08-08-2008
How to search for a pattern from bottom to top.
Hi,
I have a file, which is having a pattern "SEARCH" somewhere towards end of the file,
if i am giving " grep -i "SEARCH" $File" , it is taking too much time as file is very big.
So i want to search for the pattern from the back side of the file, how can we search for a pattern in bottom to top of a file.
Thanks
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LEARN ABOUT SUSE
alter_text_search_dictionary
ALTER TEXT SEARCH
DICTIONARY(7) SQL Commands ALTER TEXT SEARCH DICTIONARY(7)
NAME
ALTER TEXT SEARCH DICTIONARY - change the definition of a text search dictionary
SYNOPSIS
ALTER TEXT SEARCH DICTIONARY name (
option [ = value ] [, ... ]
)
ALTER TEXT SEARCH DICTIONARY name RENAME TO newname
ALTER TEXT SEARCH DICTIONARY name OWNER TO newowner
DESCRIPTION
ALTER TEXT SEARCH DICTIONARY changes the definition of a text search dictionary. You can change the dictionary's template-specific options,
or change the dictionary's name or owner.
You must be the owner of the dictionary to use ALTER TEXT SEARCH DICTIONARY.
PARAMETERS
name The name (optionally schema-qualified) of an existing text search dictionary.
option The name of a template-specific option to be set for this dictionary.
value The new value to use for a template-specific option. If the equal sign and value are omitted, then any previous setting for the
option is removed from the dictionary, allowing the default to be used.
newname
The new name of the text search dictionary.
newowner
The new owner of the text search dictionary.
Template-specific options can appear in any order.
EXAMPLES
The following example command changes the stopword list for a Snowball-based dictionary. Other parameters remain unchanged.
ALTER TEXT SEARCH DICTIONARY my_dict ( StopWords = newrussian );
The following example command changes the language option to dutch, and removes the stopword option entirely.
ALTER TEXT SEARCH DICTIONARY my_dict ( language = dutch, StopWords );
The following example command ``updates'' the dictionary's definition without actually changing anything.
ALTER TEXT SEARCH DICTIONARY my_dict ( dummy );
(The reason this works is that the option removal code doesn't complain if there is no such option.) This trick is useful when changing
configuration files for the dictionary: the ALTER will force existing database sessions to re-read the configuration files, which otherwise
they would never do if they had read them earlier.
COMPATIBILITY
There is no ALTER TEXT SEARCH DICTIONARY statement in the SQL standard.
SEE ALSO
CREATE TEXT SEARCH DICTIONARY [create_text_search_dictionary(7)], DROP TEXT SEARCH DICTIONARY [drop_text_search_dictionary(7)]
SQL - Language Statements 2010-05-14 ALTER TEXT SEARCH DICTIONARY(7)