What are Database and Columns?

In the database, you store the complete information about your business, social media etc. Some databases support relational databases. Means tables, every table consist of columns. Columns also called attributes.

How to Change the Table Columns Name?

SQL provides multiple ways to change your databases or tables columns name. We can easily change columns name through a simple query. Almost all the Database management systems provide queries as well as graphical user interfaces to change the columns name.

Change the column Using Query in SQL

The query for changing the name of an old column name with a new name is given below,

USE DATABASE;

GO 

EXEC sp_rename “ Old column name “ , “ New Column name ” , “ COLUMN “ ;

GO

Also, we can use an alternative solution for change the name of the column in the table.

ALTER TABLE tableName

CHANGE ‘ oldcolname ’  ‘ newcolname ’ datatype ( length ) ;

Also, database management systems provide build-in functions to change the existed columns name. Like this,

ALTER TABLE tableName

RENAME COLUMN ‘ oldcolname ‘  TO ‘ newcolname ‘ datatype ( length ) ;

Example

sp_rename ‘ employees.last_name ‘ , ‘ lname ‘ ,  ‘ COLUMN ‘ ;

OR

ALTER TABLE employees

ALTER COLUMN last_name VARCHAR ( 75 ) NOT NULL ;

How to Change Column Name in SQL Oracle

Oracle provides a query for changing the name of existing table columns,

RENAME COLUMN tableName.columnName TO newColumnName ;

How to Change Column Name in SQLite

In SQLite, you cannot change the name of the column. If you want to change the name of the column then you first delete the existing table and copy its data to a new table and change its columns name.

Syntax

PRAGMA foreign_keys = off ;

BEGIN TRANSACTION ;

ALTER TABLE table1 RENAME TO _table1_old ;

CREATE TABLE table1 (

column1 datatype [ NULL | NOT NULL ] ,

column2 datatype [ NULL | NOT NULL ] ,

…

) ;

INSERT INTO table1 ( column1 , column2 , . . . column_n )

SELECT column1 , column2 , . . . column_n

FROM  table1_old ;

COMMIT ;

PRAGMA foreign_keys = on ;

How to Change Column Name in SQL server 2008

EXEC sp_RENAME ‘ table_name.old_name ‘ , ‘ new_name ‘ , ‘ COLUMN ‘ ;

Use single quotes to enclose your old and new columns name.

Renaming a column SQL Server

You can easily change the columns name from your SQL server using the query:

EXEC sp_rename ‘ table_name.old_col_name ‘ , ‘ new_col_name ‘ ,  ‘ COLUMN ‘ ;

Example:

For example, we are changing the name of the column address from the customer table, the query is :

EXEC sp_rename ‘ customer.address ‘ , ‘ full_address ‘ , ‘ COLUMN ‘ ;

This query is not for m=only SQL server, using this you can change the table, databases, object and index etc.

How do I rename a column in MySQL?

To rename a column in MySQL the following syntax is used: ALTER TABLE table_name RENAME COLUMN old_column_name TO new_column_name; This command is used to change the name of a column to a new column name. However, renaming columns this way you run the risk of breaking database dependencies.

How do I rename a column in SQL w3schools?

To change the data type of a column in a table, use the following syntax:
  1. SQL Server / MS Access: ALTER TABLE table_name. ALTER COLUMN column_name datatype;
  2. My SQL / Oracle (prior version 10G): ALTER TABLE table_name. MODIFY COLUMN column_name datatype;
  3. Oracle 10G and later: ALTER TABLE table_name.

How display different column names in SQL?

How to Use Column Alias in SQL SELECT Statement for MySQL. By default, after executing a SELECT statement, the column heading(s) displayed in the result set is the name of the column in the table. You can override it with a column alias. That is, you can change a column heading by using a column alias.

Can we rename a column in the output of SQL query?

You can use a form of SQL SELECT AS to rename columns in your query results. To rename a column use AS. In this example we‘re renaming FirstName to First and LastName to Last.

How do I rename a column in a query?

Rename a column
  1. To open a query, locate one previously loaded from the Power Query Editor, select a cell in the data, and then select Query > Edit. For more information see Create, load, or edit a query in Excel.
  2. Select a column, and then select Transform > Rename.
  3. Enter the new name.

How do you change the name of a column?

To rename a column using Table Designer
  1. In Object Explorer, right-click the table to which you want to rename columns and choose Design.
  2. Under Column Name, select the name you want to change and type a new one.
  3. On the File menu, click Save table name.

How do I change a column name in R?

Method 1: using colnames() method

colnames() method in R is used to rename and replace the column names of the data frame in R. The columns of the data frame can be renamed by specifying the new column names as a vector. The new name replaces the corresponding old name of the column in the data frame.

How do you change a column value in SQL?

First, specify the table name that you want to change data in the UPDATE clause. Second, assign a new value for the column that you want to update. In case you want to update data in multiple columns, each column = value pair is separated by a comma (,). Third, specify which rows you want to update in the WHERE clause.

How do I change column headings in Excel 2010?

To change the column headings to letters, select the File tab in the toolbar at the top of the screen and then click on Options at the bottom of the menu. When the Excel Options window appears, click on the Formulas option on the left. Then uncheck the option called “R1C1 reference style” and click on the OK button.

What is a column title?

The column heading is a heading that identifies a column of a worksheet. Column headings are at the top of each column and are labeled A, B, Z, AA, AB .

How do I change column headers from numbers to letters in Excel 2010?

How do I get rid of column 1 in Excel?

How do I change column headings in Excel?

To change the column headings to letters, select the File tab in the toolbar at the top of the screen and then click on Options at the bottom of the menu. When the Excel Options window appears, click on the Formulas option on the left. Then uncheck the option called “R1C1 reference style” and click on the OK button.

How do I change rows and column names in Excel?

Rename columns and rows in a worksheet
  1. Click the row or column header you want to rename.
  2. Edit the column or row name between the last set of quotation marks. In the example above, you would overwrite the column name Gold Collection.
  3. Press Enter. The header updates.

How do I remove a column name in Excel?

Delete one or more names
  1. On the Formulas tab, in the Defined Names group, click Name Manager.
  2. In the Name Manager dialog box, click the name that you want to change.
  3. Select one or more names by doing one of the following: To select a name, click it.
  4. Click Delete.
  5. Click OK to confirm the deletion.

How do I get column names in Excel?