Examples with JdbcExpression io.trino.plugin.jdbc.JdbcExpression used on opensource projects

Example 21 with JdbcExpression

use of io.trino.plugin.jdbc.JdbcExpression in project trino by trinodb.

the class ImplementSqlServerVariance method rewrite.

@Override
public Optional<JdbcExpression> rewrite(AggregateFunction aggregateFunction, Captures captures, RewriteContext<String> context) {
    Variable argument = captures.get(ARGUMENT);
    JdbcColumnHandle columnHandle = (JdbcColumnHandle) context.getAssignment(argument.getName());
    verify(columnHandle.getColumnType().equals(DOUBLE));
    verify(aggregateFunction.getOutputType().equals(DOUBLE));
    return Optional.of(new JdbcExpression(format("VAR(%s)", context.rewriteExpression(argument).orElseThrow()), columnHandle.getJdbcTypeHandle()));
}