MariaDB Add Column With Default Value

This MariaDB tutorial will go through how the query executes the MariaDB Add Column With Default Value operation on the table. To assist you in better understanding the topic, we’ll talk about and conclude a few situations here. Below is a list of all the topics we’ll be talking about.

  • MariaDB Add Column With Default Value
  • MariaDB Alter Table Add Column With Default Value
  • MariaDB Add Column To Table With Default Value
  • How to add Default Value To Column in MariaDB
  • Add Column in MariaDB Table
  • MariaDB Add Column With Default Value Foreign Key

MariaDB Add Column With Default Value

In this subtopic section, we will learn and understand how to add a column with the default value in the MariaDB Table by the query, which will be understood with the help of syntax and an illustrated example.

In MariaDB, the ALTER TABLE statement is used to add, modify, drop/ delete columns from the table. It also renames the column of the table. Let’s see the syntax of the MariaDB ALTER TABLE statement to add a column with a default value of the table by the following query:

SYNTAX:

ALTER TABLE YOUR_TABLENAME ADD COLUMN DATATYPE DEFAULT DATA_VALUE;

EXAMPLE:

ALTER TABLE STATES_OF_USA ADD COLUMN STATE_SIZE VARCHAR(10) DEFAULT '25M';

DESC STATES_OF_USA;

As we see in the above query, we have used the ALTER TABLE statement to add column name as STATE_SIZE with the VARCHAR(10), and in default 25M will take as a record. But if any record doesn’t record then the default value will take as 25M to the STATE_SIZE column of the STATES_OF_USA table.

If we want to check new column is added to the STATES_OF_USA table then we will use the DESC statement for a new description of the STATES_OF_USA table.

MariaDB add column with default value example
Example of MariaDB Add Column With Default Value

We hope that you have understood the subtopic “MariaDB Add Column With Default Value” by using the MariaDB ALTER TABLE statement on the table by the query. For a better explanation, we have used an example and explained it in depth.

Read: MariaDB Vs SQL Server – Detailed Comparison

MariaDB Alter Table Add Column With Default Value

Here we will learn and understand how to use the MariaDB ALTER TABLE statement to add a column with a default value of the table by the following query:

EXAMPLE:

ALTER TABLE EMPLOYEE_DETAIL ADD COLUMN GMAIL_ACCOUNT VARCHAR(100) DEFAULT 'xxxx.xx@gmail.com';

SELECT * FROM EMPLOYEE_DETAIL;

In the previous query, the ALTER TABLE statement is used to add a new column called GMAIL_ACCOUNT with the datatype as VARCHAR(100). And in default, it will add the default value as ‘xxx.xx@gmail.com’ for any record while insertion into the EMPLOYEE_DETAIL table.

If we want to check a new column with a new record that has been added to the EMPLOYEE_DETAIL table then we will use the SELECT statement to retrieve all records from the EMPLOYEE_DETAIL table.

MariaDB alter table add column with default value example
Example of MariaDB Alter Table Add Column With Default Value

We hope that you have understood the subtopic “MariaDB Alter Table Add Column With Default Value” by using the MariaDB ALTER TABLE statement on the table by the query. For a better explanation, we have used an example and explained it in deepness.

Read: MariaDB Date Greater Than

MariaDB Add Column To Table With Default Value

We will learn and understand the subtopic “MariaDB Add Column To Table With Default Value” by using the MariaDB ALTER TABLE statement on the table by the following query:

EXAMPLE:

ALTER TABLE EMPLOYEE_DATA ADD COLUMN DEFAULT_DATE DATETIME DEFAULT '01-01-0001';

SELECT * FROM EMPLOYEE_DATA;

In the previous query, we used the ALTER TABLE statement to add a column called DEFAULT_DATE with the datatype as DATETIME and it will carry the default value as “01-01-2001 00:00:0000”.

Then we used the SELECT statement to retrieve all records from the EMPLOYEE_DATA with the included new column as DEFAULT_DATE and a new value as “01-01-2001 00:00:0000” for the output result set.

MariaDB add column to table with default value example
Example of MariaDB Add Column To Table With Default Value

We hope that you have understood the subtopic “MariaDB Add Column To Table With Default Value” by using the MariaDB ALTER TABLE statement on the table by the query. For better illustration, we have used an illustrated example and defined it in deepness.

Read: MariaDB Check Empty String

How to add Default Value To Column in MariaDB

In this MariaDB subtopic, we will learn and understand how to add a default value to a column in MariaDB by the following query:

EXAMPLE:

ALTER TABLE STATES_OF_USA MODIFY COLUMN STATE_SHORTFORM VARCHAR(10) DEFAULT 'US';

DESC STATES_OF_USA;

In the above query, we have used the ALTER TABLE statement to modify the column name as STATE_SHORTFORM which will add a default value in a string as the US for new values in the STATES_OF_USA table. Then we used the DESC statement to get descriptions and new modifications of columns in the STATES_OF_USA table.

We can also use the SELECT statement to retrieve all records from the STATES_OF_USA table if any new modification has been done to the table or not.

Add column in MariaDB table
Example of How to add a default value to a column in MariaDB

We hope that you have understood the subtopic “How to add Default Value To Column in MariaDB” by using the MariaDB ALTER TABLE statement on the table by the query. For better knowledge, we have used an example and described it in depth.

Read: MariaDB Check String Length

MariaDB Add Column With Default Value Foreign Key

In this MariaDB subtopic section, we will learn and understand how to add a column with a default value foreign key of the table by the following query:

EXAMPLE:

ALTER TABLE SKULLCANDY ADD COLUMN SKULLCANDY_ID INT DEFAULT 00;

DESC SKULLCANDY;

In the above query, we have used the ALTER TABLE statement to add a column called SKULLCANDY_ID with datatype as INT and it will carry a default value as 00 in the SKULLCANDY table.

Then we used the DESC statement to get the description and new modifications are done to the SKULLCANDY table.

MariaDB add column with default value foreign key example
Example of MariaDB Add Column With Default Value Foreign Key

We hope that you have understood the subtopic “MariaDB Add Column With Default Value Foreign Key” by using the MariaDB ALTER TABLE statement on the table by the query. We have used a sample example and defined it in profundity, for better acquaintance.

Also, take a look at some more MariaDB tutorials.

By the end of this MariaDB tutorial to might understand the use of MariaDB Add Column With Default Value after reading this lesson. We also discussed a few instances to help you comprehend the concept. Below is a list of all the topics we’ve covered.

  • MariaDB Add Column With Default Value
  • MariaDB Alter Table Add Column With Default Value
  • MariaDB Add Column To Table With Default Value
  • How to add Default Value To Column in MariaDB
  • Add Column in MariaDB Table
  • MariaDB Add Column With Default Value Foreign Key