mirror of https://github.com/postgres/postgres
Bruce Momjian
24 years ago
parent
561dca3263
commit
485fc354e1
@ -0,0 +1,9 @@ |
||||
|
||||
reindex |
||||
|
||||
Indexes are known to grow over time. Being as vacuum doesn't slow or |
||||
clean up after this growth, and there is no command to reindex all tables |
||||
in a database, it made sense to construct this utility to do it. |
||||
|
||||
Shaun Thomas <sthomas@townnews.com> |
||||
|
||||
@ -0,0 +1,223 @@ |
||||
#!/bin/sh |
||||
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- # |
||||
# Package : reindexdb Version : $Revision: 1.1 $ |
||||
# Date : 05/08/2002 Author : Shaun Thomas |
||||
# Req : psql, sh, perl, sed Type : Utility |
||||
# |
||||
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- # |
||||
|
||||
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- # |
||||
# Function Definitions |
||||
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- # |
||||
|
||||
function usage() |
||||
{ |
||||
echo "$CMDNAME reindexes a PostgreSQL database." |
||||
echo |
||||
echo "Usage:" |
||||
echo " $CMDNAME [options] [dbname]" |
||||
echo |
||||
echo "Options:" |
||||
echo " -h, --host=HOSTNAME Database server host" |
||||
echo " -p, --port=PORT Database server port" |
||||
echo " -U, --username=USERNAME Username to connect as" |
||||
echo " -W, --password Prompt for password" |
||||
echo " -d, --dbname=DBNAME Database to reindex" |
||||
echo " -a, --all Reindex all databases" |
||||
echo " -t, --table=TABLE Reindex specific table only" |
||||
echo " -i, --index=INDEX Reindex specific index only" |
||||
echo " -e, --echo Show the command being sent to the backend" |
||||
echo " -q, --quiet Don't write any output" |
||||
echo |
||||
echo "Read the description of the SQL command REINDEX for details." |
||||
echo |
||||
exit 0 |
||||
} |
||||
|
||||
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- # |
||||
# Program Body |
||||
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- # |
||||
|
||||
CMDNAME=`basename "$0"` |
||||
PATHNAME=`echo $0 | sed "s,$CMDNAME\$,,"` |
||||
|
||||
# Try valliantly to get the location of psql, since you can't ever |
||||
# really know where it has been placed. We'll start by trying the |
||||
# path. If that fails, we'll try the directory where this script |
||||
# resides. Then on to whereis, and finally locate. Wish us luck. |
||||
|
||||
if x=`psql -V 2>/dev/null | grep psql`; then |
||||
PSQL='psql' |
||||
elif [ -f ${PATHNAME}psql ]; then |
||||
PSQL=${PATHNAME}psql; |
||||
elif x=`whereis -b psql 2>/dev/null | sed 's/.* //'`; then |
||||
PSQL=$x |
||||
elif x=`locate -r bin/psql$ -n 1 2>/dev/null`; then |
||||
PSQL=$x |
||||
else |
||||
echo "$CMDNAME: Could not find psql to talk to postgres installation." |
||||
echo "Please make sure psql is in your path, or that this script is in" |
||||
echo "the same directory as psql was installed." |
||||
exit 1 |
||||
fi |
||||
|
||||
# Now, go through all of our command-line options and get each operation |
||||
# we said we'd accept in the usage listing. |
||||
|
||||
while [ "$#" -gt 0 ] |
||||
do |
||||
# Show help. |
||||
case "$1" in |
||||
--help|-\?) |
||||
usage |
||||
exit 0 |
||||
;; |
||||
|
||||
# All of the following are postgres options. We can pass them on |
||||
# directly, without interpreting them in any way. We don't care. |
||||
# Anything that allows a space, we'll get the next *two* arguments |
||||
# and make sure to pass those along. |
||||
|
||||
--host|-h|-p|--port|-U|--username) |
||||
PSQLOPT="$PSQLOPT $1 $2" |
||||
shift |
||||
;; |
||||
-h*|--host=*|-p*|--port=*|-U*|--username=*|-W|--password) |
||||
PSQLOPT="$PSQLOPT $1" |
||||
;; |
||||
|
||||
# From this point on, we're setting options that are required for |
||||
# or only valid in This script. This includes which database(s) to |
||||
# reindex, which tables, or which indexes, and so on. |
||||
|
||||
# Echoing. We'll *not* use this in queries we use to get lists. |
||||
--echo|-e) |
||||
ECHOOPT="-e" |
||||
;; |
||||
|
||||
# Do not echo messages. We'll direct all output to /dev/null. |
||||
--quiet|-q) |
||||
ECHOOPT="$ECHOOPT -o /dev/null" |
||||
quiet=1 |
||||
;; |
||||
|
||||
# Reindex all databases, all tables, all applicable indexes. |
||||
--all|-a) |
||||
alldb=1 |
||||
;; |
||||
|
||||
# Database to connect to, if not all of them. |
||||
--dbname|-d) |
||||
dbname="$2" |
||||
shift |
||||
;; |
||||
-d*|--dbname=*) |
||||
dbname=`echo $1 | perl -pn -e 's/^--?d(bname=)?//'` |
||||
;; |
||||
|
||||
# Reindex specific Table. Disables index reindexing. |
||||
--table|-t) |
||||
table="$2" |
||||
shift |
||||
;; |
||||
-t*|--table=*) |
||||
table=`echo $1 | perl -pn -e 's/^--?t(able=)?//'` |
||||
;; |
||||
|
||||
# Reindex specific index. Disables table reindexing. |
||||
--index|-i) |
||||
index="$2" |
||||
shift |
||||
;; |
||||
-i*|--index=*) |
||||
index=`echo $1 | perl -pn -e 's/^--?i(ndex=)?//'` |
||||
;; |
||||
|
||||
# Yeah, no options? Whine, and show usage. |
||||
-*) |
||||
echo "$CMDNAME: invalid option: $1" 1>&2 |
||||
usage; |
||||
exit 1 |
||||
;; |
||||
|
||||
# Finally, it's possible that the database name was just the last |
||||
# unlabeled option. So, let's get that. |
||||
*) |
||||
dbname="$1" |
||||
;; |
||||
esac |
||||
|
||||
shift # Shift off each argument as we loop. |
||||
|
||||
done |
||||
|
||||
# Get a list of all databases we'll be using. This first case is if we |
||||
# were asked to do all databases. |
||||
if [ "$alldb" ]; then |
||||
|
||||
if [ "$dbname" ] || [ "$index" ] || [ "$table" ]; then |
||||
echo "$CMDNAME: cannot reindex all databases and a specific database," 1>&2 |
||||
echo " table, or index at the same time." 1>&2 |
||||
exit 1 |
||||
fi |
||||
|
||||
# Execute a command to pull back all databases the user specified can |
||||
# connect to. That's the list we'll be using. It's also why it's |
||||
# a good idea for this to be a super-user. |
||||
dbname=`$PSQL $PSQLOPT -q -t -A -d template1 -c 'SELECT datname FROM pg_database WHERE datallowconn'` |
||||
|
||||
# Ok, if it's not all databases, make sure at least one database is |
||||
# specified before continuing. |
||||
elif [ -z "$dbname" ]; then |
||||
echo "$CMDNAME: missing required argument: database name" 1>&2 |
||||
usage; |
||||
exit 1 |
||||
fi |
||||
|
||||
# No. We can't reindex a specific index and table at the same time. |
||||
# Complain about this, and move on. |
||||
if [ "$table" ] && [ "$index" ]; then |
||||
echo "$CMDNAME: cannot reindex a specific table and a specific index" 1>&2 |
||||
echo "at the same time." 1>&2 |
||||
exit 1 |
||||
fi |
||||
|
||||
# If index was set, reindex that index. |
||||
if [ "$index" ]; then |
||||
$PSQL $PSQLOPT $ECHOOPT -c "REINDEX INDEX $index" -d $dbname |
||||
|
||||
# Ok, no index. Is there a specific table to reindex? |
||||
elif [ "$table" ]; then |
||||
$PSQL $PSQLOPT $ECHOOPT -c "REINDEX TABLE $table" -d $dbname |
||||
|
||||
# No specific table, no specific index, either we have a specific database, |
||||
# or were told to do all databases. Do it! |
||||
else |
||||
|
||||
sql="SELECT distinct tablename FROM pg_indexes WHERE tablename NOT LIKE 'pg_%'" |
||||
for db in $dbname; do |
||||
|
||||
# Only print which database we're currently reindexing if not in |
||||
# quiet mode, and we're doing more than one database. |
||||
[ "$alldb" ] && [ -z "$quiet" ] && echo "Reindexing $db" |
||||
|
||||
# Ok, reindex every table in the database. Use the same method |
||||
# we used to get a list of databases, and get a list of tables in this |
||||
# database that we may reindex. |
||||
tables=`$PSQL $PSQLOPT -q -t -A -d $db -c "$sql"` |
||||
for tab in $tables; do |
||||
$PSQL $PSQLOPT $ECHOOPT -c "REINDEX TABLE $tab" -d $db |
||||
done |
||||
|
||||
done |
||||
|
||||
fi |
||||
|
||||
# If any of the commands we've executed above failed in any way, bail |
||||
# out with an error. |
||||
if [ "$?" -ne 0 ]; then |
||||
echo "$CMDNAME: reindex $index $table $dbname failed" 1>&2 |
||||
exit 1 |
||||
fi |
||||
|
||||
exit 0 |
||||
Loading…
Reference in new issue