char *dal_mas_ret_joi_mas (idm)

Returns the additional join condition of the mask passed.

Input Parameters Significance
DtvLong idm mask Id

Output Parameters Significance
no -

Return Code Significance
value join string
0 no join string set

Specifying a join condition allows you to display field contents from other data base tables in a mask. However, you cannot edit these fields contents and you should care for a write protection in the mask. In case of a query, the defined join string is automatically appended to the one generated by DataView. If you have set a join string, you will have to call dal_iwf_def_cns afterwards. .

For the structure of the join string the following rules apply:

Example: