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Explanation of JSONB introduced by PostgreSQL
PostgreSQL just introduced JSONB and it's already trending on hacker news . It would be great if someone could explain how it's different from Hstore and JSON previously present in PostgreSQL. What are its advantages and limitations and when should someone consider using it?
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What are allowed characters in cookies?
... worked fine with and without the encoded cookie.)
– Sql Surfer
Apr 25 '18 at 17:06
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Unable to update the EntitySet - because it has a DefiningQuery and no element exis
...em (originally flat files on a AS400 ported to Access and then ported to T-SQL). So I had to find a way. This is my solution. The following worked for me using Entity Framework 6.0 (the latest on NuGet as of this writing).
Right-click on your .edmx file in the Solution Explorer. Choose "Open With....
How can I get a resource “Folder” from inside my jar File?
... answered Mar 6 '17 at 18:15
SQL.injectionSQL.injection
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Connection string using Windows Authentication
...ty info=True;
Integrated Security=SSPI;"
providerName="System.Data.SqlClient" />
</connectionStrings>
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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
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When I compared the 2 in the SQL profiler, Find/Load was better for my case (I had 1:1 relation). @Iravanchi: do you mean to say if I had 1:m relation it would have called m times the store?... because would not make so much sense.
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Database sharding vs partitioning
...t and it will be sequential. I did similar on DB for billion + records and sql time came to 50 millis from 30 seconds using indices etc all.
Sharding is that you host each partition on a different node/machine. Now searching inside the partitions/shards can happen in parallel.
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When is SQLiteOpenHelper onCreate() / onUpgrade() run?
I have created my tables in my SQLiteOpenHelper onCreate() but receive
15 Answers
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Replace None with NaN in pandas dataframe
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If you imported data from an SQL database, you can combine this with the answer below. This converts None (which isn't a string) to NaN. Then you can df['column'].replace(nan, "", inplace=True) if say you wanted None to be empty string.
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Reading large text files with streams in C#
... worked well for stripping apart a 19GB postgres file to translate it into sql syntax in multiple files. Thanks postgres guy who never executed my parameters correctly. /sigh
– Damon Drake
May 21 '15 at 16:24
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