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[CP] Fix cume_dist/percent_rank bug

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This commit is contained in:
obdev
2023-09-08 10:40:37 +08:00
committed by ob-robot
parent 4ef22979ef
commit 8bb7c8394f
2 changed files with 16 additions and 6 deletions
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16
src/sql/engine/window_function/ob_window_function_op.cpp
View File

@ -894,8 +894,8 @@ int ObWindowFunctionOp::NonAggrCellRankLike::eval(RowsReader &row_reader,
ObDatum &expr_datum = wf_info_.expr_->locate_datum_for_write(op_.eval_ctx_);
wf_info_.expr_->set_evaluated_flag(op_.eval_ctx_);
if (T_WIN_FUN_PERCENT_RANK == wf_info_.func_type_) {
if (is_oracle_mode()) {
// result will be zero when only one row within frame
if (ob_is_number_tc(wf_info_.expr_->datum_meta_.type_)) {
//in mysql mode, percent rank may return double
if (0 == frame.tail_ - frame.head_) {
number::ObNumber res_nmb;
res_nmb.set_zero();
@ -915,7 +915,7 @@ int ObWindowFunctionOp::NonAggrCellRankLike::eval(RowsReader &row_reader,
expr_datum.set_number(res_nmb);
}
}
} else {
} else if (ObDoubleType == wf_info_.expr_->datum_meta_.type_) {
if (0 == frame.tail_ - frame.head_) {
expr_datum.set_double(0);
} else {
@ -923,6 +923,9 @@ int ObWindowFunctionOp::NonAggrCellRankLike::eval(RowsReader &row_reader,
double denominator= static_cast<double>(frame.tail_ - frame.head_);
expr_datum.set_double(numerator / denominator);
}
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("the result type of window function is unexpected", K(ret), K(wf_info_.expr_->datum_meta_));
}
} else if (lib::is_oracle_mode()) {
number::ObNumber res_nmb;
@ -1002,7 +1005,7 @@ int ObWindowFunctionOp::NonAggrCellCumeDist::eval(RowsReader &row_reader,
}
}
if (OB_SUCC(ret)) {
if (is_oracle_mode()) {
if (ob_is_number_tc(wf_info_.expr_->datum_meta_.type_)) {
// number of row[cur] >= row[:] (whether `>=` or other is depend on ORDER BY)
number::ObNumber numerator;
// total tuple of current window
@ -1022,7 +1025,7 @@ int ObWindowFunctionOp::NonAggrCellCumeDist::eval(RowsReader &row_reader,
expr_datum.set_number(res_nmb);
val = static_cast<ObDatum &>(expr_datum);
}
} else {
} else if (ObDoubleType == wf_info_.expr_->datum_meta_.type_) {
// number of row[cur] >= row[:] (whether `>=` or other is depend on ORDER BY)
double numerator;
// total tuple of current window
@ -1033,6 +1036,9 @@ int ObWindowFunctionOp::NonAggrCellCumeDist::eval(RowsReader &row_reader,
wf_info_.expr_->set_evaluated_flag(op_.eval_ctx_);
expr_datum.set_double(numerator / denominator);
val = static_cast<ObDatum &>(expr_datum);
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("the result type of window function is unexpected", K(ret), K(wf_info_.expr_->datum_meta_));
}
}

6
src/sql/resolver/expr/ob_raw_expr_deduce_type.cpp
View File

@ -2361,7 +2361,11 @@ int ObRawExprDeduceType::visit(ObWinFunRawExpr &expr)
// @TODO : nijia.nj, 细分各种window_funciton
if (T_WIN_FUN_CUME_DIST == expr.get_func_type() ||
T_WIN_FUN_PERCENT_RANK == expr.get_func_type()) {
if (is_oracle_mode()) {
const uint64_t ob_version = GET_MIN_CLUSTER_VERSION();
if (is_oracle_mode() ||
!((ob_version >= CLUSTER_VERSION_2277 && ob_version < CLUSTER_VERSION_3000)
|| (ob_version >= CLUSTER_VERSION_312 && ob_version < CLUSTER_VERSION_3200)
|| ob_version >= CLUSTER_VERSION_3_2_3_0)) {
result_type.set_accuracy(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObNumberType]);
result_type.set_calc_accuracy(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObNumberType]);
result_type.set_number();