Rename column name in mysql9/18/2023 ![]() ![]() Now see the updated column name by using the following statement as follows. The final output of the show databases queries we illustrate by using the following snapshot. In this example, emp_id is the old column name we need to rename by id with data type integer, as shown in the above statement. In the above example, we use the alter table command to rename the column name, here emp the specified table name that we need to alter after that, we use the change keyword to rename the column name. The final output of the show databases queries we illustrate by using the following snapshot.Īfter that, the user can select any column name we need to rename as follows. It is helpful to see all the column names with its definition. In the above statement, we use describe command to see the detailed structure of the emp table. Let’s see the different examples of rename columns as follows.įirst, see the table structure by using the following statement. The rename column clause can be used only to rename column names if we need more functions, such as changing the data definition and position of the column, we need the change clause instead of the column clause. ![]() We cannot rename column names that are already present in the table. Another essential function of the change clause is placing the column in a different position using the first or after column clause as per our requirement.Īnother way to rename columns is that rename column clauses it is the simplest way to rename column names. In this clause, we can also change the data type of the column, and in this clause, the data type is mandatory even if we need to keep the existing data type. The change is used to rename the column from the specified table. It offers a warning message, and the alter command will move on to the next clause in the statement. When clauses are used IF EXISTS and IF NOT EXISTS, queries will not show the error message when the condition is triggered for that clause. Then we use the above syntax to rename the column name with the column definition. First, we need to see the structure table we need to alter using the command. The first user must have altered table privileges to rename the column name from the specified table.įor the rename column, we use alter table command, by using alter table command we can change the structure of the specified table. Let’s see how the rename column name works in MariaDB as follows. ![]()
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