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What should I name a table that maps two tables together? [closed]
Let's say I have two tables:
24 Answers
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Select random row from a sqlite table
I have a sqlite table with the following schema:
7 Answers
7
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How to add column if not exists on PostgreSQL?
Question is simple. How to add column x to table y , but only when x column doesn't exist ? I found only solution here how to check if column exists.
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Can you create nested WITH clauses for Common Table Expressions?
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While not strictly nested, you can use common table expressions to reuse previous queries in subsequent ones.
To do this, the form of the statement you are looking for would be
WITH x AS
(
SELECT * FROM MyTable
),
y AS
(
SELECT * FROM x
)
SELECT * FROM y
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Avoid duplicates in INSERT INTO SELECT query in SQL Server
I have the following two tables:
8 Answers
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PHP: exceptions vs errors?
... ul.code li.line {
color : red;
}
table.trace {
width : 100%;
border-collapse : collapse;
border : solid 1px black;
}
table.thead tr {
background : rgb(240,240,240);
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Does order of where clauses matter in SQL?
Let's say I have a table called PEOPLE having 3 columns ID, LastName, FirstName , none of these columns are indexed.
LastName is more unique, and FirstName is less unique.
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SQL select join: is it possible to prefix all columns as 'prefix.*'?
I'm wondering if this is possible in SQL. Say you have two tables A and B, and you do a select on table A and join on table B:
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Storing time-series data, relational or non?
... clause, it is very fast, and the query does not depend on the size of the table (grabbing 1,000 rows from a 16 billion row table is instantaneous).
Your table has one serious impediment. Given your description, the actual PK is (Device, Metric, DateTime). (Please don't call it TimeStamp, that mea...
What's the difference between deque and list STL containers?
..., it is frequently one of the most important reasons to select the most suitable container for a certain application.
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