List of columns to be processed specifically depends on COPY process direction in CSV mode.
property ForcedColumns : TStrings;
Fill ForcedColumns to include specific processing of some columns in CSV mode.
If TPSQLCopy receives data from server then it forces quoting to be used for all non-NULL values in each
specified column. NULL output is never quoted.
In sending data mode process each specified column as though it were quoted and hence not a
NULL value. For the default null string in CSV mode (''), this causes missing values to be
input as zero-length strings.
Property has no effect if coCSV is not included into Options property is specified.