Linuxteaching
Column
How to Rename a Column Name in SQL Server Database
Using SQL Server Management Studio In Object Explorer, connect to an instance of Database Engine. In Object Explorer, right-click the table in which y...
Alter Column in MySQL
The syntax to modify a column in a table in MySQL (using the ALTER TABLE statement) is ALTER TABLE table_name MODIFY column_name column_definition [ F...
MySQL Add a Column to Existing Table
How do I add a column to an existing table in MySQL? How do I add a column to an existing table? How do I add multiple new columns to an existing tabl...
pandas groupby sum one column
How do you sum in Groupby pandas? How do I sum a column in pandas? How do you sum a Groupby in Python? How do I add a column to Groupby pandas? How do...
awk get second column
How do I get the second column in awk? How do I print the second last column in awk? How do I go to the second column in bash? How do I go to the seco...
mysql alter table change column type
MySQL Change Column Type First, we will specify the table name after the ALTER TABLE keywords containing the column we are going to modify. Second, we...
mysql delete column
The syntax to drop a column in a table in MySQL (using the ALTER TABLE statement) is ALTER TABLE table_name DROP COLUMN column_name; table_name. How d...
rename column 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...
How to use MySQL auto-increment
Syntax for MySQL MySQL uses the AUTO_INCREMENT keyword to perform an auto-increment feature. By default, the starting value for AUTO_INCREMENT is 1, a...
Linux Column Command
column command in Linux is used to display the contents of a file in columns. The input may be taken from the standard input or from the file. This co...