View source: R/QueryCondition.R
parse_query_condition | R Documentation |
The grammar for query conditions is at present constraint to six operators and three boolean types.
parse_query_condition(
expr,
ta = NULL,
debug = FALSE,
strict = TRUE,
use_int64 = FALSE
)
expr |
An expression that is understood by the TileDB grammar for query conditions. |
ta |
An optional tiledb_array object that the query condition is applied to |
debug |
A boolean toogle to enable more verbose operations, defaults to 'FALSE'. |
strict |
A boolean toogle to, if set, errors if a non-existing attribute is selected or filtered on, defaults to 'TRUE'; if 'FALSE' a warning is shown by execution proceeds. |
use_int64 |
A boolean toggle to switch to |
A tiledb_query_condition
object
## Not run:
uri <- "mem://airquality" # change to on-disk for persistence
fromDataFrame(airquality, uri, col_index=c("Month", "Day")) # dense array
## query condition on dense array requires extended=FALSE
tiledb_array(uri, return_as="data.frame", extended=FALSE,
query_condition=parse_query_condition(Temp > 90))[]
## End(Not run)
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