17.14 SELECT_LIST_FROM_LOV Function

This function dynamically generates select lists from a shared list of values (LOV). Similar to other functions available in the APEX_ITEM package, these select list functions are designed to generate forms with F01 to F50 form array elements. This function is the same as SELECT_LIST_FROM_LOV, but its return value is CLOB. Use this function in SQL queries where you need to handle a column value longer than 4000 characters.

Syntax

APEX_ITEM.SELECT_LIST_FROM_LOV(
    p_idx           IN   NUMBER,
    p_value         IN   VARCHAR2 DEFAULT NULL,
    p_lov           IN   VARCHAR2,
    p_attributes    IN   VARCHAR2 DEFAULT NULL,
    p_show_null     IN   VARCHAR2 DEFAULT 'YES',
    p_null_value    IN   VARCHAR2 DEFAULT '%NULL%',
    p_null_text     IN   VARCHAR2 DEFAULT '%',
    p_item_id       IN   VARCHAR2 DEFAULT NULL,
    p_item_label    IN   VARCHAR2 DEFAULT NULL,
    p_show_extra    IN   VARCHAR2 DEFAULT 'YES')
    RETURN VARCHAR2;

Parameters

Table 17-14 SELECT_LIST_FROM_LOV Parameters

Parameter	Description
`p_idx`	Form element name. For example, `1` equals `F01` and `2` equals `F02`. Typically, the `p_idx` parameter is constant for a given column.
`p_value`	Current value. This value should be a value in the `p_lov` parameter.
`p_lov`	Text name of an application list of values. This list of values must be defined in your application. This parameter is used only by the `select_list_from_lov` function.
`p_attributes`	Extra HTML parameters you want to add.
`p_show_null`	Extra select option to enable the NULL selection. Range of values is `YES` and `NO`.
`p_null_value`	Value to be returned when a user selects the NULL option. Only relevant when `p_show_null` equals `YES`.
`p_null_text`	Value to be displayed when a user selects the NULL option. Only relevant when `p_show_null` equals `YES`.
`p_item_id`	HTML attribute ID for the `<select>` tag.
`p_item_label`	Invisible label created for the item.
`p_show_extra`	Shows the current value even if the value of `p_value` is not located in the select list.

Example

The following example demonstrates a select list based on an LOV defined in the application.

SELECT APEX_ITEM.SELECT_LIST_FROM_LOV(2,job,'JOB_FLOW_LOV')job 
FROM emp

Parent topic: APEX_ITEM