Передача параметров для Select в хранимую процедуру

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OlegE (2002-03-26 16:21) [3]

FIBPlus - это позволяют!

While working with TpFIBDataSet and TpFIBQuery it is also possible to use in the query macroses of the following types:
@MACROS_NAME[%][#]

@ - a sign of the beginning of the macros
% - an optional beginning of the default value of the macros
# - an optional sign that it it necessary to write the value of the macros
in inverted commas.

Using macroses you can dynamically change names of tables and fields in a query, conditions, etc.
To get access to values of macroses use ParamByName. ParamNameCount helps to get the total number of macroses in a query.

The example of using of macroses:

select * from @TT%TABLE1 where @F%FIELD1=@VAL%#John

The default form of the query before sending off to the server is

select * from TABLE1 where FIELD1="John"

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