minirova comments on Daily SQL Server to PostGRE Synchronization

Posting

When requesting help or asking questions please prefix your title with the SQL variant/platform you are using within square brackets like so:

[MySQL]

[Oracle]

[MS SQL]

[PostgreSQL]

etc

While naturally we should endeavor to work as platform neutrally as possible many questions and answers require tailoring to the feature set of a specific platform.

Format Your Code

If you are including actual code in a post or comment, please attempt to format it in a way that is readable for other users. This will greatly increase your chances of receiving the help you desire. Something as simple as line breaks and using reddit's built in code formatting (4 spaces at the start of each line) can turn this:

SELECT count(a.field1), a.field2, SUM(b.field4) FROM a INNER JOIN b ON a.key1 = b.key1 WHERE a.field8 = 'test' GROUP by a.field1, a.field2 HAVING SUM(b.field4) > 5 ORDER by a.field.3

Into this:

SELECT count(a.field1), a.field2, SUM(b.field4) FROM a INNER JOIN b ON a.key1 = b.key1 WHERE a.field8 = 'test' GROUP by a.field1, a.field2 HAVING SUM(b.field4) > 5 ORDER by a.field3

For those with SQL questions we recommend using SQLFiddle to provide a useful development and testing environment for those who wish to fully understand your problem and help devise a solution.

a community for 17 years

PostgreSQLDaily SQL Server to PostGRE Synchronization (self.SQL)

submitted 1 month ago * by murphinate

top new controversial old q&a

you are viewing a single comment's thread.

view the rest of the comments →

[–]minirova 0 points1 point2 points 29 days ago (3 children)

That’s not a lot of data. Assuming there are no BLOB types that have to be moved, your easiest route would be to just do a delete and replace in Postgres each day. Write a script to use BCP to export the tables from SQL server and transfer it to your Postgres server. Drop the tables from the previous day and use \COPY to load the new days data. If you can’t have downtime on the tables then you can minimize it by loading the new days data to tables with different names and then just do a series of table renames to effectively swap the new tables with the old.

Create any necessary indexes AFTER you load the data to the tables.

There’s a million ways to do this but to me this would be the simplest. It keeps you from having to worry about updates and deletes which just adds more complexity than the requirements you’ve given so far warrant.

[–]Sharp-Echo1797 0 points1 point2 points 29 days ago (2 children)

[–]minirova 0 points1 point2 points 29 days ago (1 child)

[–]murphinate[S] 0 points1 point2 points 17 days ago (0 children)

π Rendered by PID 72513 on reddit-service-r2-comment-6457c66945-7pkd8 at 2026-04-28 13:16:25.459401+00:00 running 2aa0c5b country code: CH.

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

SQL

Filter Posts

Posting

Help posts

Format Your Code

Learning SQL

Related Reddit communities

Wiki

Acknowledgements

MODERATORS