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@mheadd
mheadd / monitor.sh
Created May 13, 2013 20:00
Simple bash script to check whether MySQL is running.
#!/bin/bash
UP=$(pgrep mysql | wc -l);
if [ "$UP" -ne 1 ];
then
echo "MySQL is down.";
sudo service mysql start
else
echo "All is well.";
fi
@ruckus
ruckus / statistics.sql
Created June 5, 2013 23:26
Postgres statistics queries
** Find commmonly accessed tables and their use of indexes:
SELECT relname,seq_tup_read,idx_tup_fetch,cast(idx_tup_fetch AS numeric) / (idx_tup_fetch + seq_tup_read) AS idx_tup_pct FROM pg_stat_user_tables WHERE (idx_tup_fetch + seq_tup_read)>0 ORDER BY idx_tup_pct;
Returns output like:
relname | seq_tup_read | idx_tup_fetch | idx_tup_pct
----------------------+--------------+---------------+------------------------
schema_migrations | 817 | 0 | 0.00000000000000000000
user_device_photos | 349 | 0 | 0.00000000000000000000
$(document).ready(function(){
// Add the class submit to your 'submit' button :)
$(".submit").on('click', function(){
editor.post();
});
});
@mateuszwenus
mateuszwenus / save_restore_dependencies.sql
Last active June 21, 2024 14:19
PostgreSQL: How to handle table and view dependencies
create table deps_saved_ddl
(
deps_id serial primary key,
deps_view_schema varchar(255),
deps_view_name varchar(255),
deps_ddl_to_run text
);
create or replace function deps_save_and_drop_dependencies(p_view_schema varchar, p_view_name varchar) returns void as
$$