Difference between revisions of "Documentation/How Tos/Calc: SEARCH function"
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: returns <tt>'''3'''</tt>, if regular expressions are enabled. The "." stands for any single character in a regular expression, so <tt>'''"t.n"'''</tt> matches <tt>'''"ten"'''</tt>. | : returns <tt>'''3'''</tt>, if regular expressions are enabled. The "." stands for any single character in a regular expression, so <tt>'''"t.n"'''</tt> matches <tt>'''"ten"'''</tt>. | ||
| + | <tt>'''SEARCH("xyz","abcdef",1)'''</tt> | ||
| + | : returns <tt>'''#VALUE!'''</tt>. | ||
| + | : NOTE: This is an error condition, which must be 'handled' if used as the argument to another function. | ||
| + | : <tt>'''IF( SEARCH("xyz","abcdef",1) , "Substring Present", "ERR: Missing Substring" )'''</tt> | ||
| + | :: returns <tt>'''#VALUE!'''</tt> which is not very useful, therefore we could use either <tt>'''ISERROR()'''</tt> or <tt>'''ISNUMBER()'''</tt> for example: | ||
| + | :: <tt>'''IF( ISERROR( SEARCH("xyz","abcdef",1) ) , "ERR: Missing Substring", "Substring Present" )'''</tt>. | ||
| + | ::: returns <tt>'''"ERR: Missing Substring"'''</tt> (... allowing the IF() to function, and not propagating the error from the SEARCH() function. | ||
| + | :: <tt>'''IF( ISNUMBER( SEARCH("xyz","abcdef",1) ) , "Substring Present", "ERR: Missing Substring" )'''</tt>. | ||
| + | ::: returns <tt>'''"ERR: Missing Substring"'''</tt> (... allowing the IF() to function, and not propagating the error from the SEARCH() function. | ||
| + | :: NOTE: In practice, it may be more maintainable to use ISNUMBER() to avoid negative logic, and it is more indicitive of the evaluation desired: if the substring has a position, then ISNUMBER() is TRUE, else ISNUMBER() is FALSE. | ||
{{Documentation/SeeAlso| | {{Documentation/SeeAlso| | ||
* [[Documentation/How_Tos/Calc: REPLACE function|REPLACE]] | * [[Documentation/How_Tos/Calc: REPLACE function|REPLACE]] | ||
Revision as of 02:04, 18 February 2011
SEARCH
Returns the position of a string of text within another string.
Syntax:
SEARCH(findtext; texttosearch; startposition)
- returns the character position of the first occurrence of findtext within texttosearch.
- startposition (optional) is the position from which the search starts.
- The search is not case-sensitive.
- The search will use regular expressions, if they are enabled (Tools - Options - OpenOffice.org Calc - Calculate).
- A failed search gives the #VALUE! error.
- In Tools - Options - OpenOffice.org Calc - Calculate the setting for Search criteria = and <>must apply to whole cells has no effect.
Example:
SEARCH("yo"; "Yoyo")
- returns 1. The search is case-insensitive.
SEARCH("cho"; "choochoo"; 2)
- returns 5.
SEARCH("t.n"; "often")
- returns 3, if regular expressions are enabled. The "." stands for any single character in a regular expression, so "t.n" matches "ten".
SEARCH("xyz","abcdef",1)
- returns #VALUE!.
- NOTE: This is an error condition, which must be 'handled' if used as the argument to another function.
- IF( SEARCH("xyz","abcdef",1) , "Substring Present", "ERR: Missing Substring" )
- returns #VALUE! which is not very useful, therefore we could use either ISERROR() or ISNUMBER() for example:
- IF( ISERROR( SEARCH("xyz","abcdef",1) ) , "ERR: Missing Substring", "Substring Present" ).
- returns "ERR: Missing Substring" (... allowing the IF() to function, and not propagating the error from the SEARCH() function.
- IF( ISNUMBER( SEARCH("xyz","abcdef",1) ) , "Substring Present", "ERR: Missing Substring" ).
- returns "ERR: Missing Substring" (... allowing the IF() to function, and not propagating the error from the SEARCH() function.
- NOTE: In practice, it may be more maintainable to use ISNUMBER() to avoid negative logic, and it is more indicitive of the evaluation desired: if the substring has a position, then ISNUMBER() is TRUE, else ISNUMBER() is FALSE.
