• *expression_fold_constants Function
• *property_filter Function
• *substitute Function
• *summary_default_group_get Function
• a5_argumentsreplace Function
• a5_definearguments Function
• A5_EVAL_EXPRESSION Function
• a5_evalvalueexpr Function
• a5_expression_library Function
• a5_function_finder Function
• a5_gen_filter_component Function
• a5_get_expression_longnames Function
• a5_make_search_expn Function
• a5_parse_top_x_filter Function
• a5_prompt_special_filter Function
• a5_simpleargumentdefinition Function
• a5_unflatten_query Function
• a5_validate_xbasic_expression Function
• BETWEEN_CHAR Function
• BETWEEN_DATE Function
• BETWEEN_NUM Function
• BETWEEN_RECORD Function
• combine_filters Function
• eval_variables_valid Function
• EVALUATE_TEMPLATE Function
• EVALUATE_TEMPLATE_PRIVATE Function
• expression_demote_unique_keys Function
• expression_encode Function
• expression_reduce_filter Function
• filter_library_by_tags Function
• getfieldsinexpression Function
• IF Function
• SELECTLIST Function
• template_to_expression Function

combine_filters Function

Syntax

Arguments

filter1Character

First filter to combine.

filter2Character

Second filter to combine.

AndOrCharacter

Default = "AND". The operator used to combine the filters. If blank, uses "AND". Can be "AND" or "OR". Specify "AND" to use the AND operator and "OR" to use the OR operator.

flagSQLSyntaxLogical

Default = .f.. If .t., uses SQL syntax (AND, OR). Otherwise, uses Xbasic (.AND., .OR.).

Returns

resultCharacter

Returns a new filter expression that combines the two specified filters.

Description

Combine two filter expressions into a single filter expression.

Example

dim fil1 as C
dim fil2 as C
fil1 = "customer->lastname > 'A'"
fil2 = "customer->bill_state_region > 'MA'"

? combine_filters(fil1, fil2)
= "(customer->lastname > 'A') .AND. (customer->bill_state_region > 'MA')"

? combine_filters(fil1, fil2,"and")
= "(customer->lastname > 'A') .AND. (customer->bill_state_region > 'MA')"

? combine_filters(fil1, fil2,"or")
= "(customer->lastname > 'A') .OR. (customer->bill_state_region > 'MA')"

? combine_filters(fil1, fil2,"")
= "(customer->lastname > 'A') .AND. (customer->bill_state_region > 'MA')"

? combine_filters(fil1, fil2,"",.t.)
= "(customer->lastname > 'A') AND (customer->bill_state_region > 'MA')"

? combine_filters(fil1, fil2,"or",.t.)
= "(customer->lastname > 'A') OR (customer->bill_state_region > 'MA')"

? combine_filters(fil1, fil2,"",.f.)
= "(customer->lastname > 'A') .AND. (customer->bill_state_region > 'MA')"