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Column.-

-other

Group: Operators
Aliases: minus, subtract, time difference

Documentation​

Element-wise subtraction. Allows to subtract numeric types or compute a difference between two date/time values.

Returns a column with results of subtracting other from each element of self.

Arguments​

  • other: The value to subtract from self. If other is a column, the subtraction is performed pairwise between corresponding elements of self and other.

Examples​

Subtract one column from another.​

      import Standard.Examples

      example_minus = Examples.decimal_column - Examples.integer_column

Subtract a single value from each item in a column.​

      import Standard.Examples

      example_minus = Examples.integer_column - 10

Remarks​

Arithmetic Overflow​

For integer columns, the operation may yield results that will not fit into the range supported by the column. In such case, the in-memory backend will replace such results with Nothing and report a Arithmetic_Overflow warning. The behaviour in Database backends is not specified and will depend on the particular database - it may cause a hard error, the value may be truncated or wrap-around etc.