Update

Overview

The provided TypeScript module Update contains a class with a static method for executing database update operations. Here's an explanation of the key components:

QueryParameter Interface:

export interface UpdateParameter {
    readonly type: string;
    readonly value: any;
}

This interface represents a parameter that can be used in an SQL update. It includes the type of the parameter (string) and its value (any).

Update Class:

The Update class provides a static method for executing SQL update statements.

Methods

execute

execute(sql: string, parameters?: (string | number | boolean | Date | UpdateParameter)[], datasourceName?: string): number

Executes the SQL update statement with optional parameters.

Parameters:

• sql: The SQL update statement to be executed.
• parameters: (Optional) An array of update parameters, including type and value.
• datasourceName: (Optional) The name of the data source.
• Return Value: The number of rows affected by the update operation.

Example Usage:

import { Update, UpdateParameter } from 'sdk/db/update';

// Example SQL update statement
const sqlStatement = 'UPDATE your_table SET column1 = ?, column2 = ? WHERE id = ?';

// Example update parameters
const updateParameters: UpdateParameter[] = [
  { type: 'string', value: 'new_value1' },
  { type: 'number', value: 42 },
  { type: 'number', value: 123 },
];

// Example data source name
const datasourceName = 'yourDataSource';

// Execute the SQL update statement
const affectedRows = Update.execute(sqlStatement, updateParameters, datasourceName);
console.log('Affected Rows:', affectedRows);

Replace your_table, new_value1, 42, 123, yourDataSource, and other placeholders with your actual module path, SQL update statement, update parameters, data source, and details.

Functions

---

Function	Description	Returns
execute(sql, parameters?, datasourceName?)	Executes a SQL update against the selected datasourceName with the provided parameters and returns the number of affected rows	int

parameters array supports primitives e.g. [1, 'John', 34.56] or objects in format {'type':'[DATA_TYPE]', 'value':[VALUE]} e.g. [1, {'type':'CHAR', 'value':'ISBN19202323322'}]