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Sync Fields

bbhank — Mon, 19 Feb 2018 16:27:54 +0000

Looking for plugin or method (even code) to sync selected columns of separate tables in same WP database. Have main locations table that has fields that need to always be same as corresponding fields in main information table. Direction always the same – from main table to locations table.

Sync Fields plugin does not work for this – only syncs certain fields. Need to be able to choose from all fields in selected tables.

Reply To: Sync Fields

RossMitchell — Thu, 22 Feb 2018 03:17:40 +0000

It is a basic principle of database design that you don’t duplicate data that is identical. Difference is information, no difference means no information. And there are always problems when trying to maintain the duplicates.
If the location table always matches the main table, then the info can be fetched using a JOIN.

Reply To: Sync Fields

bbhank — Thu, 22 Feb 2018 05:39:45 +0000

The main table has more fields than the locations table. They are part of two separate systems whose location data is/are the same. The issue is exactly how to get the location data to be the same as the location data of the main table.
Please be specific. Exactly how can a JOIN be used? Please give example(s). When location information is changed in the main table, that change is also needed in the locations table.

Reply To: Sync Fields

RossMitchell — Thu, 22 Feb 2018 13:17:04 +0000

A “JOIN” is a variation to the SQL “SELECT” statement, it lets you construct a synthetic database row that combines fields from multiple tables that match on specified criteria.
More details available here:
https://dev.mysql.com/doc/refman/5.7/en/select.html
https://dev.mysql.com/doc/refman/5.7/en/join.html

If you could list the fields from the main and locations tables that pertain to your question, and also provide say 3 rows of data covering say 2 different locations, and also the SELECT statement you use on the main table, then I will be able to show you how the join works.

Reply To: Sync Fields

bbhank — Fri, 23 Feb 2018 21:07:39 +0000

Thank you.
There is a main table that is a list of businesses with the business address and lots of other information. It looks something like:
ID Name Address City State Zip URL Other Other Other
There is a locations database that uses a locations table that looks like this:
location_id location_label location_address location_city location_state location_postcode location_url
These tables are parts of two separate systems that share the same location data and work in concert with each other. Right now I have to edit both tables as well as the corresponding WordPress page. Needed is to be able to input into the main table and have the changes “automatically” reflected in the locations database.

Reply To: Sync Fields

RossMitchell — Sat, 24 Feb 2018 14:42:47 +0000

Presumably it is business names which are being looked up in the main table to get among other fields the business address. Please describe what is being looked up in the locations table ?

Reply To: Sync Fields

bbhank — Sat, 24 Feb 2018 15:28:55 +0000

See description above.

Reply To: Sync Fields

RossMitchell — Sun, 25 Feb 2018 02:20:01 +0000

You described the fields of the locations table, not how it is looked up. My question was reasonable. You clearly don’t need my assistance.

Bye.

Reply To: Sync Fields

bbhank — Sun, 25 Feb 2018 02:28:38 +0000

You are correct.
Thank you.

Reply To: Sync Fields

bbhank — Mon, 30 Apr 2018 00:02:32 +0000

Looking for plugin that will sync any selected fields in any selected table with any selected fields in any other selected table, in the same database, in either direction, independent of how any other system works with them. The tables that need syncing are part of two separate systems, one written almost totally in java and the other totally in php. The locations table (java) needs to be identical with the locations only, in the main database table. Every time there is a change or addition to the main database, certain location data (fields) for that table needs to be synchronized with the locations table. The locations data is used by a calendar whereas the main data is used as an information database that uses the calendar events but not its locations. This is why the sync is one direction only (main to locations), and only for selected fields used by the calendar locations database.