Cloud Spanner V1 Client - Class KeyRange (1.78.0)

Reference documentation and code samples for the Cloud Spanner V1 Client class KeyRange.

KeyRange represents a range of rows in a table or index.

A range has a start key and an end key. These keys can be open or closed, indicating if the range includes rows with that key. Keys are represented by lists, where the ith value in the list corresponds to the ith component of the table or index primary key. Individual values are encoded as described here. For example, consider the following table definition: CREATE TABLE UserEvents ( UserName STRING(MAX), EventDate STRING(10) ) PRIMARY KEY(UserName, EventDate); The following keys name rows in this table: ["Bob", "2014-09-23"] ["Alfred", "2015-06-12"] Since the UserEvents table's PRIMARY KEY clause names two columns, each UserEvents key has two elements; the first is the UserName, and the second is the EventDate. Key ranges with multiple components are interpreted lexicographically by component using the table or index key's declared sort order. For example, the following range returns all events for user "Bob" that occurred in the year 2015: "start_closed": ["Bob", "2015-01-01"] "end_closed": ["Bob", "2015-12-31"] Start and end keys can omit trailing key components. This affects the inclusion and exclusion of rows that exactly match the provided key components: if the key is closed, then rows that exactly match the provided components are included; if the key is open, then rows that exactly match are not included. For example, the following range includes all events for "Bob" that occurred during and after the year 2000: "start_closed": ["Bob", "2000-01-01"] "end_closed": ["Bob"] The next example retrieves all events for "Bob": "start_closed": ["Bob"] "end_closed": ["Bob"] To retrieve events before the year 2000: "start_closed": ["Bob"] "end_open": ["Bob", "2000-01-01"] The following range includes all rows in the table: "start_closed": [] "end_closed": [] This range returns all users whose UserName begins with any character from A to C: "start_closed": ["A"] "end_open": ["D"] This range returns all users whose UserName begins with B: "start_closed": ["B"] "end_open": ["C"] Key ranges honor column sort order. For example, suppose a table is defined as follows: CREATE TABLE DescendingSortedTable { Key INT64, ... ) PRIMARY KEY(Key DESC); The following range retrieves all rows with key values between 1 and 100 inclusive: "start_closed": ["100"] "end_closed": ["1"] Note that 100 is passed as the start, and 1 is passed as the end, because Key is a descending column in the schema.

Generated from protobuf message google.spanner.v1.KeyRange

Namespace

Google \ Cloud \ Spanner \ V1

Methods

__construct

Constructor.

Parameters
Name Description
data array

Optional. Data for populating the Message object.

↳ start_closed Google\Protobuf\ListValue

If the start is closed, then the range includes all rows whose first len(start_closed) key columns exactly match start_closed.

↳ start_open Google\Protobuf\ListValue

If the start is open, then the range excludes rows whose first len(start_open) key columns exactly match start_open.

↳ end_closed Google\Protobuf\ListValue

If the end is closed, then the range includes all rows whose first len(end_closed) key columns exactly match end_closed.

↳ end_open Google\Protobuf\ListValue

If the end is open, then the range excludes rows whose first len(end_open) key columns exactly match end_open.

getStartClosed

If the start is closed, then the range includes all rows whose first len(start_closed) key columns exactly match start_closed.

Returns
Type Description
Google\Protobuf\ListValue|null

hasStartClosed

setStartClosed

If the start is closed, then the range includes all rows whose first len(start_closed) key columns exactly match start_closed.

Parameter
Name Description
var Google\Protobuf\ListValue
Returns
Type Description
$this

getStartOpen

If the start is open, then the range excludes rows whose first len(start_open) key columns exactly match start_open.

Returns
Type Description
Google\Protobuf\ListValue|null

hasStartOpen

setStartOpen

If the start is open, then the range excludes rows whose first len(start_open) key columns exactly match start_open.

Parameter
Name Description
var Google\Protobuf\ListValue
Returns
Type Description
$this

getEndClosed

If the end is closed, then the range includes all rows whose first len(end_closed) key columns exactly match end_closed.

Returns
Type Description
Google\Protobuf\ListValue|null

hasEndClosed

setEndClosed

If the end is closed, then the range includes all rows whose first len(end_closed) key columns exactly match end_closed.

Parameter
Name Description
var Google\Protobuf\ListValue
Returns
Type Description
$this

getEndOpen

If the end is open, then the range excludes rows whose first len(end_open) key columns exactly match end_open.

Returns
Type Description
Google\Protobuf\ListValue|null

hasEndOpen

setEndOpen

If the end is open, then the range excludes rows whose first len(end_open) key columns exactly match end_open.

Parameter
Name Description
var Google\Protobuf\ListValue
Returns
Type Description
$this

getStartKeyType

Returns
Type Description
string

getEndKeyType

Returns
Type Description
string