Documentation
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Overview ¶
Example (UnmarshallResultSet) ¶
ctx := context.TODO()
db, err := ydb.Open(ctx, "grpc://localhost:2136/local")
if err != nil {
panic(err)
}
defer db.Close(ctx) // cleanup resources
type myStruct struct {
ID int32 `sql:"id"`
Str string `sql:"myStr"`
}
rows, err := db.Query().ReadResultSet(ctx, `
SELECT 42 as id, "myStr42" as myStr
UNION
SELECT 43 as id, "myStr43" as myStr
ORDER BY id
`)
if err != nil {
panic(err)
}
many, err := sugar.UnmarshallResultSet[myStruct](rows)
if err != nil {
panic(err)
}
fmt.Print("many = [")
for i, s := range many {
if i > 0 {
fmt.Print(",")
}
fmt.Printf("\n\t%+v", s)
}
fmt.Println("\n]")
// many = [
// &{ID:42 Str:myStr42},
// &{ID:43 Str:myStr43}
//]
Output:
Example (UnmarshallRow) ¶
ctx := context.TODO()
db, err := ydb.Open(ctx, "grpc://localhost:2136/local")
if err != nil {
panic(err)
}
defer db.Close(ctx) // cleanup resources
type myStruct struct {
ID int32 `sql:"id"`
Str string `sql:"myStr"`
}
row, err := db.Query().ReadRow(ctx, `SELECT 42 as id, "my string" as myStr`)
if err != nil {
panic(err)
}
one, err := sugar.UnmarshallRow[*myStruct](row)
if err != nil {
panic(err)
}
fmt.Printf("one = %+v\n", one)
// one = &{ID:42 Str:my string}
Output:
Index ¶
- func DSN(endpoint, database string, secure bool) (s string)
- func GenerateDeclareSection[T constraint](parameters T) (string, error)deprecated
- func IsColumnTableExists(ctx context.Context, c scheme.Client, absTablePath string) (exists bool, _ error)
- func IsDirectoryExists(ctx context.Context, c scheme.Client, absTablePath string) (exists bool, _ error)
- func IsEntryExists(ctx context.Context, c scheme.Client, absPath string, ...) (exists bool, _ error)
- func IsTableExists(ctx context.Context, c scheme.Client, absTablePath string) (exists bool, _ error)
- func LoadCertificatesFromFile(caFile string) ([]*x509.Certificate, error)
- func LoadCertificatesFromPem(bytes []byte) (certs []*x509.Certificate)
- func MakeRecursive(ctx context.Context, db dbForMakeRecursive, pathToCreate string) error
- func RemoveRecursive(ctx context.Context, db dbFoRemoveRecursive, pathToRemove string) error
- func Result(r query.Result) *result
- func StackRecord(depth int) string
- func ToYdbParam(param sql.NamedArg) (*params.Parameter, error)
- func UnmarshallResultSet[T any](resultSet query.ResultSet) (values []*T, _ error)
- func UnmarshallRow[T any](row query.Row) (*T, error)
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func DSN ¶ added in v3.21.0
DSN makes connection string (data source name) by endpoint, database and secure
func GenerateDeclareSection
deprecated
added in
v3.28.0
GenerateDeclareSection generates DECLARE section text in YQL query by params
Deprecated: use testutil.QueryBind(ydb.WithAutoDeclare()) helper. In YDB since version 24.1 declare sections not requires. Will be removed after Oct 2024. Read about versioning policy: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#deprecated
func IsColumnTableExists ¶ added in v3.48.1
func IsDirectoryExists ¶ added in v3.42.7
func IsEntryExists ¶ added in v3.48.1
func IsTableExists ¶ added in v3.40.0
func LoadCertificatesFromFile ¶ added in v3.23.0
func LoadCertificatesFromFile(caFile string) ([]*x509.Certificate, error)
LoadCertificatesFromFile read and parse caFile and returns certificates
func LoadCertificatesFromPem ¶ added in v3.23.0
func LoadCertificatesFromPem(bytes []byte) (certs []*x509.Certificate)
LoadCertificatesFromPem parse bytes and returns certificates
func MakeRecursive ¶ added in v3.5.2
MakeRecursive creates path inside database pathToCreate is a database root relative path MakeRecursive method equal bash command `mkdir -p ~/path/to/create` where `~` - is a root of database
func RemoveRecursive ¶ added in v3.5.2
RemoveRecursive removes selected directory or table names in the database. pathToRemove is a database root relative path. All database entities in the prefix path will be removed if the names list is empty. An empty prefix means using the root of the database. RemoveRecursive method is equivalent to the bash command `rm -rf ~/path/to/remove` where `~` is the root of the database.
func Result ¶ added in v3.57.0
Result converts query.Result to iterable result for compatibility with table/result.Result usage
Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
func StackRecord ¶ added in v3.48.7
func ToYdbParam ¶ added in v3.38.0
ToYdbParam converts
Internals: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#internals
func UnmarshallResultSet ¶ added in v3.69.0
UnmarshallResultSet returns slice of typed objects from given query.ResultSet
Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
func UnmarshallRow ¶ added in v3.69.0
UnmarshallRow returns typed object from query.Row
Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
Types ¶
This section is empty.
Source Files