This week we start talking about common schema by Shlomi Noach. Ear Candy is some caveats about GTIDs and replication, and At the Movies is using jQuery, AJAX and PHP to insert data into MySQL.
News
In the news, the OurSQL podcast will change to a monthly format after episode 200. We love doing the podcast, but it is very time consuming and production is expensive. We will still bring quality episodes, they will just be spaced further apart.
Common Schema
Common SchemaGoogle Code page
Installation sectionof the common schema documentation.
Process Routines- stored routines managing query, session and process information & workflowsession_unique_id()query_latptime()query_runtime()this_query()throttle()- some good examples hereGeneral Routines- stored routines mostly dealing with checksumscrc()- returns a crc checksum of the data givenquery_checksum()- return a checksum of the results of the query specifiedrandom_hash()shorttime_to_seconds- converts human readable "short times" like 1h, 45m, and so on to a number of secondsQuery Analysis Routines- takes in the name of a schema and an object (event, routine, SQL statement or view) and returns a summary of the objects the given object involves, the type and schema for each dependent objectget_event_dependencies()- for eventsget_routine_dependencies()- for stored functions and stored proceduresget_sql_dependencies()- for SQL statementsget_view_dependencies()- for viewsExample of get_routine_dependencies():
CALL common_schema.get_routine_dependencies( 'common_schema', 'get_routine_dependencies');
+-------------+--------------------+-----------+------+
| schema_name | object_name | object_type | action |
+-------------+--------------------+-----------+------+
| common_schema | get_sql_dependencies | procedure | call |
| mysql | proc | table | select |
+-------------+--------------------+-----------+------+
2 rows in set (0.07 sec)
Schema Analysis Routinestable_exists()table_rotate()- rotate a table in logrotate formatSecurity Routinesduplicate_grantee()- create a new user with the same privileges as an existing usergrant_access()- grant SELECT and EXECUTE on common_schema items to the user listedmatch_grantee()- match a specified user@host with an entry in the mysql.user table
For example, from PROCESSLIST:
SELECT id, common_schema.mysql_grantee(user, host) FROM information_schema.processlist;mysql_grantee()- return a qualified, valid mysql user from the information givenkillall()security_audit()- find unsecure accountsDate and Time Routinesstart_of_hour()start_of_week()start_of_week_sunday()start_of_month()start_of_quarter()start_of_year()is_datetime()easter_day()Charting Routinesline_chart()google_line_chart()Common Schema risks
Ear Candy
In this week's ear candy we discussreplication challenges with GTIDs.
At the movies
This week in at the movies, we present a video on how toInsert Data Into MySQL Database using jQuery + AJAX + PHP
Where you can see us
Sheeri will be at theJuly Boston MySQL User Groupon Monday, July 14th, where we'll have David Berube talking about "Improving Your Database Designs with Practical Database Theory"..
Gerry will be at theJuly Seattle MySQL User Groupon Monday, July 14th.
Sheeri will be attending theTDWI Executive Summitin Boston from Sunday July 20th through Wednesday July 23rd.
Gerry will be attendingOSCon 2014from Sunday July 20th through Thursday July 24th.
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