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Optimize the indexes on the files table to speed up select queries

This commit is contained in:
chme 2014-12-27 21:20:36 +01:00
parent 12b46ad94d
commit 5cb06980e3
1 changed files with 41 additions and 9 deletions
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50
src/db.c
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@ -4468,7 +4468,7 @@ db_perthread_deinit(void)
"CREATE INDEX IF NOT EXISTS idx_sari ON files(songartistid);"
#define I_SONGALBUMID \
"CREATE INDEX IF NOT EXISTS idx_sali ON files(songalbumid);"
"CREATE INDEX IF NOT EXISTS idx_sali ON files(songalbumid, disabled, media_kind, album_sort, disc, track);"
#define I_STATEMKINDSARI \
"CREATE INDEX IF NOT EXISTS idx_state_mkind_sari ON files(disabled, media_kind, songartistid);"
@ -4486,7 +4486,7 @@ db_perthread_deinit(void)
"CREATE INDEX IF NOT EXISTS idx_composer ON files(composer, composer_sort);"
#define I_TITLE \
"CREATE INDEX IF NOT EXISTS idx_title ON files(title, title_sort);"
"CREATE INDEX IF NOT EXISTS idx_title ON files(disabled, media_kind, title_sort, data_kind);"
#define I_ALBUM \
"CREATE INDEX IF NOT EXISTS idx_album ON files(album, album_sort);"
@ -5610,18 +5610,34 @@ db_upgrade_v15(void)
#define U_V16_CREATE_IDX \
"CREATE INDEX IF NOT EXISTS idx_grp_type_name ON groups(type, name);"
#define U_V16_DROP_IDX_TITLE \
"DROP INDEX idx_title;"
#define U_V16_CREATE_IDX_TITLE \
"CREATE INDEX IF NOT EXISTS idx_title ON files(disabled, media_kind, title_sort, data_kind);"
#define U_V16_DROP_IDX_SONGALBUMID \
"DROP INDEX idx_sali;"
#define U_V16_CREATE_IDX_SONGALBUMID \
"CREATE INDEX IF NOT EXISTS idx_sali ON files(songalbumid, disabled, media_kind, album_sort, disc, track);"
#define U_V16_SCVER \
"UPDATE admin SET value = '16' WHERE key = 'schema_version';"
static const struct db_init_query db_upgrade_v16_queries[] =
{
{ U_V16_DROP_IDX, "drop index type/persistentid" },
{ U_V16_DROP_TRG_NEW, "drop trigger new files" },
{ U_V16_DROP_TRG_UPDATE, "drop trigger update files" },
{ U_V16_DROP_TBL_GROUPS, "drop table groups" },
{ U_V16_CREATE_TBL_GROUPS, "create table groups" },
{ U_V16_CREATE_IDX, "create index type/name" },
{ U_V16_SCVER, "set schema_version to 16" },
{ U_V16_DROP_IDX, "drop index type/persistentid" },
{ U_V16_DROP_TRG_NEW, "drop trigger new files" },
{ U_V16_DROP_TRG_UPDATE, "drop trigger update files" },
{ U_V16_DROP_TBL_GROUPS, "drop table groups" },
{ U_V16_CREATE_TBL_GROUPS, "create table groups" },
{ U_V16_CREATE_IDX, "create index type/name" },
{ U_V16_DROP_IDX_TITLE, "drop index title on files" },
{ U_V16_CREATE_IDX_TITLE, "create index title on files" },
{ U_V16_DROP_IDX_SONGALBUMID, "drop index songalbumid on files" },
{ U_V16_CREATE_IDX_SONGALBUMID, "create index songalbumid on files" },
{ U_V16_SCVER, "set schema_version to 16" },
};
static int
@ -5782,6 +5798,14 @@ db_check_version(void)
{
DPRINTF(E_LOG, L_DB, "Database schema outdated, schema upgrade needed v%d -> v%d\n", cur_ver, SCHEMA_VERSION);
ret = sqlite3_exec(hdl, "BEGIN TRANSACTION;", NULL, NULL, &errmsg);
if (ret != SQLITE_OK)
{
DPRINTF(E_LOG, L_DB, "Error starting transaction: %s\n", errmsg);
sqlite3_free(errmsg);
return -1;
}
switch (cur_ver)
{
case 10:
@ -5849,6 +5873,14 @@ db_check_version(void)
return -1;
}
ret = sqlite3_exec(hdl, "END TRANSACTION;", NULL, NULL, &errmsg);
if (ret != SQLITE_OK)
{
DPRINTF(E_LOG, L_DB, "Error ending transaction: %s\n", errmsg);
sqlite3_free(errmsg);
return -1;
}
/* What about some housekeeping work, eh? */
DPRINTF(E_INFO, L_DB, "Now vacuuming database, this may take some time...\n");