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Difference between Fact table and Dimension table?
When reading a book for business objects, I came across the term- fact table and dimension table.
9 Answers
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Fast way to discover the row count of a table in PostgreSQL
I need to know the number of rows in a table to calculate a percentage. If the total count is greater than some predefined constant, I will use the constant value. Otherwise, I will use the actual number of rows.
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How to force table cell content to wrap?
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Use table-layout:fixed in the table and word-wrap:break-word in the td.
See this example:
<html>
<head>
<style>
table {border-collapse:collapse; table-layout:fixed; width:310px;}
table td {border:soli...
Populate data table from data reader
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You can load a DataTable directly from a data reader using the Load() method that accepts an IDataReader.
var dataReader = cmd.ExecuteReader();
var dataTable = new DataTable();
dataTable.Load(dataReader);
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How do I UPDATE from a SELECT in SQL Server?
In SQL Server , it is possible to insert rows into a table with an INSERT.. SELECT statement:
35 Answers
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MySQL Error 1215: Cannot add foreign key constraint
... the keys I'm trying to use as a foreign key are primary keys in their own tables. I have done both of these things, if I'm not mistaken. Any other help you guys could offer?
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How do I drop table variables in SQL-Server? Should I even do this?
I have a table variable in a script (not a stored procedure). Two questions:
6 Answers
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Find all tables containing column with specified name - MS SQL Server
Is it possible to query for table names which contain columns being
29 Answers
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How big is too big for a PostgreSQL table?
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Rows per a table won't be an issue on it's own.
So roughly speaking 1 million rows a day for 90 days is 90 million rows. I see no reason Postgres can't deal with that, without knowing all the details of what you are doing.
Depending o...
Can table columns with a Foreign Key be NULL?
I have a table which has several ID columns to other tables.
7 Answers
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