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Comparing Two Fields in SQL
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SQL Server compare results of two queries that should be identic…
https://stackoverflow.com/questions/11017678/sql-server-compare-results-of-two-queries-that-should-be-identical
How do I compare two columns for equality in SQL Server? - Stac…
https://stackoverflow.com/questions/1632792/how-do-i-compare-two-columns-for-equality-in-sql-server
sql server - Como fazer select comparando duas colunas - Stack …
https://pt.stackoverflow.com/questions/356492/como-fazer-select-comparando-duas-colunas
To compare if two fields have the same content in SQL, you can use the CASE statement or the IIF function. These methods allow you to check for equality and return a specific result based on the comparison.
Using CASE Statement
The CASE statement is a versatile way to compare two fields and return a result based on the comparison.
SELECT
CASE
WHEN Column1 = Column2 THEN 'Equal'
ELSE 'Not Equal'
END AS ComparisonResult
FROM TableName;
Using IIF Function
The IIF function is a more concise way to perform the same comparison, available in SQL Server 2012 and later.
SELECT
IIF(Column1 = Column2, 'Equal', 'Not Equal') AS ComparisonResult
FROM TableName;
Example
Consider a table named Employees with columns FirstName and LastName. To compare these columns:
SELECT
FirstName,
LastName,
CASE
WHEN FirstName = LastName THEN 'Equal'
ELSE 'Not Equal'
END AS ComparisonResult
FROM Employees;
This query will return whether the FirstName and LastName of each employee are equal or not.
Important Considerations
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Compare values of two columns then select the larger value
You can use CASE, but if one of the values is 'null', the 'null' is considered the greatest value. To solve this problem you can use GREATEST SELECT GREATEST(column3, column4) FROM Table1
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In T-SQL the IF command is for programatic control. For example: IF x THEN doSQLStatement1 ELSE doSQLStatement2 Within a SQL statement, you need C...
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Try this code: SELECT column1, column2, (CASE WHEN column3 > column4 THEN column3 ELSE column4 END) FROM Table1 Result: COLUMN1 COLUMN2 Hybr...
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You can use CASE , but if one of the values is 'null', the 'null' is considered the greatest value. To solve this problem you can use GREATEST SELE...
4
I would start by creating a view. CREATE VIEW t_c SELECT id, c1 AS c FROM t UNION SELECT id, c2 AS c FROM t; Then I would select from that view. S...
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Just so we don't return null: SELECT IIF( a > b, a, COALESCE( a, b )) -- coalesce or isnull FROM wherever Here's a query to test it: with whatever...
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select column1, coloumn2, case when column3 < column4 then column4 else coloum3 end from table.
SQL Comparing values in two rows Aug 2, 2014
How do I compare two columns for equality in SQL Server?
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https://www.geeksforgeeks.org › how-to-compare-two...
How to Compare Two Columns For Equality in SQL …
Mar 31, 2023 · In SQL, problems require us to compare two columns for equality to achieve certain desired results. This can be achieved through the use of the =(equal to) operator between 2 columns names to be compared.
w3resource
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SQL Comparison operator - w3resource
Comparison Operator
SQL Equal to ( = ) Operator
SQL Greater Than ( > ) Operator
SQL Less Than ( < ) Operator
SQL Greater Than Or Equal to ( >= ) Operator
SQL Less Than Or Equal to ( <= ) Operator
SQL Not Equal to ( <> ) Operator
A comparison (or relational) operator is a mathematical symbol which is used to compare two values. Comparison operators are used in conditions that compares one expression with another. The result of a comparison can be TRUE, FALSE, or UNKNOWN (an operator that has one or two NULL expressions returns UNKNO…
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Question & Answer
Stack Overflow
Question
How do I compare two columns for equality in SQL Server?
I have two columns that are joined together on certain crite…
Answer · 96 votes
What's wrong with CASE for this? In order to see …
Stack Overflow
Question
SQL Server compare results of two queries that should be identical.
I am modifying a sql server 2005 stored procedure …
Answer · 70 votes
you can use the except construct to match betw…
Stack Overflow
Question
SQL on how to simultaneously compare two column values in a query.
I need create a query to find the names …
Answer · 1 votes
You will need to do a self join. See this example a…
Stack Overflow
Question
Compare values of two columns then select the larger value.
I need to query a table and select 3 of the values of 4 colum…
Answer · 48 votes
In T-SQL the IF command is for programatic contro…
Stack Overflow
Question
Comparing two variables in SQL.
Lets say you have the next code: DECLARE @A INT = 1, @B INT = NULL; IF (@B != @A) S…
Answer · 10 votes
You cannot compare null with other values. You n…
Stack Overflow
Question
SQL Comparing values in two rows.
I have the following data of sales for various categories of items: category year sal…
Answer · 17 votes
SELECT a.category, CASE WHEN a.salesVo…
SQL Tutorial
https://www.sqltutorial.org › sql-comparison-operators
SQL Comparison Operators - SQL Tutorial
The SQL comparison operators allow you to test if two expressions are the same. The following table illustrates the comparison operators in SQL: The result of a comparison operator has one of three value true, false, and unknown. The …
SQL Server Tips
https://www.mssqltips.com › sqlservertip › sql...
SQL Comparison Operators Examples and Sample Code
Jun 9, 2023 · SQL Comparison Operators are reserved words used in SQL statement clauses that compare two values. They are represented by mathematical symbols (=, >, <) and an …
GeeksForGeeks
https://www.geeksforgeeks.org › comparison-operators...
SQL Comparison Operators - GeeksforGeeks
Jun 6, 2024 · SQL Comparison Operators are used to compare two values and check if they meet the specific criteria. Some comparison operators are = Equal to, > Greater than, < Less than, etc. Comparison Operators in SQL. The below …
People also ask
How to compare two columns for equality in SQL Server?
In SQL, problems require us to compare two columns for equality to achieve certain desired results. This can be achieved through the use of the = (equal to) operator between 2 columns names to be compared. For this article, we will be using the Microsoft SQL Server as our database. Syntax: There is a table called COLLEGE.
How to Compare Two Columns For Equality in SQL Server?
geeksforgeeks.org
What are SQL comparison operators?
Summary: in this tutorial, you will learn about SQL comparison operators and how to use them to form conditions for filtering data. The SQL comparison operators allow you to test if two expressions are the same. The following table illustrates the comparison operators in SQL:
SQL Comparison Operators - SQL Tutorial
sqltutorial.org
How do I compare columns from the same table in SQL?
To compare values in two columns of the same table in SQL, SQL uses self-join. Your join condition should include:
SQL on how to simultaneously compare two column values in a query
stackoverflow.com
How to compare two SQL queries?
EXCEPT is the key to compare two querys (as @jabs said). Adding count(*) for each query to make sure both have the same results. Just in case there are some repeated rows which are deleted by except. The stored proc below will compare the output resultset of 2 stored procedures, or 2 statements.
SQL Server compare results of two queries that should be identical
stackoverflow.com
How to get a comparison between two numbers from a dual table?
Example: SQL Comparison operator To get a comparison between two numbers from the DUAL table, the following SQL statement can be used : Explanation: SELECT: This keyword is used to retrieve data from a database. 15>14: This is a boolean expression that evaluates to true (1 in SQL) because 15 is greater than 14.
SQL Comparison operator - w3resource
w3resource.com
What are SQL comparison operators & Boolean operators?
SQL comparison operators also knows as relational or boolean operators, are used to compare values in a database and find if they are equal to (=), not equal to (!=,<>) greater than (>), less than (<), less than or equal to (<=) and greater than or equal to (>=). They are used inside the WHERE clause. A Computer Science portal for geeks.
SQL Comparison Operators - GeeksforGeeks
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The Curious Consultant
https://cc.davelozinski.com › sql › sql-fastest-way-to...
SQL: Fastest way to compare multiple column values
Mar 3, 2015 · Pay particular attention to all the comparisons that were being performed: MERGE [dbo]. [The_Table] USING ( SELECT [Account_No], -- rest of columns here FROM [#The_TableStaging] ) b -- the primary keys on the table …
SQL Tutorial
https://www.sqltutorial.org › sql-comparison-functions
SQL Comparison Functions - SQL Tutorial
This section provides you with the SQL comparison functions including COALESCE, DECODE, and NULLIF.
GeeksForGeeks
https://www.geeksforgeeks.org › compare-sql-server...
Compare SQL Server Results of Two Queries
Jul 19, 2021 · By using UNION, UNION ALL, EXCEPT, and INTERSECT, we can compare two queries and get the necessary output as per our requirement. Given examples are simple to follow, we can have complex queries and can apply …
Stack Overflow
https://stackoverflow.com › questions
SQL Server compare results of two queries that should be identical
Jun 13, 2012 · EXCEPT is the key to compare two querys (as @jabs said). SELECT count(*), * FROM "query 1 here" EXCEPT SELECT count(*), * FROM "query 2 here" Adding count(*) for …
SQL Server Tips
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Ways to compare and find differences for SQL Server tables and …
Oct 21, 2021 · SQL Server Data Tools allows to compare schemas of two different tables using the SQL Server Database Project. It can generate scripts that will allow you to synchronize …
sequel.sh
https://sequel.sh › docs › comparison-operators
SQL Comparison Operators: Complete Guide with Examples
Master SQL comparison operators with our comprehensive guide. Learn how to use =, <>, >, <, >=, and <= in your queries. Packed with practical examples for filtering and comparing data …
asaqeni.com
https://asaqeni.com › learn › sql › comparison-operators
SQL Comparison Operators: A detailed guide - Asaqeni
The six primary comparison operators in SQL are: Equal (=): Checks if two values are identical. Not Equal (!=): Identifies values different from another value. Greater Than (>): Selects values …
sqlforgeeks.com
https://www.sqlforgeeks.com › sql-comparison
SQL Comparison operators - SQL for Geeks
SQL comparison operators can be used to compare values and filer the data. Overview of SQL comparison operators : • Equal to = • Not equal to <> or != • Greater than > • Less than < • …
Coginiti
https://www.coginiti.co › tutorials › beginner › sql-comparison-operators
What are the SQL Comparison Operators? - Coginiti
Comparison Operators, sometimes referred to as relational or boolean operators, compare values in a database and determine if they are equal (=), not equal (!=, <>), greater than (>), less than …
Stack Overflow
https://stackoverflow.com › questions
t sql - Comparing two variables in SQL - Stack Overflow
Aug 12, 2015 · You can easily compare variables using INTERSECT as it is NULL-sensitive: DECLARE @A BIT = NULL ,@B BIT = 1; IF EXISTS ( SELECT @A INTERSECT SELECT …
IBM
https://www.ibm.com › docs › en
Value comparisons in Db2 XQuery - IBM
Special values: For xs:float and xs:double values, positive zero and negative zero compare equal. INF equals INF, and -INF equals -INF. NaN does not equal itself. Positive infinity is greater …
Tricentis
https://www.tricentis.com › learn › sql-between...
SQL BETWEEN function: A guide with examples - tricentis.com
Mar 11, 2025 · Dive into this guide to unravel the power of the SQL BETWEEN function and supercharge your SQL queries. Understanding the SQL BETWEEN function. Identifying the …
Stack Overflow
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SQL on how to simultaneously compare two column values in a …
Mar 5, 2015 · To compare columns from the same table SQL uses self-join. Your join condition should include: select e1.driver_ssn, e1.exam_type, e1.exam_score as score_before, …
GeeksForGeeks
https://www.geeksforgeeks.org › how-to-compare...
How to compare columns in two different tables in SQL
Apr 28, 2022 · Here we are going to see how we can compare the columns of two different tables in SQL. We will be taking a few examples to see how we can do this in different ways. In this, …
Devart Blog
https://blog.devart.com › sql-interview-questions-and-answers.html
Top 100 SQL Interview Questions and Answers in 2025
Mar 31, 2025 · SQL window functions power advanced analytics without collapsing result sets. Master these: RANK() – Rank employees by salary. LEAD() – Fetch next row value. LAG() – …
Stack Overflow
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Compare Tables in SQL with Expected differences
1 day ago · We want to compare 2 large Tables (100M rows) in SQL Server. Number of rows must be the same. We expect column value differences due to a logic change while populating the …
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SQL Comparing values in two rows	Aug 2, 2014
How do I compare two columns for equality in SQL Server?

SQL Server compare results of two queries that should be identic…

https://stackoverflow.com/questions/11017678/sql-server-compare-results-of-two-queries-that-should-be-identical

How do I compare two columns for equality in SQL Server? - Stac…

https://stackoverflow.com/questions/1632792/how-do-i-compare-two-columns-for-equality-in-sql-server

sql server - Como fazer select comparando duas colunas - Stack …

https://pt.stackoverflow.com/questions/356492/como-fazer-select-comparando-duas-colunas

See results from:

How to Compare Two Columns For Equality in SQL Server?

SQL Comparison Operators - SQL Tutorial

SQL on how to simultaneously compare two column values in a query

SQL Server compare results of two queries that should be identical

SQL Comparison operator - w3resource

SQL Comparison Operators - GeeksforGeeks

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