Programming language: Go
License: Apache License 2.0
Latest version: v2021.04.1

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ydb-go-sdk - pure Go native and database/sql driver for YDB

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Supports table, discovery, coordination, ratelimiter, scheme, scripting and topic clients for YDB. YDB is an open-source Distributed SQL Database that combines high availability and scalability with strict consistency and ACID transactions. YDB was created primarily for OLTP workloads and supports some OLAP scenarious.


go get -u github.com/ydb-platform/ydb-go-sdk/v3

Example Usage

  • connect to YDB golang db, err := ydb.Open(ctx, "grpcs://localhost:2135/local") if err != nil { log.Fatal(err) }
  • execute SELECT query ``golang const query =SELECT 42 as id, "myStr" as myStr;`

// Do retry operation on errors with best effort queryErr := db.Table().Do(ctx, func(ctx context.Context, s table.Session) (err error) { _, res, err := s.Execute(ctx, table.DefaultTxControl(), query, nil) if err != nil { return err } defer res.Close() if err = res.NextResultSetErr(ctx); err != nil { return err } for res.NextRow() { var id int32 var myStr string err = res.ScanNamed(named.Required("id", &id),named.OptionalWithDefault("myStr", &myStr)) if err != nil { log.Fatal(err) } log.Printf("id=%v, myStr='%s'\n", id, myStr) } return res.Err() // for driver retry if not nil }) if queryErr != nil { log.Fatal(queryErr) }

* usage with `database/sql` (see additional docs in [SQL.md](SQL.md) )
import (

    _ "github.com/ydb-platform/ydb-go-sdk/v3"


db, err := sql.Open("ydb", "grpcs://localhost:2135/local")
if err != nil {
defer db.Close() // cleanup resources
var (
    id    int32
    myStr string
row := db.QueryRowContext(context.TODO(), `SELECT 42 as id, "my string" as myStr`)
if err = row.Scan(&id, &myStr); err != nil {
    log.Printf("select failed: %v", err)
log.Printf("id = %d, myStr = \"%s\"", id, myStr)

More examples of usage placed in examples repository.


Driver implements several ways for making credentials for YDB:

  • ydb.WithAnonymousCredentials() (enabled by default unless otherwise specified)
  • ydb.WithAccessTokenCredentials("token")
  • ydb.WithStaticCredentials("user", "password"),
  • as part of connection string, like as grpcs://user:password@endpoint/database

Another variants of credentials.Credentials object provides with external packages:

Package Type Description Link of example usage
ydb-go-yc credentials credentials provider for Yandex.Cloud yc.WithServiceAccountKeyFileCredentials yc.WithInternalCA yc.WithMetadataCredentials
ydb-go-yc-metadata credentials metadata credentials provider for Yandex.Cloud yc.WithInternalCA yc.WithCredentials
ydb-go-sdk-auth-environ credentials create credentials from environ ydbEnviron.WithEnvironCredentials

Ecosystem of debug tools over ydb-go-sdk

Package ydb-go-sdk provide debugging over trace events in package trace. Next packages provide debug tooling:

Package Type Description Link of example usage
ydb-go-sdk-zap logging logging ydb-go-sdk events with zap package ydbZap.WithTraces
ydb-go-sdk-zerolog logging logging ydb-go-sdk events with zerolog package ydbZerolog.WithTraces
ydb-go-sdk-metrics metrics common metrics of ydb-go-sdk. Package declare interfaces such as Registry, GaugeVec and Gauge and use it for traces
ydb-go-sdk-prometheus metrics prometheus wrapper over ydb-go-sdk-metrics ydbPrometheus.WithTraces
ydb-go-sdk-opentracing tracing opentracing plugin for trace internal ydb-go-sdk calls ydbOpentracing.WithTraces

Environment variables

ydb-go-sdk supports next environment variables which redefines default behavior of driver

Name Type Default Description
YDB_SSL_ROOT_CERTIFICATES_FILE string path to certificates file
YDB_LOG_SEVERITY_LEVEL string quiet severity logging level of internal driver logger. Supported: trace, debug, info, warn, error, fatal, quiet
YDB_LOG_DETAILS string .* regexp for lookup internal logger logs
GRPC_GO_LOG_VERBOSITY_LEVEL integer set to 99 to see grpc logs
GRPC_GO_LOG_SEVERITY_LEVEL string set to info to see grpc logs

*Note that all licence references and agreements mentioned in the ydb-go-sdk README section above are relevant to that project's source code only.