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31 Μαρ 2014 · You can simply use : CREATE VIEW viewname AS. SELECT colname "newcolname", colname "newcolname" FROM table-name; its like give alias name to col of view..
To change the data type of a column in a table, use the following syntax: SQL Server / MS Access: ALTER TABLE table_name. ALTER COLUMN column_name datatype; My SQL / Oracle (prior version 10G): ALTER TABLE table_name. MODIFY COLUMN column_name datatype; Oracle 10G and later: ALTER TABLE table_name.
The basic syntax for the ALTER VIEW statement is as follows: ALTER VIEW view_name. AS. SELECT columns. FROM tables. WHERE conditions; Here, view_name is the name of the view that you want to alter. The SELECT statement following the AS keyword defines the new query that will be used to redefine the view.
In the columns for the view, the permissions for a column name apply across a CREATE VIEW or ALTER VIEW statement, regardless of the source of the underlying data. For example, if permissions are granted on the SalesOrderID column in a CREATE VIEW statement, an ALTER VIEW statement can rename the SalesOrderID column, such as to OrderRef , and ...
2 Ιουν 2023 · In SQL, column renaming can be achieved using the ALTER TABLE statement, which modifies the structure of an existing table. The following are the required steps: Use the ALTER TABLE keyword followed by the table name. Specify the RENAME COLUMN keyword. Provide the current column name and the new column name separated by the TO keyword.
The COLLATE clause changes the collations only of columns of the char, varchar, nchar, and nvarchar data types. To change the collation of a user-defined alias data type column, use separate ALTER TABLE statements to change the column to a SQL Server system data type.
22 Ιουλ 2024 · Rename a column using table designer. In Object Explorer, right-click the table to which you want to rename columns and choose Design. Under Column Name, select the name you want to change and type a new one. On the File menu, select Save table name.
