• A5_COMBINE_FILTERS Function
• A5_GET_RECORDS_IN_QUERY Function
• A5_HAS_BASE_FILTER Function
• A5_REPLACE_PARAMETERS_MULTI Function
• a5_save_query Function
• a5_show_mru_query Function
• a5_toggle_qbf_genie Function
• a5cs_analyzesimplequery Function
• a5cs_determineoptimalquerylocation Function
• a5cs_getquerylocation Function
• CONVERT_EXPRESSION Function
• CROSSLEVEL Function
• EXPRESSION_COMMON_FILTER_ELIMINATE Function
• EXPRESSION_COMMON_ORDER_ELIMINATE Function
• EXPRESSION_INFO Function
• EXPRESSION_SUBEXPRESSION_ELIMINATE Function
• FLATTENQUERY Function
• MRU_QUERY Function
• QUERY_FILTER_GET Function
• query_load Function
• QUERY_ORDER_GET Function
• query_save Function
• REPLACE_PARAMETERS Function
• TYPEOF Function
• UNIQUE_KEY_VALUE Function

CROSSLEVEL Function

Syntax

Arguments

filter

A character filter expression that evaluates to a logical value and selects records from the set.

Description

Returns the record numbers of the parent level tables for records found when querying a set with one-many links.

Discussion

The CROSSLEVEL() function is useful when you have a form view of a set which has a one-many relationship. With the CROSSLEVEL() function you can filter the list of records using fields from the one-many child tables. Note : CROSSLEVEL() rcreates an intermediate index file of type .ASX. For this reason you must open the set with write access.

Example

For example, you might define the following query:

crosslevel("invoice_items->description = \"Techelon Safety Glasses\"")

This might find that there were 3 invoices that had these line items. When you viewed these 3 invoices, however, the embedded browse would show all of the line items for that invoice (not just the line items for Techelon Safety Glasses). Contrast this with the FLATTENQUERY() function which treats a multi-level set as a flat table.

See Also

• Query Functions and Methods
• Set Functions
• Set Methods
• FLATTENQUERY and CROSSLEVEL Compared
• Writing Expressions