MM/yyyy'' must be used. * Examples: '01/01/2019', '14/11/2019', '25/12/2019' ==== Boolean Operand ==== They're operators of the true or false type. Normally user to validate, or not, a condition in a more complex expression. * Examples: true, false ==== Parentheses ==== Used to group and separate parts of on expression. Expressions within parentheses are processed first. * Example: ("Profit"/"Total Price") + 10 ==== System variable Operand ==== These are predefined variables in the system. To use the system variables you must precede them by hashtag (#) and delimit them by double quotes("). Currently only the "#null" variable is available and indicates null content. * Example: IF("Product" == "#null";0;20) == Arithmetic Expressions === Arithmetic expressions relate two operands (which can be any the operands described above, or another expression) to make up the sum, subtraction, multiplication or division.
==== Sum (+) ====
==== Subtraction (-) ====
Subtract two value operandsor another expression result. Represented by the subtract or hyphen (''-) character'' charecter. Syntax: '' <operand/operating or expressionresult> '''- ''' <operand/operating or expressionresult>''. Example: '''Examples''': "Gross SalePrice" - "Taxes";''' - Subtracts the values from the ''Price'' and ''Taxes'' fields.
==== Multiplication (*) ====
Multiplies two value operands or another expression result. Represented by the multiplication charecter ''*''. Syntax: <operating or expression result> '''*''' <operating or expression result> Example: '''"Quantity" * "Unit Price"''' - Multiplies the value of the ''Quantity'' field by the value of the ''Unit Price'' field. ==== Division(/) ====Divides Divide two value operandsor another expression result. Represented by the divide or bar (division charecter ''/) character''. Syntax: '' <operand/operating or expressionresult> '''/ ''' <operand/operating or expressionresult>''. Example: '''Examples''': "Total ValuePrice" / "AmountQuantity"''' - Divides the value of the ''Price'' field by the value of the ''Quantity'' field. == Relational Expressions == Relational expressions compare two operands (value/text or other expression) to assess whether a condition is true or false. Normally used with decision functions, such as ''IF''.
==== Equality (==) ====
It compares if two operands are the same, returning true if they are the same or false if they are different. Represented by the equality operator ''=== Relational Expressions ===''.
==== Different (!=) ====
==== Greater than (>) ====
Compares if the first operator (from the left) is greater than the second operator (from the right), returning true if it is greater and false if it is lesser or equal. Represented by the greater operator ''>''. Syntax: <operating or expression result> '''>''' <operating or expression result>Example: '''IF("Gross Value" > 1000;1;0)''' - If the ''Gross Value'' is greater than ''1000'', returns the value ''1'', if not the value ''0'' ==== Greater or equal than to (>=) ====Return ''true'' Compares if the first operator (from the first expression left) is greater than or equal to the second expression operator (from the right), returning true if it is greater or equal and ''false'' otherwiseif it is lesser. Represented by the greater or equal operator ''>=''. Syntax: <operating or expression result> '''>=''' <operating or expression result>Example: '''IF("Gross Value" >=2500;100;0)''' - If ''Gross Value'' is greater than or equal to ''2500'' returns ''100'', otherwise returns ''0'' ==== Less than (<) ==== Compares if teh first operator (from the left) is lesser than the second operator (from the right), returning true if it is lesser and false if it is greater or equal. Represented by the Lesser operator ''<''. Syntax: <operating or expression result> '''<'''<operating or expressionresult> Example: '''IF("Gross Value" < 100;50;200)''' - If ''Gross Value'' is less than ''100'', returns ''50'' if not ''200'' ==== Less or equal to (<=) ==== Compares if the first operator (from the left) is lesser or equal to the second operator (from the right), returning true if it is lesser or equal and false if it is greater. Represented by the lesser or equal operator ''<=''. Syntax: <operating or expression result>'''<= ''' <operating or expressionresult>Example: '''IF("Gross Value" <= 500;100;0)''' - If ''Gross Value'' is less than or equal to ''500'' returns ''100'', if not ''0'' == Logical Expressions == Logical expressions group together two operands (Boolean or other expression) to make up a logical expression, in order to evaluate the relationship of two Boolean operators to a true or false result. This type of expression is usually used for decision making, such as IF and with relational expressions. ==== And Operator (&&) ==== Executes the logical operation ''AND'' between two Boolean values. Both values must return true so that the result of the operation is true. Represented by the ''&&''operator. Syntax: <expression> && <expression>Examples: ''': IF(("Order DatePrice" >0) && ("Seller" == '01/01/2011John Snow');450;0)''' - If ''Price'' is greater than ''0'' '''AND''' ''Seller'' is equal to ''John Snow'', returns ''450'' if not returns ''0'' '''IF(("Order DateCity"!= "#null") && ("Product" != 'Lasagna');1;0);''' - If ''City'' is non-null '''AND''' ''Product'' is different from ''Lasagna'' returns ''1'' if it does not return ''0''
==== Lesser or equal than Or Operator (<=||) ====Return ''true'' if the the first expression is lesser than or equal to the second expression and ''false'' otherwise. Represented by the lesser or equal operator (<=). Syntax: ''<expression> <= <expression>''. '''Examples''': IF("Order Date" <= '01/01/2011';"Order Date";0).
Performs the logical ''OR'' operation between two Boolean values. A two values must be true so that the result of the operation is true. Represented by the operator ''||''.
Syntax: <expression> || <expression>Examples: '''IF(("Price" > 1000) || ("Profit" >=50);75;55)''' - If ''Price'' is greater than ''1000'' '''OR''' ''Profit'' is greater than or equal to ''50'' returns ''75'' if not ''55'' '''IF(("City" !="#null") || ("Product" != Logical Expressions ==='Lasagna');1;0)''' - If ''City'' is non-null '''OR''' ''Product'' is different from ''Lasagna'' returns ''1'' if it does not return ''0''
==== And Denial Operator (&&!) ====Performs the logical operation ''AND'' between two boolean values. The two operands must be ''true'' for the result of the operation to be ''true''. Represented by the ''AND'' operator (&&). Syntax: ''<expression> && <expression>''. '''Examples''': IF((Gross Sales > '0') && (Seller == 'John Snow');'Sold';'Not Sold'), IF((City!="#null") && (Date<DAY_FROM_TODAY(0));1;0);
== Auxiliary Functions ==
Basic helper functions are standard system functions and implement useful features for composing complex expressions. ==== ABS function ==== Function that returns the absolute numeric value of a base numeric value. Syntax: ABS(<value operator or expression>)Example: '''ABS("Price" / "Quantity")''' - Returns the absolute value of ''Price'' divided by ''Quantity'' ==== AVG function ==== Returns the average of the values of a sequence of values. It can be used to return the average of different values of the same row of tables. Syntax: AVG(<expression 1>; <expression 2>; ...)Example: '''AVG("Taxes"; "Profit"; "Cost")''' - Returns the average between the sum of the ''Taxes'', ''Profit'' and ''Cost'' columns ==== BETWEEN function ==== Checks whether a value is within the limits of the parameters used. Return true or false. Syntax: BETWEEN(<expression to be tested>; <initial limit>; <end limit>)Example: '''BETWEEN("Date Issued"; '01/01/2019'; '31/12/2019')''' - Returns true if ''Date Issued'' is between ''01/01/2019'' and ''12/31/2019''. Otherwise returns false ==== COUNT function ==== Returns number of occurrences (lines) for column or value. By now this functions works only at Datasource expressions Syntax: COUNT(<expression>) Example: '''COUNT("Product")''' - Returns number of occurrences (lines) of products ==== COUNT_DISTINCT function ==== Returns number of unique occurrences (lines) for column or value. By now this functions works only at Datasource expressions Syntax: COUNT_DISTINCT(<expression>) Example: '''COUNT_DISTINCT("Product")''' - Returns number of unique (different) occurrences (lines) of products ==== IF ELSE function (If .... Otherwise ...) ==== Tests a Boolean expression and applies a condition to true or another condition to false. You need three parameters, separated by semicolons (;). The first parameter is the expression to be tested, the second the value to be applied in case of true, and the third to be applied in case of false. Syntax: IF(<expression to be tested>; <expression if true>; <expression if false>)Examples: '''IF(BETWEEN("Value";0;100);10;250)''' - If ''Value'' is between ''0'' and ''100'' returns ''10'', if not ''250'' '''IF("Profit" == 0;0;"Profit" + "Taxes")''' - If ''Profit'' equals ''0'' returns ''0'', if it does not return the sum between ''Profit'' and ''Taxes'' '''IF("Product Code" == 3231;0;"Quantity" * 3;"Quantity")''' - If ''Product Code'' equals ''3231'' returns ''Quantity'' plus 3 ==== LOG function ==== Returns the logarithm of a number on a defined basis. It can be used with only one parameter, in this case the "base 10" logarithm is used . If two parameters are used, the second server to inform the base to be used by the logarithm. Syntax: LOG(<expression>;<base>)Examples: '''LOG("Profit")'''- Returns the logarithm of the field ''Profit'' '''LOG("Price";2)''' - Returns the logarithm of the ''Price'' field in base ''2'' ==== MAX function ==== Returns the largest value between two values. Syntax: MAX(<expression 1>;<expression 2>)Example: '''"Value" / MAX("Quantity";1)''' - Divides ''Value'' by the largest value between ''Quantity'' and ''1'' ==== MIN function ==== Returns the smallest value between two values. Syntax: MIN(<expression 1>; <expression 2>)Example: '''"Value" / MIN("Cost"; 100)''' - Divides ''Value'' by the smallest value between ''Cost'' and ''100'' ==== POWER function ==== Returns the power of a value in a defined exponent. It can be used with only one parameter, in this case it considers the default exponent 2. If a second parameter is passed, this will be the exponent. Syntax: POW(<expression>; <exponent>)Examples: '''POW("Profit")''' - Returns the power of the ''Profit'' value. '''POW("Cost"; 3)''' - Returns the power of the ''Cost'' value, raised to ''3'' ==== RANDOM function ==== Returns a random number within the range of values passed as arguments. Syntax: RANDOM(<start limit>; <end limit>)Example: '''RANDOM(10;100)''' - Returns a random number between ''10'' and ''100'' ==== ROUND function ==== Returns the rounded value of a value column or value. Syntax: ROUND(<value>;<precision>) Example: '''ROUND("Profit")''' - If Profit 10.38 returns 10.00 '''ROUND(15.65)''' - Returns 16.00 '''ROUND(1.777;1)''' - Returns 1.8 == Basic == SQRT function (Square Root) ==== Returns the square root of a value. Syntax: SQRT(<value or expression>)Examples: '''SQRT("Profit")''' - Returns the square root of the value ''Profit'' '''SQRT(81)''' - Returns the square root of ''81'' ==== LIKE function ==== Returns true if the desired content is found in the list and false otherwise. It needs two parameters, the first is the data to query and the second is the term to be found. Remembering that it is necessary to use the wildcard operator “%” and surround the term by single quotation mark. Syntax: LIKE(< data>; <term>)Example: '''LIKE("Product"; '%anh%')''' - Returns true if the ''Product'' contains the term ''anh'' or false otherwise == Date Functions == Date functions are operations that take a date as a parameter and also return a date. There are some constants to assist in using date functions, they are: * 0: ''DATE_FIELD_YEAR'' (Part of the year)* 1: ''DATE_FIELD_MONTH'' (Month Part)* 2: ''DATE_FIELD_DAY'' (Daypart)* 3: ''DATE_FIELD_FORTNIGHT'' (Part of fortnight)* 5: ''DATE_FIELD_WEEK'' (Part of the Week) ==== DATE_PART function (Date Part) ==== Returns part of a date. It needs two parameters, the first is the reference date and the second is the constant that represents which part of the date we want to get. Syntax: DATE_ PART(<date>; <constant representing which part>)Example: '''DATE_ PART("Issued Date"; 0)''' - Returns the year portion of the ''Issued Date'' ==== DAY_FROM_TODAY function (Days from today) ==== Returns a days count backward (negative) or forward (positive) from today. You need a parameter that indicates the number of days to add or subtract. Syntax: DAY_FROM_TODAY(<number of days>)Example: '''DAY_FROM_TODAY(-1)''' - Returns yesterday's date
==== Min LAST_DAY_OF function (Last day of) ====Returns the smaller value between two numbers. Syntax: ''MIN(<expression_value1>;<expression_value2>)''. Need two value parameters and returns a value data type. '''Examples''': "Total Value"/MIN("Quantity";"1");
==== Constants list NEW_DATE function (New date) ====** '''0''': DATE_FIELD_YEAR (Year part);** '''1''': DATE_FIELD_MONTH (Month part);** '''2''': DATE_FIELD_DAY (Day part);** '''3''': DATE_FIELD_FORTNIGHT (Fortnight part);** '''5''': DATE_FIELD_WEEK (Week part);
Creates a new date. It needs three parameters, the first corresponds to the day (between 1 and 31), the second month (between 1 and 12) and the third the year. The date is created from year to day, ie the day must be valid for the month and year (considering 29/02, the year must be leap).
==== First day NUM_OF_DAYS function (Number of days) ====Return the first day of a grouping. This function have two variations:* '''First way''': Syntax: ''FIRST_DAY_OF(<constant_grouping>;<expression_date>)''. Need two parameters, the first is the constant grouping in which you want to obtain the first date: 0, 1, 2, 3 or 5 (see constants list) and the second is the anchor base date. '''Examples''': FIRST_DAY_OF(0;DAY_FROM_TODAY(0)) - first day of year (0) from today (DAY_FROM_TODAY(0)), FIRST_DAY_OF(1;"Order Date") - first day of month (1) based on the "Order Data";* '''Second way''': Syntax: ''FIRST_DAY_OF(<constant_grouping>;<constant_modify_date>;<modify_date_value>)''. Need three parameters, the first is the constant grouping in which you want to obtain the first date: 0, 1, 2, 3 or 5 (see constants list), the second is the modifier of the base date from today: 0, 1, 2, 3 or 5 (see constants list) and the third is the amount to change the modifier. '''Examples''': FIRST_DAY_OF(1;0;-1) - first day of the current month (1) from last year (0;-1);
==== Num NUM_OF_MONTHS function (Number of months ) ====Return the number of months between two dates. Syntax: ''NUM_OF_MONTHS(<expression_date1>;<expression_date2>)''. Need two date data type parameters. '''Examples''': NUM_OF_MONTHS(FIRST_DAY_OF(0;"Date");"Date") - Return the number of months between the first day of the year of the "Date" column and the current month of the "Date" column;
Syntax:
NUM_OF_MONTHS(<date 1>; <date 2>)
Example:
'''NUM_OF_MONTHS(FIRST_DAY_OF(0; "Date"); "Date")''' - Returns the number of months between the first day of the year and the current month, based on the ''Date'' column.