anonymous_namespace{WindowExpressionRewrite.cpp} Namespace Reference

Functions
bool	matches_else_null (const Analyzer::CaseExpr *case_expr)
bool	matches_gt_bigint_zero (const Analyzer::BinOper *window_gt_zero)
bool	window_sum_and_count_match (const Analyzer::WindowFunction *sum_window_expr, const Analyzer::WindowFunction *count_window_expr)
bool	is_sum_kind (const SqlWindowFunctionKind kind)

Function Documentation

bool anonymous_namespace{WindowExpressionRewrite.cpp}::is_sum_kind

(

const SqlWindowFunctionKind

kind

)

Definition at line 47 of file WindowExpressionRewrite.cpp.

References SUM, and SUM_INTERNAL.

Referenced by rewrite_sum_window().

                                                   {
  return kind == SqlWindowFunctionKind::SUM_INTERNAL ||
         kind == SqlWindowFunctionKind::SUM;
}

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bool anonymous_namespace{WindowExpressionRewrite.cpp}::matches_else_null

(

const Analyzer::CaseExpr *

case_expr

)

Definition at line 22 of file WindowExpressionRewrite.cpp.

References Analyzer::CaseExpr::get_else_expr(), and Analyzer::Constant::get_is_null().

Referenced by rewrite_sum_window().

                                                          {
  const auto else_null =
      dynamic_cast<const Analyzer::Constant*>(case_expr->get_else_expr());
  return else_null && else_null->get_is_null();
}

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bool anonymous_namespace{WindowExpressionRewrite.cpp}::matches_gt_bigint_zero

(

const Analyzer::BinOper *

window_gt_zero

)

Definition at line 29 of file WindowExpressionRewrite.cpp.

References Analyzer::BinOper::get_optype(), Analyzer::BinOper::get_right_operand(), SQLTypeInfo::get_type(), Analyzer::Expr::get_type_info(), kBIGINT, and kGT.

Referenced by rewrite_sum_window().

                                                                   {
  if (window_gt_zero->get_optype() != kGT) {
    return false;
  }
  const auto zero =
      dynamic_cast<const Analyzer::Constant*>(window_gt_zero->get_right_operand());
  return zero && zero->get_type_info().get_type() == kBIGINT &&
         zero->get_constval().bigintval == 0;
}

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bool anonymous_namespace{WindowExpressionRewrite.cpp}::window_sum_and_count_match	(	const Analyzer::WindowFunction *	sum_window_expr,
		const Analyzer::WindowFunction *	count_window_expr
	)

Definition at line 41 of file WindowExpressionRewrite.cpp.

References CHECK_EQ, expr_list_match(), SQLTypeInfo::get_type(), Analyzer::Expr::get_type_info(), Analyzer::WindowFunction::getArgs(), and kBIGINT.

Referenced by rewrite_sum_window().

                                                                                 {
  CHECK_EQ(count_window_expr->get_type_info().get_type(), kBIGINT);
  return expr_list_match(sum_window_expr->getArgs(), count_window_expr->getArgs());
}

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