ibis.expr.api.ValueExpr.nullif¶
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ValueExpr.
nullif
(value, null_if_expr)¶ Set values to null if they match/equal a particular expression (scalar or array-valued).
Common use to avoid divide-by-zero problems (get NULL instead of INF on divide-by-zero): 5 / expr.nullif(0)
Parameters: value : value expression
Value to modify
null_if_expr : value expression (array or scalar)
Returns: null_if : type of caller