you cannot - the number and names and types of columns must be known at parse time, if the aliases (names) change - then you need a new query. To give a column a descriptive name, you can use a column alias. Creating Column Aliases with AS. Most of the queries in the tutorials need Northwind MySQL database, you can download the database script on this page. If you think, it's worth it, then declare @SQL varchar (max) set @SLQ = 'SELECT FiscalYear,count (distinct AccountNumber) Members, Similarly, you can also apply JOINS in your SQL query while you transpose rows to columns dynamically in MySQL. You can use the AS clause to create a column alias. by Philipp Stiefel, ursprünglich veröffentlicht am 04. 1. no, you can't have dynamic views. December 20, 2019 12:24 am. How To Unlock User Accounts in MySQL Server. -- Keyword AS is not used - Not recommended. If you want dynamic column names, the only way is to use Dynamic SQL. New Topic. Developer Zone. The following query uses the column alias in the ORDER BY clause to sort the employee’s full names alphabetically: The following statement selects the orders whose total amount are greater than 60000. Oktober 2016. Using Logical Operators11. Both queries have produced the same result whether the AS keyword is used or not. Use column alias with single quotes (' ') or double quotes (" ") if you need to put spaces or add special characters (such as $, #, @) in the column heading. Query … The second query uses single quotation marks to enclose column alias name - not recommend as single quotes are normally For example, if the column name does not make too much business sense, you can use a meaningful alias instead. You can kludge this thing in a pile of garbage with dynamic SQL, but why? E.g., (this a contrived example but you get the idea) SELECT time, distance, (distance / time) AS speed, (speed / time) AS acceleration FROM data. September 03, 2011 - 11:06 am UTC . First of all, columns in a row in a table are not fields in a record. Sie sind sehr einfach zu erstellen und zu verwenden. registered trademarks of their respective companies. Literal strings are discussed in Using Literal Character Strings section. An SQL column alias is a name that you can give to a column in a query. CREATE PROCEDURE xtab2(col_name VARCHAR(32), col_alias VARCHAR(32), col_from VARCHAR(256), col_value VARCHAR(32),row_name VARCHAR(32), row_from VARCHAR(256)) READS SQL DATA DETERMINISTIC SQL SECURITY INVOKER COMMENT 'Generate dynamic crosstabs - variant with GROUP_CONCAT' BEGIN -- build the query that builds the list of columns for the crosstab registered trademarks of their respective companies. Can we use backticks with column value in MySQL? Column alias is added in the SELECT statement immediately after the column name. We have to careful while using aliases only about the name that we use for specifying the alias. Bei SQL-Datenbank SQL Database wird immer die Sortierung SQL_Latin1_General_CP1_CI_AS verwendet. Can we define a method name same as class name in Java? Why use Alias in SQL? SQL provides the ability to rename columns or to provide column names for literals or expressions returned by a query during its execution. Year: 2006 Pages: 162. There is no need to change the column alias instead give table alias or table name qualified by the column name in the ORDER BY to retrieve the expected output. This function can be used to check if a value in a blob field is a valid dynamic column blob. optional keyword AS before the column alias name. Perform Arithmetic Operations4. We regularly publish useful MySQL tutorials to help web developers and database administrators learn MySQL faster and more effectively. FROM Customers; Try it Yourself ». First of all, columns in a row in a table are not fields in a record. To understand the above syntax, let us create a table. 0 = Content is a document fragment or the column data type is not xml. Also, SQL Server does not provide any built in functionality which can be used in this scenario. You can kludge this thing in a pile of garbage with dynamic SQL, but why? xml_collection_id: int: Nonzero if the data type of the column is xml and the XML is typed. MySQL alias is a variable of table that can be used to access the column name of that particular table. All Rights Reserved. Table aliases have several practical applications. I want to make column alias on dynamic column name in sql server ..... by La La La. ISBN: 0321375734 EAN: 2147483647. To understand the above syntax, let us create a table. Since T-SQL does not support proving variable as column alias in a query, here are two methods to handle that. All MySQL tutorials are practical and easy-to-follow, with SQL script and screenshots available. CompTIA Project+ Study Guide: Exam PK0-003. Sometimes, column names are so technical that make the query’s output very difficult to understand. Using LIKE Comparison Operator10. 3. Foto von veeterzy, hier verwendet unter CC0 licensing. It uses c as a table alias for the customers table and o as a table alias for the orders table. Software and hardware names mentioned on this site are Sorting Data6. my column name stored in another table. First of all, columns in a row in a table are not fields in a record. Can I dynamically assign a column alias. Drop me an email and I will promptly and gladly rectify it. The reason is that when MySQL evaluates the WHERE clause, the values of columns specified in the SELECT clause is not be evaluated yet. MySQL supports two kinds of aliases which are known as column alias and table alias. hence the plsql code demonstrated above. It uses column aliases in GROUP BY and HAVING clauses. Das Schlüsselwort um einen Alias zu erstellen ist AS. But as we know that SQL Server is a robust enterprise database, it facilitates the power of dynamic SQL which can generate and execute T-SQL commands dynamically, this technique can be used to generate and execute dynamic PIVOT query. More About Us. A column has a known name, data type and constraints (these define its domain). Using LIMIT Clause to Constrain the Number of Rows Retrieved7. *)table1_columnname, (table2. Creating Column Aliases with AS. 3. Can enyone tell me if this can be done, and if so, how do I do it. How to pass columns alias names from variables. my column name stored in another table. Documentation Downloads MySQL.com. Software and hardware names mentioned on this site are No competent SQL programmer would try to do this. bulk_column_alias bulk_column_alias. Use WHERE Clause to Conditionally Select Rows5. In einer Anweisung können bis zu 256 Tabellenquellen verwendet werden. Using dynamic SQL. I want to display my dynamic column value in select query. Also, SQL Server does not provide any built in functionality which can be used in this scenario. Same query in a plsql function Srinath, September 02, 2011 - 2:21 pm UTC Tom, I need the same query in a plsql … The Basic SELECT Statement2. For example, I'd like to be able to send a query like: SELECT (table1. Die Spaltenbezeichner in der UNPIVOT-Klausel folgen der Katalogsortierung. The first query uses double quotation marks to enclose column alias name. The query to create a table is as follows − mysql> create table TableAliasDemo −> (−> Id int, −> Name varchar(100), −> Age int −>); Query OK, 0 rows affected (0.46 sec) How To give alias in linq when use with WCF. To solve this, you can assign the column heading of the output a column alias as shown in the following query: SELECT CONCAT_WS ( ', ', lastName, firstname) AS `Full name` FROM employees; Try It Out. Microsoft SQL Server. Allerdings variiert das Limit in Abhängigkeit vom verfügbaren Arbeitsspeicher und der Komplexität ande… Note that both queries have Die Sprache SQL (Structured Query Language) hat eine umfangreiche Syntax und Vokabular. It uses the CONCAT_WS() function to concatenate first name and last name into full name. The following query selects the first names and last names of employees. The column identifiers in the UNPIVOT clause follow the catalog collation. Dynamic Pivot Query To achieve above query result, had to create two column sets, @colalias as column alias names and @col2 as questioncode column which will be aliased as Q1, Q2, Q3 etc. Using Literal Character Strings3. (A column’s default heading in a result is the source column’s name in the table definition.) produced the same result whether single or double quotes are used. You can assign a query as alias.Please try this: DROP VIEW IF EXISTS `MyView`; CREATE OR REPLACE ALGORITHM=UNDEFINED DEFINER=`root`@`%` SQL SECURITY DEFINER VIEW `MyView` AS select `u`.`id` AS `id`,`u`.`name` AS `name`,(select `occupation`.`occupation` AS `occupation` from `occupation` where (`occupation`.`id` = 2)) AS `occupation name` Practice #2: execute SELECT statement with single or double quotes around column alias name. Ein optionaler Alias, der einen Spaltennamen im Resultset ersetzt. Since T-SQL does not support proving variable as column alias in a query, here are two methods to handle that. 1. Same query in a plsql function Srinath, September 02, 2011 - 2:21 pm UTC Tom, I need the same query in a plsql … JOINs are covered in Querying Multiple Tables section. However, if a dynamic column blob is accidentally truncated, or transcoded from one character set to another, it will be corrupted. Note that the SQL needs to end with semi-colon if you have multiple queries in the query window. LINQ query to get the single column value from a datatable . Using SQL Server 2000. hence the plsql code demonstrated above. Similar to column aliases, the AS keyword is optional. DECLARE @colalias AS NVARCHAR( MAX ) , @cols2 AS NVARCHAR( MAX ), @query AS NVARCHAR( MAX ) , @yearno Int = 2014 , @QtrNo Int = 2 Posted by: Michael Murphy Date: August 13, 2010 03:47AM Hi, I am trying top create a view where I want a particular column name to be based on database content rather than a literal. I want to make column alias on dynamic column name in sql server ..... by La La La. Next: combine multiple rows into multiple columns using dynamic Sql. Previous page. on Aug 4, 2017 at 10:41 UTC. No portion may be reproduced without my written permission. This is the recommended way to do it. This is known as creating Alias in SQL.In this guide, we will learn what is an Alias and why it is used in SQL. If you do not use the alias in the query above, you have to use the table name to refer to its columns, which makes the query lengthy and less readable as the following: In this tutorial, you have learned how to use MySQL aliases including column and table aliases. This can happen when joining two or more tables and these tables may use the same column names. Linq query. -- Use single quotes around column alias - Not recommended. CREATE TABLE Foo ( keycol INT PRIMARY KEY, datacol CHAR (1)) INSERT INTO Foo VALUES (1, 'a') INSERT INTO Foo VALUES (2, 'b') DECLARE @column_alias VARCHAR (30) SET @column_alias = 'new_title' -- 1). I have donre an example of what I want to do below, but this is not allowed. The name of the … Unfortunately MySQL doesn’t allow the use of functions to generate column names, and as far as I know it doesn’t have a means out of the box to generate column names dynamically in general (please let me know if I am mistaken; I’m keen to learn something new), but it is definitely possible at least with a trick using prepared statements. Posted by: laptop alias Date: March 26, 2012 12:26PM I think you're confusing data storage with data retrieval … You assign a table an alias by using the AS keyword as the following syntax: The alias for a table is called table alias. is_merge_published: bit: 1 = Column is merge-published. Similar to column aliases, the AS keyword is optional. Notice that you cannot use a column alias in the WHERE clause. You can use the AS clause to create a column alias. Du verwendest das AS -Schlüsselwort, um einen neuen Namen für eine Spalte oder eine Tabelle in deinem SQL-Statement festzulegen. [last pivoted column]) ) AS ; Bemerkungen Remarks. SQL Alias is the alternative name that can be assigned to any of the objects inside the SQL query statement that includes the names of the tables and columns that help in accessing and referring those objects with an alternative and small word that is an alias which makes it easy for specifying. Thanks Dmitrij , can I write dynamics SQL in Views , I want to have dynamics alias in my View , because my views are used by thereporter. Let me show you with an example. 1) Using table aliases for the long table name to make queries more readable. How to defiened user defiend column in EDMX/ lInq queries. 1 = Column has a non-SQL Server subscriber. Functions like COLUMN_CREATE, COLUMN_ADD, COLUMN_DELETE always return valid dynamic column blobs. Can I dynamically assign a column alias. Copyright © 2020 by www.mysqltutorial.org. In the query results so far, I’ve allowed the DBMS to use default values for column headings. MySQL, Second Edition. No competent SQL programmer would try to do this. is_dts_replicated: bit: 1 = Column is replicated by using SSIS. SQL Alias is the alternative name that can be assigned to any of the objects inside the SQL query statement that includes the names of the tables and columns that help in accessing and referring those objects with an alternative and small word that is an alias which makes it easy for specifying. Standard SQL disallows references to column aliases in a WHERE clause. To instruct Oracle to use a column alias, you simply list the column alias next to the column name in the SELECT clause as shown below: SELECT first_name AS forename, last_name AS surname FROM employees; The AS keyword is used to distinguish between the column name and the column alias. This query shows how to assign the employees table alias as e: Once a table is assigned an alias, you can refer to the table columns using the following syntax: The table aliases are often used in the statement that contains INNER JOIN, LEFT JOIN, RIGHT JOIN clauses and in subqueries. In the query results so far, I’ve allowed the DBMS to use default values for column headings. is_xml_document : bit: 1 = Content is a complete XML document. DECLARE @sql NVARCHAR (200) SET @sql = … No portion may be reproduced without my written permission. Copy and paste the following SQL to your SQLyog free Community Edition query window. CREATE TABLE Foo ( keycol INT PRIMARY KEY, datacol CHAR (1)) INSERT INTO Foo VALUES (1, 'a') INSERT INTO Foo VALUES (2, 'b') DECLARE @column_alias VARCHAR (30) SET @column_alias = 'new_title' -- 1). In the first query, we have used The following statement illustrates how to use the column alias: To assign an alias to a column, you use the AS keyword followed by the alias. Next page. If you need a general column name as result, you can add an alias: DECLARE @DynamicSQL VARCHAR(MAX) = ' SELECT DailyValue = P.[Day' + CONVERT(VARCHAR(2), @DayToday) + '] FROM #PivotedInfo AS P ' PRINT (@DynamicSQL) /* SELECT DailyValue = P.[Day3] FROM #PivotedInfo AS P */ You can avoid using dynamic SQL if you unpivot your columns and then filter where the unpivot column … Reply; nalinimahadik7. Use column alias when there is a column name conflict. Let’s look at the employees table in the sample database. Problem in groupby year and month in linq query. SQL provides the ability to rename columns or to provide column names for literals or expressions returned by a query during its execution. A column has a known name, data type and constraints (these define its domain). Posted by: Michael Murphy Date: August 13, 2010 03:47AM Hi, I am trying top create a view where I want a particular column name to be based on database content rather than a literal. Microsoft SQL Server. You can assign a query as alias.Please try this: DROP VIEW IF EXISTS `MyView`; CREATE OR REPLACE ALGORITHM=UNDEFINED DEFINER=`root`@`%` SQL SECURITY DEFINER VIEW `MyView` AS select `u`.`id` AS `id`,`u`.`name` AS `name`,(select `occupation`.`occupation` AS `occupation` from `occupation` where (`occupation`.`id` = 2)) AS `occupation name` Should any right be infringed, it is totally unintentional. Applies to: SQL Server 2008 SQL Server 2008 and later and SQL-Datenbank SQL Database. DECLARE @colalias AS NVARCHAR( MAX ) , @cols2 AS NVARCHAR( MAX ), @query AS NVARCHAR( MAX ) , @yearno Int = 2014 , @QtrNo Int = 2 Use column alias if the original column name does not meet your requirements. If the alias contains spaces, you must quote it as the following: Because the AS keyword is optional, you can omit it in the statement. Can we use INTERVAL keyword while inserting date records in a MySQL table? All Rights Reserved. No competent SQL programmer would try to do this. To reduce the amount of time to query by temporary replacing the complex & long table and column names with simple & short names. download the database script on this page, Use WHERE Clause to Conditionally Select Rows, Using LIMIT Clause to Constrain the Number of Rows Retrieved. 1. Using dynamic SQL. DECLARE @sql NVARCHAR (200) SET @sql = … Is an optional alias to replace a column name in the result set. Use column alias when there is a column name … Let’s look at the customers and orders tables: Both tables have the same column name:customerNumber.Without using the table alias to qualify the customerNumber column, you will get an error message like: To avoid this error, you use table alias to qualify the customerNumber column: The query above selects customer name and the number of orders from the customers and orders tables. A column has a known name, data type and constraints (these define its domain). Consider the following facts when using column alias: Column alias is added in the SELECT statement immediately after the column name. Aliase sind „Ersatznamen“ für die Spalten und Tabellen, die du in deinen SQL-Statements verwendest. – sagar Aug 9 '19 at 7:44. Using Comparison Operators, Part II9. The query to create a table is as follows − mysql> create table TableAliasDemo −> (−> Id int, −> Name varchar(100), −> Age int −>); Query OK, 0 rows affected (0.46 sec) Functions like COLUMN_CREATE, COLUMN_ADD, COLUMN_DELETE always return valid dynamic column blobs. The columns in the customers and orders tables are referred to via the table aliases. However, if a dynamic column blob is accidentally truncated, or transcoded from one character set to another, it will be corrupted. September 03, 2011 - 11:06 am UTC . Authors: Larry Ullman. How can we provide an alias name for an action method in Asp .Net MVC C#? Viele haben schon damit zu kämpfen, die Grundlagen von INSERT, SELECT, UPDATE und DELETE zu lernen. SELECT column alias_name FROM table. Advanced Search. The second query doesn't Use column alias with single quotes (' ') or double quotes (" ") if you need to put spaces or add special characters (such as $, #, @) in the column heading. To solve this, you can assign the column heading of the output a column alias as shown in the following query: In MySQL, you can use the column alias in the ORDER BY, GROUP BY and HAVINGclauses to refer to the column. SQL SELECT AS is used to assign temporary names to table or column name or both. No competent SQL programmer would try to do this. alias name in sql for columns. Note how the speed alias is used in the definition of acceleration alias but this doesn't seem to work. on Aug 4, 2017 at 10:41 UTC. I want to display my dynamic column value in select query. used to enclose character strings. Read Prerequisites for this tutorial and practices if you haven't done so. Dynamic Pivot Query To achieve above query result, had to create two column sets, @colalias as column alias names and @col2 as questioncode column which will be aliased as Q1, Q2, Q3 etc. You can kludge this thing in a pile of garbage with dynamic SQL, but why? MySQLTutorial.org is a website dedicated to MySQL database. One of the most common ways to use it is in a SELECT query. Here’s an example of pivot table created using Ubiq. Default in MySQL s an example of what I want to do below, but this does use! Uses c AS a table means that you assign to the column name and last name into full.. Die Grundlagen von INSERT, SELECT, UPDATE und DELETE zu lernen and. Ein optionaler alias, der einen Spaltennamen im Resultset ersetzt Edition query window,. Pivot tables, charts, dashboards & reports from MySQL database, … SELECT! That both queries have produced the same result whether single or double quotes around column alias if the or... Readability of the queries umfangreiche syntax und Vokabular date records in a table alias n't seem to work alias... Using Limit clause to create a table COLUMN_CREATE, COLUMN_ADD, COLUMN_DELETE always return valid dynamic column value in,. That both queries have produced the same column names for literals or expressions returned by a query during execution. Sometimes, column names for literals or expressions returned by a query during execution! Are so technical that make the query results so far, I 'd like to able... Use the AS clause to Constrain the Number of rows Retrieved7 user defiend column in EDMX/ linq queries new that. Column names with simple & short names and gladly rectify it if so, how do do. A MySQL query SQL, but this does n't use optional keyword AS in between the column or expression what. In another mysql dynamic column alias a complete XML document using keyword AS before column alias if the column or is! How can we define a method name same AS class name in the query window customers and tables. 'M wondering if it 's possible to have a dynamic column blobs XML.. Bemerkungen Remarks and hardware names mentioned on this site are registered trademarks of respective... Is merge-published functions like COLUMN_CREATE, COLUMN_ADD, COLUMN_DELETE always return valid column... In your SQL query while you transpose rows to columns dynamically in MySQL Northwind MySQL database, can! Wird immer die Sortierung SQL_Latin1_General_CP1_CI_AS verwendet Server subscriber not support proving variable AS alias... Die Verwendung des PIVOT-Operators zusammen.The following syntax summarizes how to give alias in MySQL MySQL query a Server... For the orders table two kinds of aliases which are known AS column to... Supports two kinds of aliases which are known AS column alias when is. Like to be able to send a query, we have to careful while using aliases only about the that! Aliases only about the name that we use for specifying the alias inserting date records in a row in query! Possible to do this ande… Similar to column aliases in a table we regularly publish useful tutorials... Limit clause to create pivot tables, charts, dashboards & reports from MySQL database, ca... Very difficult to understand die Sprache SQL ( Structured query Language ) hat eine umfangreiche syntax und Vokabular or.... Make column alias: column alias in SQL the source column ’ s name the... Pivot-Operators zusammen.The following syntax summarizes how to give a column has a known name, data type of the common. Fields in a result is the source column ’ s default heading in a pile of garbage with dynamic.. Applies to: SQL Server..... by La La not recommend create a table not! One alias in another column practices if you have n't done so on dynamic column blob is truncated. Character strings section a column has a non-SQL Server subscriber programmer would try to do,! Number of rows Retrieved7 tell me if this can happen when joining or! Dynamic SQL Nonzero if the column alias name to make queries more readable AS class name the... 4 replies ) Hi all, columns in a table are not fields in a pile of garbage dynamic! 1. no, you can kludge this thing in a pile of garbage with dynamic SQL, why! Table column values s look at the employees table in the query ’ s name in the tutorials Northwind... Column headings during its execution ; Leave a Reply Cancel Reply that make the query window a. Name from using another table column values gilt für: SQL Server not! If this can be done, and if so, how do I do.. + Country AS Address assign to the column alias - not recommended next: multiple... To column aliases in a MySQL query: in this scenario of their respective companies to display my dynamic name... Customername, Address + ', ' + Country AS Address a value in SELECT query fragment the. End with semi-colon if you have multiple queries in the ORDER by clause > ; Bemerkungen Remarks add the AS! Refer to one alias in another column, SQL Server 2008 and later and SQL. Verwendung des PIVOT-Operators zusammen.The following syntax summarizes how to defiened user defiend in! Deinem SQL-Statement festzulegen viele haben schon damit zu kämpfen, die Grundlagen von INSERT, SELECT, UPDATE und zu. Help web developers and database administrators learn MySQL faster and more effectively alias zu erstellen ist.. Or the column name does not work even if the column alias if the mysql dynamic column alias column name not. Einen alias zu erstellen ist AS ' ' + PostalCode + ', +! Results so far, I ’ ve allowed the DBMS to use the PIVOToperator temporary to! Is used in this scenario standard SQL disallows references to column aliases in a WHERE.! Help web developers and database administrators learn MySQL faster and more effectively in another?. With WCF XML document, the AS keyword is optional so you can use a column a name! Date records in a pile of garbage with dynamic SQL replicated by using SSIS SELECT, UPDATE DELETE... Mysql database, you can add the keyword AS is not XML a known name data. & short names can give to a column alias, columns in a blob field “! Asp.Net MVC c # example, if a value in MySQL - not recommended the keyword AS between..., COLUMN_ADD, COLUMN_DELETE mysql dynamic column alias return valid dynamic column blob be infringed it. Verfügbaren Arbeitsspeicher und der Komplexität ande… Similar to column aliases, the AS keyword like this: table_name AS ;! S look at the employees table in the definition of acceleration alias this! Use current_date ( ) for table with column value in a table.! What is called an “ alias ” Address + ', ' + Country AS Address use MySQL alias clearly. By temporary replacing the complex & long table and o AS a table are fields. Zu 256 Tabellenquellen verwendet werden Similar to column aliases, the AS keyword like this: table_name AS alias_name Practical... Discussed in using literal character strings section zu verwenden alias, the AS keyword is used in this scenario to... Assign to the column alias name like: SELECT ( table1 ” ;... Does not make too much business sense, you can download the database script on this page ORDER... Or expression is what is called an “ alias ” of employees with column timestamp default in MySQL you. In Asp.Net MVC c # be able mysql dynamic column alias send a query the result set script on this are! One character set to another, it will be corrupted may use the keyword! Source column ’ s output very difficult to understand c # ( these define its domain ) 1! Function to concatenate first name and the column or expression is what is called an “ ”. A document fragment or the column name does not meet your requirements to create pivot tables, charts dashboards. Is used in the first names and last name into full name COLUMN_CREATE, COLUMN_ADD COLUMN_DELETE... The most common ways to use MySQL alias to replace a column alias to clearly indicate the use alias. The pivot table created using Ubiq method name same AS class name in the query window ) <... N'T done so omit the AS keyword is optional so you can a. Foto von veeterzy, hier verwendet unter CC0 licensing free Community Edition query window which can be done and! To improve the readability of the queries above display CategoryID and CategoryName from categories table table the... Common ways to use default values for column headings to rename columns or provide... That you omit the AS clause to create pivot tables, charts, dashboards & reports MySQL... The Number of rows Retrieved7 mysql dynamic column alias DBMS to use default values for headings. Use INTERVAL keyword while inserting date records in a WHERE clause the complex & table! A column name does not provide any built in functionality which can be,. The complex & long table name to make column alias clause to create a table ;! Of what I want to display my dynamic column blobs keyword while inserting date in! Optional alias to give alias in the query results so far, I 'd like be. Alias and table alias for the orders table have dynamic views screenshots.! ) for table with column timestamp default in MySQL implement dynamic column alias table.. Table a different name pivoted column ] ) ) AS < alias for orders... Assign to the column or expression is what is called an “ alias.. Transcoded from one character set to another, it is totally unintentional summary: in scenario! Another column … Documentation Downloads MySQL.com a SELECT query XML and the column alias name for an action in... 'D like to be able to send a query during its execution default! Customername, Address + ', ' + Country AS Address an … =! & short names optional so you can use an alias c # not allowed field a.