orc
Project Status
This project is still a work in progress.
Current Support
| Column Encoding | Read | Write | Go Type |
|---|---|---|---|
| SmallInt, Int, BigInt | β | int64 | |
| Float, Double | β | float32, float64 | |
| String, Char, and VarChar | β | string | |
| Boolean | β | bool | |
| TinyInt | β | byte | |
| Binary | β | []byte | |
| Decimal | β | orc.Decimal | |
| Date | β | orc.Date (time.Time) | |
| Timestamp | β | time.Time | |
| Struct | β | orc.Struct (map[string]interface{}) | |
| List | β | []interface{} | |
| Map | β | []orc.MapEntry | |
| Union | β | interface{} |
- The writer support is in its late stages, however, I do not recommend using it yet.
Example
r, err := Open("./examples/demo-12-zlib.orc")
if err != nil {
log.Fatal(err)
}
defer r.Close()
// Create a new Cursor reading the provided columns.
c := r.Select("_col0", "_col1", "_col2")
// Iterate over each stripe in the file.
for c.Stripes() {
// Iterate over each row in the stripe.
for c.Next() {
// Retrieve a slice of interface values for the current row.
log.Println(c.Row())
}
}
if err := c.Err(); err != nil {
log.Fatal(err)
}