Examples with Literal com.facebook.presto.sql.tree.Literal used on opensource projects

Example 1 with Literal

use of com.facebook.presto.sql.tree.Literal in project presto by prestodb.

the class SimplifyCountOverConstant method isCountOverConstant.

private static boolean isCountOverConstant(AggregationNode.Aggregation aggregation, Assignments inputs) {
    Signature signature = aggregation.getSignature();
    if (!signature.getName().equals("count") || signature.getArgumentTypes().size() != 1) {
        return false;
    }
    Expression argument = aggregation.getCall().getArguments().get(0);
    if (argument instanceof SymbolReference) {
        argument = inputs.get(Symbol.from(argument));
    }
    return argument instanceof Literal && !(argument instanceof NullLiteral);
}