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sql change column types

ALTER TABLE table_name
ALTER COLUMN column_name datatype;

-- Example
ALTER TABLE product
ALTER COLUMN description VARCHAR(250);
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sql server alter column

ALTER TABLE table_name 
ALTER COLUMN column_name new_data_type(size);
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alter table query sql server change column

ALTER TABLE employees
  ALTER COLUMN last_name VARCHAR(75) NOT NULL;
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Change column data type sql

ALTER TABLE TableName 
ALTER COLUMN ColumnName NVARCHAR(200) [NULL | NOT NULL]
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alter table query sql server change column

ALTER TABLE table_name
  ALTER COLUMN column_name column_type;
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sql alter column name sql server

EXEC sp_RENAME 'table_name.oldColumn_name' , 'newColumn_name', 'COLUMN'
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SQL Modify Column in a Table -SQL Server

ALTER TABLE Customers
ALTER COLUMN age VARCHAR(2);
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sql alter column

Changes the data type of a table’s column.
Example: In the ‘users’ table, make the column ‘incept_date’ into a
‘datetime’ type.
ALTER TABLE users
ALTER COLUMN incept_date datetime;
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How to Alter column in SQL Server - NAYCode.com

-- ****** For more tutorial, visit NAYCode.com
Alter Table Customers Alter Column Cust_City nvarchar(100)
Alter Table Customers Alter Column Cust_State nvarchar(100)
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alter table query sql server change column

sp_rename 'employees.last_name', 'lname', 'COLUMN';
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How to Alter column in SQL Server - NAYCode.com

Alter Table [Table Name] Alter Column [Column Name]  [datatype]
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alter table query sql server change column

sp_rename 'table_name.old_column_name', 'new_column_name', 'COLUMN';
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alter table query sql server change column

ALTER TABLE table_name
  DROP COLUMN column_name;
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