Select a BINTEXT column with rows panic about go-hdb

[stfnmllr]

The example should work with v0.100.7 although full test of BINTEXT is not yet finalized.

[stfnmllr]

Did make it work (v0.100.6), so that the example you shared is giving results. Anyway, need to provide some tests to be sure that the Bintext support is completely implemented.
Please share your findings in further tests as well. I'll leave the ticket open for the time being.
Thanks and best regards

[xhit]

Tested v0.100.6

Inserting values when there are at least 2 lob columns insert (BLOB, TEXT, BINTEXT) and one is BINTEXT then this error is returned:

protocol error: invalid number of lob parameter ids 1 - expected 2

Example code:

package main

import (
	"bytes"
	"database/sql"
	"fmt"
	"log"

	"github.com/SAP/go-hdb/driver"
)

func main() {
	// create dsn
	dsn := fmt.Sprintf("hdb://%s:%s@%s:%d", "username", "password", "host", 39013)

	// open db
	db, err := sql.Open("hdb", dsn)
	if err != nil {
		log.Print(err)
		return
	}

	err = db.Ping()
	if err != nil {
		log.Print(err)
		return
	}

	defer db.Close()

	// drop table if exists
	db.Exec(`drop table issue50`)

	// drop table at end for cleaning
	defer db.Exec(`drop table issue50`)

	// create the table
	_, err = db.Exec(`create table issue50 (a BLOB, b BINTEXT)`)
	if err != nil {
		log.Print(err)
		return
	}

	// select column types
	rows, err := db.Query(`select * from issue50`)
         if err != nil {
		log.Print(err)
		return
	}

	types, _ := rows.ColumnTypes()
	for _, v := range types {
		log.Printf("%s", v.DatabaseTypeName())
	}

	// begin transaction
	tx, err := db.Begin()

	stmt, err := tx.Prepare("insert into issue50 (a,b) values (?,?)")
	if err != nil {
		log.Print(err)
		return
	}

	defer stmt.Close()

	// create a lob reader for BLOB
	lobBLOB := new(driver.Lob)
	r := bytes.NewReader([]byte("0123456789"))
	lobBLOB.SetReader(r)

	// create a lob reader for BINTEXT
	lobBINTEXT := new(driver.Lob)
	r1 := bytes.NewReader([]byte("0123456789"))
	lobBINTEXT.SetReader(r1)

	_, err = stmt.Exec(lobBLOB, lobBINTEXT)
	if err != nil {
		log.Print(err)
		return
	}

	// commit transaction
	err = tx.Commit()
	if err != nil {
		log.Print(err)
		return
	}

	// print success
	log.Print("success")
}

This should be another issue because this was completed, but I think you said this issue will be open while BINTEXT is in alpha.

[stfnmllr]

Thanks for testing!

This should be another issue because this was completed, but I think you said this issue will be
open while BINTEXT is in alpha.

Yes, that's fine - let's use this ticket until all issues with BINTEXT are ironed out.
Best regards

[xhit]

Works.

For now the v0.100.7 works like expected in my tests. I will test all other new releases to check until BINTEXT is completed.

Thanks.

[stfnmllr]

Thanks for your testing effort and confirming on the bug resolution.

[xhit]

Tested v0.100.10. Works.

[xhit]

Tested v0.102.2. Works.