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I have two tables. Customers and Employees and I want a query that displays all customers and employees who live in California.
How would I go about doing that?
Take a look at the UNION https://www.w3schools.com/sql/sql_union.asp. Be aware that when SELECT-ing both have to have selected the same amount of columns.
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How can I write the number of active and passive people from the staff table using view
I want to write to MsSql code.
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If I am standing in database A and what to select from database B by using:
B.table.column
Is this going to slow things down compared to if the table was in databse A where I am standing?
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I would like to know how many users register every day.
But i don't have any idea how to make that.
You can find below the table.
You use group by, assuming that "register" is defined by the created_at column:
select created_at::date, count(*) as num_created_users
from users
group by created_at::date;
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there is any simple way to know which one of two SQL Store procedure works better?
Click the Include Actual Execution Plan before running both sp (on the same run) and check the percentages
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I'm using SQL Server DB and I would like to write query which will look for a fields with two or more slashes in it, lets say we have these rows:
1. abc/def/g
2. abcd/efg
3. a/b/c/d/e/f/g
So it should return 1st and 3rd row! What is the easiest way to do so?
Thanks in advance!