GET_PROJECTIONS

Returns contextual and projection information about projections of the specified anchor table.

Contextual information

• Database K-safety

• Number of database nodes

• Number of projections for this table

Projection data

For each projection, specifies:

• All buddy projections

• Whether it is segmented

• Whether it is safe

• Whether it is up-to-date.

You can also use GET_PROJECTIONS to monitor the progress of a projection data refresh.

This is a meta-function. You must call meta-functions in a top-level SELECT statement.

Behavior type

Syntax

GET_PROJECTIONS ( '[[database.]schema-name.]table' )

Parameters

`[database.]schema

Database and schema. The default schema is public. If you specify a database, it must be the current database.

table

Anchor table of the projections to list.

Privileges

None

Examples

The following example gets information about projections for VMart table store.store_dimension:

=> SELECT GET_PROJECTIONS('store.store_dimension');
-[ RECORD 1 ]---+
GET_PROJECTIONS | Current system K is 1.
# of Nodes: 3.
Table store.store_dimension has 2 projections.

Projection Name: [Segmented] [Seg Cols] [# of Buddies] [Buddy Projections] [Safe] [UptoDate] [Stats]
----------------------------------------------------------------------------------------------------
store.store_dimension_b1 [Segmented: Yes] [Seg Cols: "store.store_dimension.store_key"] [K: 1] [store.store_dimension_b0] [Safe: Yes] [UptoDate: Yes] [Stats: RowCounts]
store.store_dimension_b0 [Segmented: Yes] [Seg Cols: "store.store_dimension.store_key"] [K: 1] [store.store_dimension_b1] [Safe: Yes] [UptoDate: Yes] [Stats: RowCounts]