DateTimeNowExpression

The DateTimeNowExpression is part of the Dynamic Where feature; it represents current database server date and time.

No operands are used by this expression.

Implementations

Example

Target SQL where clause:

WHERE order_date = GETDATE()

WhereExpression whereExpression = new BinaryExpression(
                  new FieldExpression("ORDERS", "order_date"),
                  new DateTimeNowExpression(),
                  BinaryOperator.Equal);

let whereExpression = BinaryExpression(
            FieldExpression("ORDERS", "order_date"),
            DateTimeNowExpression(),
            BinaryOperator.Equal)

WhereExpression where = new BinaryExpression(
              new FieldExpression("ORDERS","order_date"),
                          new DateTimeNowExpression(),
                          BinaryOperator.Equal);

let whereExpression = BinaryExpression(
            FieldExpression("ORDERS", "order_date"),
            DateTimeNowExpression(),
            BinaryOperator.Equal)

with ClientDataModule.tbl_ORDERS, DynamicWhere do begin
  Expression := NewBinaryExpression(
          NewField(LogicalName, 'order_date'),
          NewNow(),
          dboEqual);
end;

myTable.dynamicWhere = new RemObjects.DataAbstract.DynamicWhere(
      new RemObjects.DataAbstract.BinaryExpression(
          new RemObjects.DataAbstract.FieldExpression("order_date"),
          new RemObjects.DataAbstract.DateTimeNowExpression(),
        "Equal")
      );

Generated XML/JSON

<?xml version="1.0"?>
<query xmlns="http://www.remobjects.com/schemas/dataabstract/queries/5.0" version="5.0">
  <where>
    <binaryoperation operator="Equal">
      <field tablename="ORDERS">order_date</field>
      <datetimenow/>
    </binaryoperation>
  </where>
</query>

{
  "type": "query.where",
  "expression": {
    "type": "binaryoperation",
    "left": {
      "type": "field",
      "field": "order_date",
      "table": "ORDERS"
    },
    "operator": "Equal",
    "right": {
      "type": "datetimenow"
    }
  }
}