UUID Field Type Warning Spam (Low Priority) **Severity:** LOW (Cosmetic Only)

[LukasGPC]

Description:
When reading UUID fields without CAST operations (which must be avoided due to Issue #1), the driver logs warnings for every UUID field read.

Warning Message:

fromODBC: invalid type: -11 - list.ListItem{size:0x24, itemType:0x1, data:[]uint8{...}}

Symptoms:

• Warning logged for every UUID field in every row
• Clutters console output and log files
• Does not affect functionality

Example:

func listOrganizations(db *sql.DB) error {
    query := `SELECT Org_ID, Org_Name FROM GPC.Organization`
    rows, _ := db.Query(query)
    defer rows.Close()

    for rows.Next() {
        var orgID, orgName string
        rows.Scan(&orgID, &orgName) // Logs warning for Org_ID field
    }
    // Console output:
    // fromODBC: invalid type: -11 - list.ListItem{...}
    // fromODBC: invalid type: -11 - list.ListItem{...}
    // fromODBC: invalid type: -11 - list.ListItem{...}
    // (repeated for every row)

    return nil
}

Workaround:
Implement filtered log writer to suppress these warnings:

type FilteredWriter struct {
    writer io.Writer
}

func (fw *FilteredWriter) Write(p []byte) (n int, err error) {
    logMessage := string(p)

    // Filter out IRIS driver UUID warnings
    if strings.Contains(logMessage, "fromODBC: invalid type: -11") {
        return len(p), nil // Suppress this message
    }

    // Pass through all other log messages
    return fw.writer.Write(p)
}

func main() {
    // Set up filtered log output
    log.SetOutput(&FilteredWriter{writer: os.Stdout})

    // ... rest of application
}

Impact: Low - cosmetic only, but significantly clutters logs in production.

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