AzureKusto (version 1.0.1)

inner_join.tbl_kusto_abstract: Join methods for Kusto tables

Description

These methods are the same as other joining methods, with the exception of the .strategy, .shufflekeys and .num_partitions optional arguments. They provide hints to the Kusto engine on how to execute the join, and can sometimes be useful to speed up a query. See the Kusto documentation for more details.

Usage

# S3 method for tbl_kusto_abstract
inner_join(x, y, by = NULL,
  suffix = c(".x", ".y"), .strategy = NULL, .shufflekeys = NULL,
  .num_partitions = NULL, .remote = NULL, ...)
# S3 method for tbl_kusto_abstract
left_join(x, y, by = NULL,
  suffix = c(".x", ".y"), .strategy = NULL, .shufflekeys = NULL,
  .num_partitions = NULL, .remote = NULL, ...)
# S3 method for tbl_kusto_abstract
right_join(x, y, by = NULL,
  suffix = c(".x", ".y"), .strategy = NULL, .shufflekeys = NULL,
  .num_partitions = NULL, .remote = NULL, ...)
# S3 method for tbl_kusto_abstract
full_join(x, y, by = NULL,
  suffix = c(".x", ".y"), .strategy = NULL, .shufflekeys = NULL,
  .num_partitions = NULL, .remote = NULL, ...)
# S3 method for tbl_kusto_abstract
semi_join(x, y, by = NULL,
  suffix = c(".x", ".y"), .strategy = NULL, .shufflekeys = NULL,
  .num_partitions = NULL, .remote = NULL, ...)
# S3 method for tbl_kusto_abstract
anti_join(x, y, by = NULL,
  suffix = c(".x", ".y"), .strategy = NULL, .shufflekeys = NULL,
  .num_partitions = NULL, .remote = NULL, ...)

Arguments

x, y

Kusto tbls.

by

The columns to join on.

suffix

The suffixes to use for deduplicating column names.

.strategy

A join strategy hint to pass to Kusto. Currently the values supported are "shuffle" and "broadcast".

.shufflekeys

A character vector of column names to use as shuffle keys.

.num_partitions

The number of partitions for a shuffle query.

.remote

A join strategy hint to use for cross-cluster joins. Can be "left", "right", "local" or "auto" (the default).

...

Other arguments passed to lower-level functions.

See Also

dplyr::join

Examples

# NOT RUN {
tbl1 <- tbl_kusto(db, "table1")
tbl2 <- tbl_kusto(db, "table2")

# standard dplyr syntax:
left_join(tbl1, tbl2)

# Kusto extensions:
left_join(tbl1, tbl2, .strategy="broadcast") # a broadcast join

left_join(tbl1, tbl2, .shufflekeys=c("var1", "var2")) # shuffle join with shuffle keys

left_join(tbl1, tbl2, .num_partitions=5)     # no. of partitions for a shuffle join
# }
# NOT RUN {
# }