Database
Difference between Fact table and Dimension table?
This is to answer the part: I was trying to understand whether dimension tables can be fact table as well or not? The short answer (INMO) is No.That is because the 2 types of tables are created for different reasons. However, from a database design perspective, a dimension table could have a parent table as … Read more
Example of a strong and weak entity types
A weak entity is one that can only exist when owned by another one. For example: a ROOM can only exist in a BUILDING. On the other hand, a TIRE might be considered as a strong entity because it also can exist without being attached to a CAR.
How can I truncate a datetime in SQL Server?
This continues to frequently gather additional votes, even several years later, and so I need to update it for modern versions of Sql Server. For Sql Server 2008 and later, it’s simple: Note that the last three paragraphs near the bottom still apply, and you often need to take a step back and find a … Read more
How to resolve ORA-011033: ORACLE initialization or shutdown in progress
After some googling, I found the advice to do the following, and it worked:
Escape string Python for MySQL
See MySQL C API function mapping: http://mysql-python.sourceforge.net/MySQLdb.html
1052: Column ‘id’ in field list is ambiguous
SQL supports qualifying a column by prefixing the reference with either the full table name: …or a table alias: The table alias is the recommended approach — why type more than you have to? Why Do These Queries Look Different? Secondly, my answers use ANSI-92 JOIN syntax (yours is ANSI-89). While they perform the same, … Read more
Oracle date format picture ends before converting entire input string
Perhaps you should check NLS_DATE_FORMAT and use the date string conforming the format. Or you can use to_date function within the INSERT statement, like the following: Additionally, Oracle DATE stores date and time information together.
How To Run A Github Repository?
If you are a newbie, I think you should learn how to use git. You can refer the link below: https://education.github.com/git-cheat-sheet-education.pdf Basic steps: Clone or download source code from Github. You can download it directly, or use a tool like Git-bash, tortoise git… Run this source code, depending on the language of the source code.
Combining “LIKE” and “IN” for SQL Server
Effectively, the IN statement creates a series of OR statements… so Is effectively And sadly, that is the route you’ll have to take with your LIKE statements