Trending questions in Database

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How can I confirm a database is Oracle & what version it is using SQL?

Run this SQL: select * from v$version; Output: BANNER ---------------------------------------------------------------- Oracle Database ...READ MORE

Sep 12, 2022 in Database by narikkadan
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What's the difference between VARCHAR and CHAR?

Any Unicode data can be stored in ...READ MORE

Sep 12, 2022 in Database by narikkadan
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How can I add the sqlite3 module to Python?

Can someone please explain how to install ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
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How to convert date into timestamp in SQL query?

I'm attempting to move data from the ...READ MORE

Aug 19, 2022 in Database by Kithuzzz
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Comparing Dates in Oracle SQL

I'm attempting to get it to show ...READ MORE

Aug 9, 2022 in Database by Kithuzzz
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Vendor code 17002 to connect to SQLDeveloper

When using SQLDeveloper to connect to a ...READ MORE

Sep 2, 2022 in Database by Kithuzzz
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What is wrong with my SQL here? #1089 - Incorrect prefix key

CREATE TABLE `table`.`users` ( ...READ MORE

Sep 3, 2022 in Database by Kithuzzz
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UPDATE and REPLACE part of a string

A table I have has two columns: ...READ MORE

Aug 28, 2022 in Database by Kithuzzz
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How do you create a yes/no boolean field in SQL server?

How should a yes/no, or boolean, field ...READ MORE

Sep 5, 2022 in Database by Kithuzzz
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SQL Server WITH statement

I'm going to guess because I don't ...READ MORE

Sep 10, 2022 in Database by narikkadan
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How to fetch the nth highest salary from a table without using TOP and sub-query?

I was recently requested to create a ...READ MORE

Aug 25, 2022 in Database by Kithuzzz
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Add primary key to existing table

You have to drop constraint and recreate ...READ MORE

Sep 12, 2022 in Database by narikkadan
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How to find sum of multiple columns in a table in SQL Server 2005?

I have a table Emp which has these rows: Emp_cd ...READ MORE

Aug 19, 2022 in Database by Kithuzzz
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Efficiently convert rows to columns in sql server

I need to deal with a lot ...READ MORE

Sep 3, 2022 in Database by Kithuzzz
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When to use "ON UPDATE CASCADE"

I frequently use ON DELETE CASCADE, but ...READ MORE

Aug 25, 2022 in Database by Kithuzzz
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SQL Server® 2016, 2017 and 2019 Express full download

Previous versions of SQL Server Express were ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
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How to download excel in response from api react.js

Create ReactJS project import React, { Component } ...READ MORE

Mar 31, 2022 in Database by gaurav
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How to rename a table in SQL Server?

The SQL query that I have used is : ALTER ...READ MORE

Sep 5, 2022 in Database by Kithuzzz
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com.microsoft.sqlserver.jdbc.SQLServerDriver not found error

I'm having the same issue as this thread. ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
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Get list of databases from SQL Server

Execute: SELECT name FROM master.sys.databases I hope this helps ...READ MORE

Sep 10, 2022 in Database by narikkadan
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Find max and second max salary for a employee table MySQL

Assume you are given the following straightforward ...READ MORE

Aug 26, 2022 in Database by Kithuzzz
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How to display two digits after decimal point in SQL Server?

I want to return the value of ...READ MORE

Aug 26, 2022 in Database by Kithuzzz
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SQL update query using joins

A value that is returned from a ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
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How to create a table from select query result in SQL Server 2008

I tried to build a table from ...READ MORE

Sep 2, 2022 in Database by Kithuzzz
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How to generate a Guid in SQL Server?

I have to make a SQL Id ...READ MORE

Sep 5, 2022 in Database by Kithuzzz
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SQL Server database restore error: specified cast is not valid. (SqlManagerUI)

For my production website, SQL Server 2008 ...READ MORE

Aug 20, 2022 in Database by Kithuzzz
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SQL Server : Arithmetic overflow error converting expression to data type int

I'm getting this error: msg 8115, level 16, ...READ MORE

Aug 26, 2022 in Database by Kithuzzz
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Select data from date range between two dates

I have a database called Product Sales ...READ MORE

Sep 2, 2022 in Database by Kithuzzz
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Return date as ddmmyyyy in SQL Server

I require the date in the format ...READ MORE

Aug 23, 2022 in Database by Kithuzzz
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How to concat two columns into one with the existing column name in mysql?

Using MySQL, I want to combine two ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
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Check if table exists and if it doesn't exist, create it in SQL Server 2008

I'm using SQL Server 2008 to create ...READ MORE

Sep 2, 2022 in Database by Kithuzzz
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Unable to connect to SQL Express "Error: 26-Error Locating Server/Instance Specified)

I am at a loss with one ...READ MORE

Aug 19, 2022 in Database by Kithuzzz
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HAVING without GROUP BY

Does the following make sense in terms ...READ MORE

Aug 21, 2022 in Database by Kithuzzz
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SQL Server PRINT SELECT (Print a select query result)?

I want to print a particular value; ...READ MORE

Aug 9, 2022 in Database by Kithuzzz
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Select rows with same id but different value in another column

I've read numerous threads and tried for ...READ MORE

Aug 12, 2022 in Database by Kithuzzz
 • 38,020 points • 1,616 views
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SQL Server: Invalid Column Name

I am in the process of changing ...READ MORE

Aug 19, 2022 in Database by Kithuzzz
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Convert timestamp to date in Oracle SQL

How can we convert timestamp to date? READ MORE

Aug 29, 2022 in Database by Kithuzzz
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How do I view the Explain Plan in Oracle Sql developer?

I want to check the query execution ...READ MORE

Aug 19, 2022 in Database by Kithuzzz
 • 38,020 points • 1,284 views
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Using If else in SQL Select statement

In my select statement, two columns will ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,020 points • 501 views
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"CASE" statement within "WHERE" clause in SQL Server 2008

The query I'm working with has a ...READ MORE

Sep 3, 2022 in Database by Kithuzzz
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?

In one ALTER TABLE statement, I would ...READ MORE

Sep 2, 2022 in Database by Kithuzzz
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SQLite in Android How to update a specific row

For a time now, I've been attempting ...READ MORE

Aug 11, 2022 in Database by Kithuzzz
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SQL Update from One Table to Another Based on a ID Match

Account and credit card numbers are stored ...READ MORE

Aug 22, 2022 in Database by Kithuzzz
 • 38,020 points • 1,131 views
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How to return only the Date from a SQL Server DateTime datatype

SELECT GETDATE() Returns: 2008-09-22 15:24:13.790 I want that date part ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,020 points • 479 views
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Use '=' or LIKE to compare strings in SQL?

There is a (nearly religious) debate over ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,020 points • 469 views
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How to get current datetime in SQL?

In order to add the current date ...READ MORE

Aug 30, 2022 in Database by Kithuzzz
 • 38,020 points • 760 views
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Add Foreign Key to existing table

I want to add a Foreign Key ...READ MORE

Sep 3, 2022 in Database by Kithuzzz
 • 38,020 points • 586 views
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What is the Oracle equivalent of SQL Server's IsNull() function?

In SQL Server we can type IsNull() ...READ MORE

Sep 4, 2022 in Database by Kithuzzz
 • 38,020 points • 525 views
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Equivalent of Oracle's RowID in SQL Server

What does SQL Server's RowID resemble in ...READ MORE

Aug 30, 2022 in Database by Kithuzzz
 • 38,020 points • 724 views
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Direct link for downloading Microsoft SQL Server 2008 R2 Express SP2 without clicking any button?

Do you know of a button-free direct ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,020 points • 417 views
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