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How do you find the row count for all your tables in Postgres
...tatement like the one you used against each table. This is because PostgreSQL keeps row visibility information in the row itself, not anywhere else, so any accurate count can only be relative to some transaction. You're getting a count of what that transaction sees at the point in time when it exe...
Error Code: 2013. Lost connection to MySQL server during query
I got the Error Code: 2013. Lost connection to MySQL server during query error when I tried to add an index to a table using MySQL Workbench.
I noticed also that it appears whenever I run long query.
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Are soft deletes a good idea? [duplicate]
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@Josh: everything in SQL programming is fairly trivial; it's the accumulation of lots of trivial things that starts to cause problems. As I said in my last sentence, I would expect a developer to have a good reason for increasing the complexity o...
Display open transactions in MySQL
...ansactions and commit or cancel them?
There is no open transaction, MySQL will rollback the transaction upon disconnect.
You cannot commit the transaction (IFAIK).
You display threads using
SHOW FULL PROCESSLIST
See: http://dev.mysql.com/doc/refman/5.1/en/thread-information.html
It w...
Multiple DB Contexts in the Same DB and Application in EF 6 and Code First Migrations
...ApplicationDbContext.Configuration
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Applying explicit migrations: [201402032113124_InitialDatabaseCreation].
Applying explicit migration: 201402032113124_InitialDatabaseCreation.
Running Seed method.
PM> ...
How to make join queries using Sequelize on Node.js
... What if I want to join only Users who are born in 1984 ? In SQL I would do : SELECT * FROM posts JOIN users ON users.id = posts.user_id WHERE users.year_birth = 1984
– Iwazaru
Dec 28 '14 at 20:35
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?? Coalesce for empty string?
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@Jimmyt1988 - Because it approximates the standard T-SQL COALESCE function.
– Justin Morgan
Jan 10 '17 at 16:28
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GSON - Date format
...zer works here. However, if you are formatting database entities, use java.sql.Date to register you serializer. Deserializer is not needed.
Gson gson = new GsonBuilder()
.registerTypeAdapter(java.sql.Date.class, ser).create();
This bug report might be related: http://code.google.com/p/google-g...
What is the App_Data folder used for in Visual Studio?
...is essentially a storage point for file-based data stores (as opposed to a SQL server database store for example). Some simple sites make use of it for content stored as XML for example, typically where hosting charges for a DB are expensive.
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Change SQLite database mode to read-write
How can I change an SQLite database from read-only to read-write?
14 Answers
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