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

Example 11 with JdbcColumnHandle

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

the class ImplementAvgFloatingPoint 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(aggregateFunction.getOutputType() == columnHandle.getColumnType());
    return Optional.of(new JdbcExpression(format("avg(%s)", context.rewriteExpression(argument).orElseThrow()), columnHandle.getJdbcTypeHandle()));
}

Example 12 with JdbcColumnHandle

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

the class ImplementCorr method rewrite.

@Override
public Optional<JdbcExpression> rewrite(AggregateFunction aggregateFunction, Captures captures, RewriteContext<String> context) {
    List<Variable> arguments = captures.get(ARGUMENTS);
    verify(arguments.size() == 2);
    Variable argument1 = arguments.get(0);
    Variable argument2 = arguments.get(1);
    JdbcColumnHandle columnHandle1 = (JdbcColumnHandle) context.getAssignment(argument1.getName());
    verify(aggregateFunction.getOutputType().equals(columnHandle1.getColumnType()));
    return Optional.of(new JdbcExpression(format("corr(%s, %s)", context.rewriteExpression(argument1).orElseThrow(), context.rewriteExpression(argument2).orElseThrow()), columnHandle1.getJdbcTypeHandle()));
}

Example 13 with JdbcColumnHandle

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

the class ImplementCountDistinct 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(aggregateFunction.getOutputType() == BIGINT);
    boolean isCaseSensitiveType = columnHandle.getColumnType() instanceof CharType || columnHandle.getColumnType() instanceof VarcharType;
    if (aggregateFunction.isDistinct() && !isRemoteCollationSensitive && isCaseSensitiveType) {
        // Remote database is case insensitive or compares values differently from Trino
        return Optional.empty();
    }
    return Optional.of(new JdbcExpression(format("count(DISTINCT %s)", context.rewriteExpression(argument).orElseThrow()), bigintTypeHandle));
}

Example 14 with JdbcColumnHandle

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

the class ImplementCovarianceSamp method rewrite.

@Override
public Optional<JdbcExpression> rewrite(AggregateFunction aggregateFunction, Captures captures, RewriteContext<String> context) {
    List<Variable> arguments = captures.get(ARGUMENTS);
    verify(arguments.size() == 2);
    Variable argument1 = arguments.get(0);
    Variable argument2 = arguments.get(1);
    JdbcColumnHandle columnHandle1 = (JdbcColumnHandle) context.getAssignment(argument1.getName());
    verify(aggregateFunction.getOutputType().equals(columnHandle1.getColumnType()));
    return Optional.of(new JdbcExpression(format("covar_samp(%s, %s)", context.rewriteExpression(argument1).orElseThrow(), context.rewriteExpression(argument2).orElseThrow()), columnHandle1.getJdbcTypeHandle()));
}

Example 15 with JdbcColumnHandle

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

the class ImplementRegrIntercept method rewrite.

@Override
public Optional<JdbcExpression> rewrite(AggregateFunction aggregateFunction, Captures captures, RewriteContext<String> context) {
    List<Variable> arguments = captures.get(ARGUMENTS);
    verify(arguments.size() == 2);
    Variable argument1 = arguments.get(0);
    Variable argument2 = arguments.get(1);
    JdbcColumnHandle columnHandle1 = (JdbcColumnHandle) context.getAssignment(argument1.getName());
    verify(aggregateFunction.getOutputType().equals(columnHandle1.getColumnType()));
    return Optional.of(new JdbcExpression(format("regr_intercept(%s, %s)", context.rewriteExpression(argument1).orElseThrow(), context.rewriteExpression(argument2).orElseThrow()), columnHandle1.getJdbcTypeHandle()));
}