I have a qtableview to display result of a sql query.I have problems with filelds that defined to have float data types.

Table is defined in database as:
table1(studentId int,
studentGrade int,
weight float)
Here is how my table in database look like:
Qt Code: 
  1. studentId   studentGrade   weight
  2. 1               80                   0.7
  3. 2               90                   0.8
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i fill qSqlQueryModel with query (select * from table1) and then set model to qtableview.
But float fields' precision is lost.
Here is how my QTabelView looks like:
Qt Code: 
  1. studentId   studentGrade   weight
  2. 1               80                   0.69999999
  3. 2               90                   0.7999999
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anybody knows how to fix this?? i just want to see 0.7 and 0.8 in my qtableview.

thanx in adnavce.