Documentation/How Tos/Calc: Spreadsheet functions
From Apache OpenOffice Wiki
List of Calc 'Spreadsheet' functions
The socalled 'Spreadsheet' functions find values in tables, or cell references; they include LOOKUP, SEARCH, ADDRESS. They could thus also be described as 'Lookup' functions.
Spreadsheet Lookup functions  
ADDRESS  returns a text representation of a cell reference, given row and column numbers. 
CHOOSE  returns a value from a list, given an index number. 
HLOOKUP  returns a value from a table row, in the column found by lookup in the first row. 
INDEX  returns a value from a table, given a row and column number. 
INDIRECT  returns a reference, given a text string. 
LOOKUP  returns result from one singlecellwide table, corresponding to a lookup search in another. 
MATCH  returns the position of a search item in a single row or column table. 
OFFSET  returns a modified reference, given a reference, an offset, and a desired size. 
VLOOKUP  returns a value from a table column, in the row found by lookup in the first column.

Spreadsheet Information functions  
AREAS  returns the number of areas in a given reference. 
COLUMN  returns the column number(s), given a reference. 
COLUMNS  returns the number of columns in a given reference. 
ERRORTYPE  returns the number corresponding to an error value. 
INFO  returns information about the current working environment. 
ROW  returns the row number(s), given a reference. 
ROWS  returns the number of rows in a given reference. 
SHEET  returns the sheet number, given a reference. 
SHEETS  returns the number of sheets in a given reference.

Other functions  
DDE  returns information from other documents and applications, using the "DDE" protocol. 
HYPERLINK  sets a cell to open a hyperlink (in another application) when clicked. 
STYLE  applies a style (for example a colour) to a cell. 
See Also