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I loaded a shapefile into a PostGIS database. When I visualized it in QGIS I noticed that in the attribute table, some fields with integer data type, are displayed in a strange form.

However when I save the data as shapefile the fields look normal.

Why does this happen?

enter image description here

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    Can you check and specify data types and precision for both tables? – Basile May 26 '18 at 16:17
  • The notation in the first image is a variation on scientific notation. The e stands for exponent. 3,86589e+07 is the same as 3,86589 x 10^07 (3,86589 times 10 to the seventh power). – csk May 26 '18 at 16:18
  • i loaded a set of shapefiles whit long data type and precision 9 after that , merge them into a single table. when i check the table properties in postgis they apear as integer without specified precision. then when i save them as shapefile they appear as double whit 10. anyway i tried whit a early version of qgis (beacause i was using Qgis 3) and now the fields shows in normal way (whit 2.18 version) – GeoGian May 26 '18 at 19:44

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