Recent posts tagged sql

**Problem:** ======== *I have a City table and I want to query all the cities of Pakistan that have the population larger than 200000 and their names start in H. Country code for Pakistan is Pak. How can I do that using **SQL**?* I want someones' h...

**Problem:** ========= *I am very beginner to **PHP, Jquery**, and ajax, and I am really going through a very hard time while trying to find a solution on a web-based platform that I could use to solve my problem. Currently, I am trying to display t...

**Problem:** ======== Hello, I want someone to help me on : Attributes are not identical across measure variables; they will be dropped Thanks Solution: --------- At the time you melt, you are combining multiple columns into one. In this instan...

**Problem :** ========= I am very new to **SQL** servers. Currently, I am dealing with a column in the **SQL** which should be sometimes **nvarchar** and other cases as numbers. My column has the datatype as **nvarchar.** Now I am just interested in...

There are so many different data types in SQL Server that could be used to store the same type of data. For example, for storing numbers we have Integer, smallInt, bigInt, etc. All of these types are used to store the same type of data and we sometim...

Common Table Expressions Common Table Expressions also are referred to as CTEs. This characteristic turned into delivered with SQL Server 2005. The CTE is favored to apply as an opportunity to a Subquery/View. Sub-queries A sub-question is a qu...

Date class is found in both java.util package and java.sql package. Though the name of the class is the identical for both packages, their utilities are different. Date class of java.util package is needed while records is needed in a java utility to...

Problem: -------- I want to retrieve all the names from a database that ends with ‘a’. I do not know how to do that. Solution: --------- You can do this by using LIKE operator. SQL provides various ways to retrieve specific data. It provides -...

Problem: -------- Hello Kodlogs, I recently started learning programming and I am a little curious about how large enterprise applications are made. I came to know that SQL is used to handle data for large applications. I want to know more about it...

If you are upgrading from SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, or SQL Server 2012, select the second option. In this example, nothing was previously installed. Therefore, select the first option. We recommend that you choose the firs...

If you are upgrading from SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, or SQL Server 2012, select the second option. In this example, nothing was previously installed. Therefore, select the first option. We recommend that you choose the firs...

This command is used to rename a column to a new column. It is also used to change the table name to the new table. Let's see how we can use this command in different databases. However, to understand all of the examples, first look at the following...

1. Whenever installing a new program on Windows 10, you should always make sure you document yourself on whether it is compatible with your OS or not. 2. Sometimes, due to software issues, you will be prompted with an error message stating that the O...

The structured query language is almost the same for MySQL, SQL Server, or other database management systems. Most of the commands are the same and used for the same purpose. In this post, we are going to see the **difference between the truncate and...

This article is going to be very informative for those wanting to learn SQL joins. We will discuss in details what kinds of SQL joins exist and will explain each type with an example and ven diagrams. Let's start. First we need to define the followi...

TRUNCATE, DELETE and DROP commands are used to delete or remove data and tables from a database. Although their function is the same, all of these commands are used for different purposes. In this article, we are going to see the difference between T...

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If you have never assigned a root password to MySQL, the server does not need a password to connect as root. However, this is not safe. For instructions on how to assign a password, see Section 2.10.4, “Initial MySQL Account Security”. If...