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Version: Python

equals

The equals (=) match filter returns rows that are an exact match to the specified value.

Syntax​

columnName = value
columnName == value
  • columnName - the column the filter will search for the matching value.
  • value - the value to match on.

Examples​

The following example returns rows where Color is blue.

from deephaven import new_table
from deephaven.column import string_col, int_col
from deephaven.constants import NULL_INT

source = new_table(
    [
        string_col("Letter", ["A", "C", "F", "B", "E", "D", "A"]),
        int_col("Number", [NULL_INT, 2, 1, NULL_INT, 4, 5, 3]),
        string_col(
            "Color", ["red", "blue", "orange", "purple", "yellow", "pink", "blue"]
        ),
        int_col("Code", [12, 14, 11, NULL_INT, 16, 14, NULL_INT]),
    ]
)


result = source.where(filters=["Color = `blue`"])

The following example returns rows where Color is blue and Code is 14.

from deephaven import new_table
from deephaven.column import string_col, int_col
from deephaven.constants import NULL_INT

source = new_table(
    [
        string_col("Letter", ["A", "C", "F", "B", "E", "D", "A"]),
        int_col("Number", [NULL_INT, 2, 1, NULL_INT, 4, 5, 3]),
        string_col(
            "Color", ["red", "blue", "orange", "purple", "yellow", "pink", "blue"]
        ),
        int_col("Code", [12, 14, 11, NULL_INT, 16, 14, NULL_INT]),
    ]
)

result = source.where(filters=["Color = `blue`", "Code = 14"])

The following example returns rows where Color is blue or Code is 14.

from deephaven import new_table
from deephaven.column import string_col, int_col
from deephaven.constants import NULL_INT

source = new_table(
    [
        string_col("Letter", ["A", "C", "F", "B", "E", "D", "A"]),
        int_col("Number", [NULL_INT, 2, 1, NULL_INT, 4, 5, 3]),
        string_col(
            "Color", ["red", "blue", "orange", "purple", "yellow", "pink", "blue"]
        ),
        int_col("Code", [12, 14, 11, NULL_INT, 16, 14, NULL_INT]),
    ]
)

result = source.where_one_of(filters=["Color = `blue`", "Code = 14"])