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hedera-web-mindshore/js/sql/update.js

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527 B
JavaScript

var Dml = require ('./dml');
/**
* The equivalent of a SQL update.
*/
module.exports = new Class
({
Extends: Dml
,render: function (batch)
{
var sql;
var n;
sql = 'UPDATE ' + this.renderTarget (batch) + ' SET ';
for (n = 0; n < this.field.length; n++)
{
if (n > 0)
sql += ', ';
sql += this.field[n].render () + ' = ' + this.expr[n].render(batch);
}
if (this.where)
sql += ' WHERE ' + this.where.render (batch);
sql += ' LIMIT 1'; // Only for security.
return sql;
}
});