HSQLDB Resultset - how to get HSQLDB return space without quotes as space and not null? -

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i using hsqldb link existing text files, fire sql upon retrieve data in resultset. problem if text file has data space, hsql db resultset returns null those. ex: text file row:

data1|data2|| |data3

i expecting resultset

data1,data2,null, ,data3

the hsqldb doc guid/chpt5 states that: "empty fields treated null. these fields there nothing or spaces between separators." there way change default behaviour? treat no space between seperators null , space between seperators space?

according hsqldb documentation, "quoted empty strings treated empty strings.". in case, able modify existing text files? if so, replace instances of 1 or more spaces between 2 seperators using regular expression (ex: \|\s+\|) quoted equivalent: 

data1|data2|| |data3

would become

data1|data2||" "|data3

this should allow hsqldb pick field values instead of setting them null.


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