package frostdb.schema.v1alpha1

Get desktop application:
View/edit binary Protocol Buffers messages

Column definition.

Used in: Schema

• string name = 1

  Name of the column.

• optional StorageLayout storage_layout = 2

  Storage layout of the column.

• bool dynamic = 3

  Whether the column can dynamically expand.

• bool prehash = 4

  Prehash the column before storing it. This is an optimization to speed up aggregation queries when this column is often aggregated. This will create a separate non-dynamic column with the same name and the prefix "hashed." that contains the prehashed values.

Schema definition for a table.

Used in: table.v1alpha1.TableConfig

• string name = 1

  Name of the schema.

• repeated Column columns = 2

  Columns in the schema.

• repeated SortingColumn sorting_columns = 3

  Columns to sort by in the schema.

• bool unique_primary_index = 4

  UniquePrimaryIndex defines whether the primary index is unique. Duplicate (according to the sorting column) rows will be dropped on compaction.

SortingColumn definition.

Used in: Schema

• string name = 1

  Name of the column to sort by.

• SortingColumn.Direction direction = 2

  Direction of the sorting.

• bool nulls_first = 3

  Whether nulls are the smallest or largest values.

Enum of possible sorting directions.

Used in: SortingColumn

• DIRECTION_UNKNOWN_UNSPECIFIED = 0

  Unknown direction.

• DIRECTION_ASCENDING = 1

  Sort in ascending order.

• DIRECTION_DESCENDING = 2

  Sort in descending order.

Storage layout describes the physical storage properties of a column.

Used in: Column

• StorageLayout.Type type = 1

  Type of the column.

• StorageLayout.Encoding encoding = 2

  Encoding of the column.

• StorageLayout.Compression compression = 3

  Compression of the column.

• bool nullable = 4

  Wether values in the column are allowed to be null.

• bool repeated = 5

  Whether the column is repeated.

Compression enum of a column.

Used in: StorageLayout

• COMPRESSION_NONE_UNSPECIFIED = 0

  No compression.

• COMPRESSION_SNAPPY = 1

  Snappy compression.

• COMPRESSION_GZIP = 2

  GZIP compression.

• COMPRESSION_BROTLI = 3

  Brotli compression.

• COMPRESSION_LZ4_RAW = 4

  LZ4_RAW compression.

• COMPRESSION_ZSTD = 5

  ZSTD compression.

Encoding enum of a column.

Used in: StorageLayout

• ENCODING_PLAIN_UNSPECIFIED = 0

  Plain encoding.

• ENCODING_RLE_DICTIONARY = 1

  Dictionary run-length encoding.

• ENCODING_DELTA_BINARY_PACKED = 2

  Delta binary packed encoding.

• ENCODING_DELTA_BYTE_ARRAY = 3

  Delta Byte Array encoding.

• ENCODING_DELTA_LENGTH_BYTE_ARRAY = 4

  Delta Length Byte Array encoding.

Type enum of a column.

Used in: StorageLayout

• TYPE_UNKNOWN_UNSPECIFIED = 0

  Unknown type.

• TYPE_STRING = 1

  Represents a string type.

• TYPE_INT64 = 2

  Represents an int64 type.

• TYPE_DOUBLE = 3

  Represents a double type.

• TYPE_BOOL = 4

  Represents a boolean type.

• TYPE_INT32 = 5

  Represents a int32 type.

• TYPE_UINT64 = 6

  Represents a uint64 type.