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wkcrm/vendor/phpoffice/phpexcel/Documentation/markdown/CalculationEngine/FunctionReference/03-02-Database-Functions.md

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# Calculation Engine - Formula Function Reference
## Function Reference
### Database Functions
#### DAVERAGE
The DAVERAGE function returns the average value of the cells in a column of a list or database that match conditions you specify.
##### Syntax
```
DAVERAGE (database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The average value of the matching cells.
This is the statistical mean.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DAVERAGE(A4:E10,"Yield",A1:B2)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 12
```
##### Notes
There are no additional notes on this function
#### DCOUNT
The DCOUNT function returns the count of cells that contain a number in a column of a list or database matching conditions that you specify.
##### Syntax
```
DCOUNT(database, [field], criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The count of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DCOUNT(A4:E10,"Height",A1:B3)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 3
```
##### Notes
In MS Excel, The field argument is optional. If field is omitted, DCOUNT counts all records in the database that match the criteria. This logic has not yet been implemented in PHPExcel.
#### DCOUNTA
The DCOUNT function returns the count of cells that aren’t blank in a column of a list or database and that match conditions that you specify.
##### Syntax
```
DCOUNTA(database, [field], criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The count of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DCOUNTA(A4:E10,"Yield",A1:A3)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 5
```
##### Notes
In MS Excel, The field argument is optional. If field is omitted, DCOUNTA counts all records in the database that match the criteria. This logic has not yet been implemented in PHPExcel.
#### DGET
The DGET function extracts a single value from a column of a list or database that matches conditions that you specify.
##### Syntax
```
DGET(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**mixed** The value from the selected column of the matching row.
#### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=GET(A4:E10,"Age",A1:F2)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 14
```
##### Notes
There are no additional notes on this function
#### DMAX
The DMAX function returns the largest number in a column of a list or database that matches conditions you specify.
##### Syntax
```
DMAX(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The maximum value of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DMAX(A4:E10,"Profit",A1:B2)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 105
```
##### Notes
There are no additional notes on this function
#### DMIN
The DMIN function returns the smallest number in a column of a list or database that matches conditions you specify.
##### Syntax
```
DMIN(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The minimum value of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DMIN(A4:E10,"Yield",A1:A3)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 6
```
##### Notes
There are no additional notes on this function
#### DPRODUCT
The DPRODUCT function multiplies the values in a column of a list or database that match conditions that you specify.
##### Syntax
```
DPRODUCT(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The product of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DPRODUCT(A4:E10,"Yield",A1:B2)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 140
```
##### Notes
There are no additional notes on this function
#### DSTDEV
The DSTDEV function estimates the standard deviation of a population based on a sample by using the numbers in a column of a list or database that match conditions that you specify.
##### Syntax
```
DSTDEV(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The estimated standard deviation of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DSTDEV(A4:E10,"Yield",A1:A3)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 2.97
```
##### Notes
There are no additional notes on this function
#### DSTDEVP
The DSTDEVP function calculates the standard deviation of a population based on the entire population by using the numbers in a column of a list or database that match conditions that you specify.
##### Syntax
```
DSTDEVP(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The estimated standard deviation of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DSTDEVP(A4:E10,"Yield",A1:A3)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 2.65
```
##### Notes
There are no additional notes on this function
#### DSUM
The DSUM function adds the numbers in a column of a list or database that matches conditions you specify.
##### Syntax
```
DSUM(database, field, criteria)
```
##### Parameters
**database** The range of cells that makes up the list or database.
A database is a list of related data in which rows of related information are records, and columns of data are fields. The first row of the list contains labels for each column.
**field** Indicates which column of the database is used in the function.
Enter the column label as a string (enclosed between double quotation marks), such as "Age" or "Yield," or as a number (without quotation marks) that represents the position of the column within the list: 1 for the first column, 2 for the second column, and so on.
**criteria** The range of cells that contains the conditions you specify.
You can use any range for the criteria argument, as long as it includes at least one column label and at least one cell below the column label in which you specify a condition for the column.
##### Return Value
**float** The total value of the matching cells.
##### Examples
```php
$database = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit' ),
array( 'Apple', 18, 20, 14, 105.00 ),
array( 'Pear', 12, 12, 10, 96.00 ),
array( 'Cherry', 13, 14, 9, 105.00 ),
array( 'Apple', 14, 15, 10, 75.00 ),
array( 'Pear', 9, 8, 8, 76.80 ),
array( 'Apple', 8, 9, 6, 45.00 ),
);
$criteria = array(
array( 'Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height' ),
array( '="=Apple"', '>10', NULL, NULL, NULL, '<16' ),
array( '="=Pear"', NULL, NULL, NULL, NULL, NULL ),
);
$worksheet->fromArray( $criteria, NULL, 'A1' )
->fromArray( $database, NULL, 'A4' );
$worksheet->setCellValue('A12', '=DMIN(A4:E10,"Profit",A1:A2)');
$retVal = $worksheet->getCell('A12')->getCalculatedValue();
// $retVal = 225
```
##### Notes
There are no additional notes on this function
#### DVAR
Not yet documented.
#### DVARP
Not yet documented.