Show not nullable columns in Layout

General issues about DbSchema
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svelazquez
Posts: 1
Joined: Tue May 08, 2018 9:56 pm

Show not nullable columns in Layout

Post by svelazquez » Tue May 08, 2018 10:00 pm

I know you can see what columns are not nullable by hovering over the column but i would like to export the image and identify the columns that are not nullable. Is this possible?

Thanks!

-Sal

Rolandcharcker
Posts: 1
Joined: Sat Dec 22, 2018 6:08 am
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Re: Show not nullable columns in Layout

Post by Rolandcharcker » Sat Dec 22, 2018 6:17 am

NULL values in Cloud Spanner are very cheap, essentially free.
The number of columns per table is limited to 1024. It is also recommended to put less than 4G of data per single parent key. See the full list of limitations here.
The parent-child join itself is efficient in that it executes as a single scan. However, it is hard to tell before knowing actual queries that you would like to execute.

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