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Home > Delphi/C++ Components > Absolute Database > Alter Table Add SQL Example

Absolute Database

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Alter Table Add SQL Example
This sample illustrates use of ALTER TABLE statement with ADD option.
This SQL script contains eight queries.
First one deletes table named "MyTable".
The second creates this table with 3 fields.
Queries 3 - 6 insert some data into the table.
The seventh query adds a new column named "val3" of type float to the table.
Query #8 retrieves all rows from this table.

drop table MyTable;
create table MyTable (ID AutoInc, val1 Integer, val2 string(10));
insert into MyTable (val1, val2) values (2,'2');
insert into MyTable (val1, val2) values (4,'3');
insert into MyTable (val1, val2) values (5,'9');
insert into MyTable (val1, val2) values (7,'Hello');
alter table MyTable add (val3 float);
select * from MyTable order by ID val2 desc;

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Product Info

Current version: 7.95
Released: February 08, 2023
Price: $ 149


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