Documentation/Calc Functions/DMAX

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Function name:

DMAX

Category:

Database

Summary:

DMAX returns the maximum content of a cell (field) in a database (all records) that matches the specified search conditions.

Syntax:

DMAX(Database; DatabaseField; SearchCriteria)

Returns:

Arguments:

Database is the cell range defining the database.

DatabaseField specifies the column where the function operates on after the search criteria of the first parameter is applied and the data rows are selected. It is not related to the search criteria itself. For the DatabaseField parameter you can enter a reference to a header cell or a number to specify the column within the Database area, starting with 1. To reference a column by means of the literal column header name, place quotation marks around the header name.

SearchCriteria is the cell range containing search criteria. If you write several criteria in one row they are connected by AND. If you write the criteria in different rows they are connected by OR. Empty cells in the search criteria range will be ignored.

Choose Tools > Options > LibreOffice Calc > Calculate to define how LibreOffice Calc acts when searching for identical entries.

See also the Wiki page about Conditional Counting and Summation.

For the DatabaseField parameter you can enter a reference to a header cell or a number to specify the column within the Database area, starting with 1. To reference a column by means of the literal column header name, place quotation marks around the header name.

Additional details:

The Database category may be confused with a database integrated in LibreOffice. However, there is no connection between a database in LibreOffice and the Database category in LibreOffice Calc.

The search supports wildcards or regular expressions. With regular expressions enabled, you can enter "all.*", for example to find the first location of "all" followed by any characters. If you want to search for a text that is also a regular expression, you must either precede every character with a "\" character, or enclose the text into \Q...\E. You can switch the automatic evaluation of wildcards or regular expression on and off in Tools - Options - LibreOffice Calc - Calculate.

When using functions where one or more arguments are search criteria strings that represents a regular expression, the first attempt is to convert the string criteria to numbers. For example, ".0" will convert to 0.0 and so on. If successful, the match will not be a regular expression match but a numeric match. However, when switching to a locale where the decimal separator is not the dot makes the regular expression conversion work. To force the evaluation of the regular expression instead of a numeric expression, use some expression that can not be misread as numeric, such as ".[0]" or ".\0" or "(?i).0".

Examples:

The following data will be used in some of the function description examples:

The range A1:E10 lists the children invited to Joe's birthday party. The following information is given for each entry: column A shows the name, B the grade, then age in years, distance to school in meters and weight in kilograms.

A B C D E
1 Name Grade Age Distance to School Weight
2 Andy 3 9 150 40
3 Betty 4 10 1000 42
4 Charles 3 10 300 51
5 Daniel 5 11 1200 48
6 Eva 2 8 650 33
7 Frank 2 7 300 42
8 Greta 1 7 200 36
9 Harry 3 9 1200 44
10 Irene 2 8 1000 42
11
12
13 Name Grade Age Distance to School Weight
14 >600
15
16 DCOUNT 5

The formula in cell B16 is =DCOUNT(A1:E10;D1;A13:E14)

To find out how much the heaviest child in each grade weighed in the above example (scroll up, please), enter the following formula in B16:

=DMAX(A1:E10;"Weight";A13:E14)

Under Grade, enter 1, 2, 3, and so on, one after the other. After entering a grade number, the weight of the heaviest child in that grade appears.

Related LibreOffice functions:

ODF standard:

Equivalent Excel functions: