removeIndex: Removes an index from an Andromeda table

In Andromeda: Asynchronous Disk-Based Representation of Massive Data

Removes an index from an Andromeda table

Description

Removes an index from an Andromeda table

Usage

removeIndex(tbl, columnNames = NULL, indexName = NULL)

Arguments

tbl	An Andromeda table (or any other 'DBI' table).
columnNames	A vector of column names (character) on which the index was created. If not provided, then the indexName argument must be provided.
indexName	The name of the index. If not provided, the columnNames argument must be provided.

Details

Remove an index created using the createIndex() function. Either the index name or the column names on which the index was created must be provided.

Value

Invisibly returns the input table.

See Also

createIndex(), listIndices()

Examples

andr <- andromeda(cars = cars)

createIndex(andr$cars, "speed")

# Will be faster now that speed is indexed:
andr$cars %>%
  filter(speed == 10) %>%
  collect()
  
removeIndex(andr$cars, "speed")

close(andr)

Andromeda documentation built on Sept. 12, 2024, 7:41 a.m.