postgresql - Get error code number from postgres in Go -

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i'm unable retrieve error code number when error in postgres.

in test of program know i'll following error " pq: duplicate key value violates unique constraint "associations_pkey"".

looking in postgres docs pq error code of 23505.

i need number in go program can check on different types of errors , respond end user in helpful way.

however, can't seem hold of error code in go, error message. code follows:

stmt, _ := db.prepare("insert table (column_1) values ($1)")  _, err = stmt.exec("12324354")  if err != nil {     log.println("failed stmt .exec while trying insert new association")     log.println(err.error())     fmt.println(err.code())  } else {     render.json(w, 200, "new row created succesfully") }

you need type assert error type *pq.error:

pqerr := err.(*pq.error) log.println(pqerr.code)

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