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Count, size, length…too many choices in Ruby?
...e will generate a query that requests all of the items from the database ('select * from mytable') and then give you the number of items resulting, whereas .count will generate a single query ('select count(*) from mytable') which is considerably faster.
Because these ORMs are so prevalent I follow...
Connect Java to a MySQL database
...Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT ID FROM USERS");
...
rs.close();
stmt.close();
conn.close();
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How can a LEFT OUTER JOIN return more records than exist in the left table?
...FT table, then you have no need to perform a JOIN at all and can just do a SELECT directly from the LEFT table.
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“File not found” when running new LibGDX project
...s using Android Studio or IntelliJ IDEA, you need to follow these steps:
Select Run -> Edit Configurations from the menu
In the "Working Directory:" text box, append "/android/assets" to the path.
Note that if you execute tasks with gradle, this is not an issue. The gradle.build files are con...
MySQL 'create schema' and 'create database' - Is there any difference
...asn't been allocated to any particular schema, you can do something like:
SELECT *
FROM your_table
which is equivalent to:
SELECT *
FROM dbo.your_table
Now, SQL server allows the creation of different schema, which gives you the possibility of grouping tables that share a similar purpose. That...
Algorithm to implement a word cloud like Wordle
...ou color and size words based on different weightings and it supports word selection (from a coordinate) and selected word highlighting. The source is yours to use as you see fit.
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AWS: How to disable all services?
...console.aws.amazon.com/rds/home?region=us-east-1
Go to topright of page. Select the correct server location
The rest is straightforward from here
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Stop an input field in a form from being submitted
...act with them at all- so if you have a disabled text field, the user can't select the text. If you have a disabled checkbox, the user can't change its state.
You could also write some javascript to fire on form submission to remove the fields you don't want to submit.
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Reset AutoIncrement in SQL Server after Delete
... a column(column_name) from a table(table1), you can use following query
SELECT MAX(column_name) FROM table1
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Git undo local branch delete
...
git reflog show
This will display all the Commit history, you need to select the sha-1 that has the last commit that you want to get back
2: create a branch name with the Sha-1 ID you selected eg: 8c87714
git branch your-branch-name 8c87714
...