Creates a sparse map.
Sparse maps are intended for small tables, join indexes, and hash indexes. You can colocate tables, join indexes, or hash indexes on the same AMPs. Tables that have the same sparse map and colocation name can be joined using the same primary index or primary AMP index columns without redistributing or duplicating rows. For example, you can colocate two tables, then join the tables on the primary index or primary AMP index columns. See the CREATE TABLE MAP option, ALTER TABLE (Map and Colocation Form), the CREATE JOIN INDEX MAP option, and the CREATE HASH INDEX MAP option.
You can also specify a sparse map for a table operator when a table operator is included in the FROM clause of a SELECT statement. See SQL Data Manipulation Language, B035-1146.
Required Privileges
You must have the CREATE MAP privilege. You must have been granted the contiguous map that you specify in this statement. See GRANT MAP in SQL Data Control Language, B035-1149.
Privileges Automatically Granted
The map creator is granted the map WITH GRANT OPTION that allows the creator to grant or revoke the created sparse map to users, PUBLIC, and roles.