Commit cc888338 authored by mitshel's avatar mitshel
Browse files

Добавление индексов к таблицам bauthors и bgenres для ускорения выборки данных

parent 0542679a

db/dbcrea.sql

+2 −1
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@@ -47,7 +47,8 @@ KEY(last_name,first_name)); 
create table bauthors (

author_id INT not NULL,

book_id INT not NULL,

PRIMARY KEY(book_id,author_id));

PRIMARY KEY(book_id,author_id),

INDEX(author_id));



insert into authors(author_id,last_name) values(1,"Неизвестный Автор");

db/genres.mksql

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@@ -19,7 +19,8 @@ echo 
echo "create table bgenres("

echo "genre_id INT not NULL,"

echo "book_id INT not NULL,"

echo "PRIMARY KEY(book_id,genre_id));"

echo "PRIMARY KEY(book_id,genre_id),"

echo "INDEX(genre_id));

echo "commit;"

echo

cat genres.txt | grep -v '#' | awk -F'@' '{gsub(/^ +| +$/,"",$1)} {gsub(/^ +| +$/,"",$2)} {gsub(/^ +| +$/,"",$3)} {print "insert into genres(genre,subsection,section) values(\""$1"\",\""$2"\",\""$3"\");"}'

db/genres.sql

+1 −232

File changed.

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db/indexes.sql

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create index idx_bauthors_aid on bauthors (author_id);

create index idx_bgenres_gid on bgenres (genre_id);