select: Fetch columns from a population or population model
In edpclient: Empirical Data Platform Client

Description Usage Arguments Value Examples

Fetch specified columns from a population or population model.

1	select(x, target = NULL, where = NULL, rowids = NULL)

`x`	an EDP population from `population(...)` or an EDP population model from `popmod(...)`
`target`	a character vector of column names, defaults to `names(pm)` minus `names(where)`
`where`	a list of conditions to select on; `list(a = "x", c = 3)` means only to return rows where `a` is "x" and `c` is 3.
`rowids`	a list of integer row ids to return. These row ids match the row names returned by `select`. `rowids` is exclusive with `where`.

a data frame with the columns specified in target.

  ## Not run: 
    # similar to SQL "SELECT a, b FROM pm WHERE c = 4;"
    select(pm, c("a", "b"), where = list(c = 4))

    select(pm, c("a", "b"), rowids = c(7, 22))
  
## End(Not run)