Delete

Kalipso - Form - Actions - Actions Description - Group Database - Delete

Deletes one or more records from the specified Database Table.

Action available for the following operating systems:

Parameters

• Table - Database Table where to delete the records from.

• Where <Kalipso Filter> or <string> - Condition to specify which records should be deleted. Check Expressions chapter for more information about Kalipso Filter and String expressions. If this parameter is empty, an error may occur, if you have selected Prevent the execution of Update/Delete Statemens without Where clause in "Online" or "Offline", defined in the Project Properties. To bypass this safety feature without unchecking the options check Example 1.

Usage

This function is intended to be similar Delete operation that exists in every SQL database, and is used to database tables according some conditions.

Consider the following Database Table:

Products
Code	Name	Stock
1	Coca Cola	100
2	Pepsi Cola	200
3	Pork Chops	300

Example 1

Table	Products
Where	1=1

Result:

Products
Code	Name	Stock
empty	empty	empty

Example 2

Table	Products
Where	FIELD(Products,Name) LIKE "%Cola"

Result:

Products
Code	Name	Stock
003	Pork Chops	300

When you specify more than one condition in Where parameter, the operator used between the conditions is "AND" or "OR".