Style/typo fixup of Turbo Boyer-Moore info.

character.  In the second statement, the @code{LIKE} value is not a

constant.

MySQL 4.0 does another optimization on @code{LIKE}.  If you are using

@code{... LIKE "%string%"} and @code{string} is longer than 3 characters

then MySQL will use the turbo-boyer-more algorithm to once initialize

the pattern for the string and then use this pattern to quickly search

after the given string.

MySQL 4.0 does another optimization on @code{LIKE}.  If you use

@code{... LIKE "%string%"} and @code{string} is longer than 3 characters,

MySQL will use the @code{Turbo Boyer-Moore} algorithm to initialise the

pattern for the string and then use this pattern to perform the search

quicker.

@findex IS NULL, and indexes

@cindex indexes, and @code{IS NULL}

@itemize @bullet

@item

Use turbo-boyer-more to speed up @code{LIKE "%keyword%"} searches.

Use @code{Turbo Boyer-Moore} algorithm to speed up @code{LIKE "%keyword%"}

searches.

@item

Fixed bug in @code{DROP DATABASE} with symlink.

@item

select * from t1 where a like "te_t"; 

#

# The following will test the boyer-more code

# The following will test the Turbo Boyer-Moore code

#

select * from t1 where a like "%a%";

select * from t1 where a like "%abcd%";