exosql v0.2.40 ExoSQL.Expr View Source
Expression executor.
Requires a simplified expression from simplify_expr_columns
that converts
columns names to column positions, and then use as:
iex> row = [1,2,3,4,5]
iex> expr = {:op, {"*", {:column, 1}, {:column, 2}}}
iex> ExoSQL.Expr.run_expr(expr, row)
6
Link to this section Summary
Link to this section Functions
Try to return matching types.
- If any is datetime, return datetimes
- If any is number, return numbers
- Otherwise, as is
Try to simplify expressions.
Will return always a valid expression.
If any subexpression is of any of these types, the expression will be the maximum complxity.
This makes for example to simplify:
{:list, [lit: 1, lit: 2]} -> {:lit, [1,2]}