join function

Join methods for Kusto tables

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.

## S3 method for class 'tbl_kusto_abstract'
inner_join(
  x,
  y,
  by = NULL,
  copy = NULL,
  suffix = c(".x", ".y"),
  ...,
  keep = NULL,
  .strategy = NULL,
  .shufflekeys = NULL,
  .num_partitions = NULL,
  .remote = NULL
)

## S3 method for class 'tbl_kusto_abstract'
left_join(
  x,
  y,
  by = NULL,
  copy = NULL,
  suffix = c(".x", ".y"),
  ...,
  keep = NULL,
  .strategy = NULL,
  .shufflekeys = NULL,
  .num_partitions = NULL,
  .remote = NULL
)

## S3 method for class 'tbl_kusto_abstract'
right_join(
  x,
  y,
  by = NULL,
  copy = NULL,
  suffix = c(".x", ".y"),
  ...,
  keep = NULL,
  .strategy = NULL,
  .shufflekeys = NULL,
  .num_partitions = NULL,
  .remote = NULL
)

## S3 method for class 'tbl_kusto_abstract'
full_join(
  x,
  y,
  by = NULL,
  copy = NULL,
  suffix = c(".x", ".y"),
  ...,
  keep = NULL,
  .strategy = NULL,
  .shufflekeys = NULL,
  .num_partitions = NULL,
  .remote = NULL
)

## S3 method for class 'tbl_kusto_abstract'
semi_join(
  x,
  y,
  by = NULL,
  copy = NULL,
  ...,
  suffix = c(".x", ".y"),
  .strategy = NULL,
  .shufflekeys = NULL,
  .num_partitions = NULL,
  .remote = NULL
)

## S3 method for class 'tbl_kusto_abstract'
anti_join(
  x,
  y,
  by = NULL,
  copy = 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.
• copy: Needed for agreement with generic. Not otherwise used.
• suffix: The suffixes to use for deduplicating column names.
• ...: Other arguments passed to lower-level functions.
• keep: Needed for agreement with generic. Not otherwise used. Kusto retains keys from both sides of joins.
• .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).

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
## End(Not run)

See Also

dplyr::join