RAWSQL_BOOL: from Tableau to SQL

Evaluates a permitted scalar SQL expression with positional substitutions. Below, 8 sample rows go through the calculation and through the SQL, and both return the same numbers.

Calculated field

RAWSQL_BOOL("%1 > 0", [amount])

Sample data

labelquantityamountflag
cedar cedar 6512.8True
ORCHID-west66-7.6False
maple-east670null
willow north6825.3True
birch-birch694.9False
pine/south70-1.2null
ash719True
nullnullnullnull

The same calculation as SQL

SELECT amount > 0 AS result FROM input

Runs the example above.

Result

result
True
False
False
True
True
False
True
null

Same rows from the calculation and from the SQL in DuckDB.

Where a naive translation goes wrong

  • RAWSQL embeds source-dialect SQL; replace the template for the target database.

    Naive SQL

    SELECT amount >= 0 AS result FROM input
    result
    True
    False
    True
    True
    True
    False
    True
    null

    Matches the calculation

    SELECT amount > 0 AS result FROM input
    result
    True
    False
    False
    True
    True
    False
    True
    null

Signature

RAWSQL_BOOL(constant_sql, [argument, ...])