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

Absolute Database

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Alter Table Modify SQL Example
This sample illustrates use of ALTER TABLE statement with MODIFY option.
This SQL script contains eight queries.
First one deletes table named "MyTable".
The second creates this table with 2 fields.
Queries 3 - 6 insert some data into the table.
The seventh query modifies column named "val1" so that it turns to be string.
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 mofify (val1 string(5));
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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