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[FEAT MERGE] Functional_index

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This commit is contained in:
obdev
2023-04-27 11:11:23 +00:00
committed by ob-robot
parent a52d8673b2
commit c5756c1799
370 changed files with 1728 additions and 821 deletions
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179
src/sql/optimizer/ob_optimizer_util.cpp
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@ -5637,7 +5637,7 @@ int ObOptimizerUtil::is_order_by_match(const ObIArray<OrderItem> &ordering,
int ObOptimizerUtil::is_lossless_column_conv(const ObRawExpr *expr, bool &is_lossless)
{
int ret = OB_SUCCESS;
int ret = OB_SUCCESS;
is_lossless = false;
const ObRawExpr *child_expr = NULL;
if (OB_ISNULL(expr)) {
@ -5648,87 +5648,110 @@ int ret = OB_SUCCESS;
} else if (OB_ISNULL(child_expr = expr->get_param_expr(4))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else {
ObExprResType child_type = child_expr->get_result_type();
ObObjTypeClass child_tc = child_type.get_type_class();
ObExprResType dst_type = expr->get_result_type();
ObObjTypeClass dst_tc = dst_type.get_type_class();
ObAccuracy dst_acc = dst_type.get_accuracy();
if (!is_oracle_mode()) {
// mysql模式允许的无损类型转换可以参考
if (ObIntTC == child_tc || ObUIntTC == child_tc) {
if (child_type.get_type() == dst_type.get_type()) {
is_lossless = true;
} else if (ObNumberTC == dst_tc) {
ObAccuracy lossless_acc = child_type.get_accuracy();
if ((dst_acc.get_scale() >= 0 &&
dst_acc.get_precision() - dst_acc.get_scale() >= lossless_acc.get_precision()) ||
(-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale())) {
is_lossless = true;
}
}
} else if (ObFloatTC == child_tc || ObDoubleTC == child_tc) {
if (child_tc == dst_tc) {
ObAccuracy lossless_acc = child_type.get_accuracy();
if (dst_acc.get_precision() >= lossless_acc.get_precision() &&
dst_acc.get_scale() == lossless_acc.get_scale()) {
is_lossless = true;
}
}
} else if (ObTimestampType == child_type.get_type() || ObDateTimeType == child_type.get_type()) {
if (ObDateTimeType == dst_type.get_type() || ObTimestampType == dst_type.get_type()) {
if (child_type.get_accuracy().get_precision() == dst_acc.get_precision() &&
child_type.get_accuracy().get_scale() == dst_acc.get_scale()) {
is_lossless = true;
}
}
} else if (ObDateTC == child_tc || ObTimeTC == child_tc) {
if (child_tc == dst_tc || ObDateTimeType == dst_type.get_type() || ObTimestampType == dst_type.get_type()) {
if (-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale()) {
is_lossless = true;
}
}
} else if (ObYearTC == child_tc) {
if (ObNumberTC == dst_tc) {
ObAccuracy lossless_acc = ObAccuracy::DDL_DEFAULT_ACCURACY2[ObCompatibilityMode::MYSQL_MODE][child_type.get_type()];
if (dst_acc.get_precision() - dst_acc.get_scale() >= lossless_acc.get_precision() - lossless_acc.get_scale()) {
is_lossless = true;
}
} else if (ObDoubleTC == dst_tc) {
if (-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale()) {
is_lossless = true;
}
}
// varchar, varbinnary
} else if (ObCharType == child_type.get_type() || ObVarcharType == child_type.get_type()) {
//in mysql c1 varchar(x) as (func(y)) can not insert data makes length(fun(y)) > x
if (child_type.get_type() == dst_type.get_type() &&
dst_type.get_obj_meta().get_collation_type() == child_type.get_obj_meta().get_collation_type()) {
is_lossless = true;
}
}
} else {
if (ObNumberTC == child_tc || ObIntTC == child_tc || ObUIntTC == child_tc) {
if (child_tc == dst_tc || ObNumberTC == dst_tc) {
ObAccuracy lossless_acc = child_type.get_accuracy();
if ((dst_acc.get_scale() >= 0 &&
dst_acc.get_precision() - dst_acc.get_scale() >= lossless_acc.get_precision()) ||
(-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale())) {
is_lossless = true;
}
}
} else if (ObCharType == child_type.get_type() || ObVarcharType == child_type.get_type()) {
//in oracle creating table ... c1 varchar(x) as (func(y)) will ensure that x>=length(y);
if (child_type.get_type() == dst_type.get_type() &&
dst_type.get_obj_meta().get_collation_type() == child_type.get_obj_meta().get_collation_type()) {
is_lossless = true;
}
}
}
} else {
is_lossless = is_lossless_type_conv(child_expr->get_result_type(), expr->get_result_type());
}
return ret;
}
bool ObOptimizerUtil::is_lossless_type_conv(const ObExprResType &child_type, const ObExprResType &dst_type) {
bool is_lossless = false;
ObObjTypeClass child_tc = child_type.get_type_class();
ObObjTypeClass dst_tc = dst_type.get_type_class();
ObAccuracy dst_acc = dst_type.get_accuracy();
if (child_type.get_type() == dst_type.get_type() &&
(child_type.get_accuracy().get_precision() == dst_acc.get_precision() || -1 == dst_acc.get_precision()) &&
(child_type.get_accuracy().get_scale() == dst_acc.get_scale() || -1 == dst_acc.get_scale())) {
if (ob_is_string_type(child_type.get_type())) {
if (dst_type.get_obj_meta().get_collation_type() == child_type.get_obj_meta().get_collation_type() &&
(child_type.get_accuracy().get_length() <= dst_acc.get_length() || -1 == dst_acc.get_length())) {
is_lossless = true;
}
} else if (ob_is_numeric_type(child_type.get_type()) || ob_is_temporal_type(child_type.get_type()) || ob_is_otimestampe_tc(child_type.get_type())) {
is_lossless = true;
}
}
if (is_lossless) {
//do nothing
} else if (!is_oracle_mode()) {
// mysql模式允许的无损类型转换可以参考
if (ObIntTC == child_tc || ObUIntTC == child_tc || ObNumberTC == child_tc) {
if (child_type.get_type() == dst_type.get_type() && ObNumberTC != child_tc) {
is_lossless = true;
} else if (ObNumberTC == dst_tc) {
ObAccuracy lossless_acc = child_type.get_accuracy();
if ((dst_acc.get_scale() >= 0 &&
dst_acc.get_precision() - dst_acc.get_scale() >= lossless_acc.get_precision()) ||
(-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale())) {
is_lossless = true;
}
}
} else if (ObFloatTC == child_tc || ObDoubleTC == child_tc) {
if (child_tc == dst_tc || ObDoubleTC == dst_tc) {
ObAccuracy lossless_acc = child_type.get_accuracy();
if (-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale()) {
is_lossless = true;
} else if (dst_acc.get_precision() >= lossless_acc.get_precision() &&
dst_acc.get_scale() >= lossless_acc.get_scale()) {
is_lossless = true;
}
}
} else if (ObTimestampType == child_type.get_type() || ObDateTimeType == child_type.get_type()) {
if (ObDateTimeType == dst_type.get_type() || ObTimestampType == dst_type.get_type()) {
if (child_type.get_accuracy().get_precision() == dst_acc.get_precision() &&
child_type.get_accuracy().get_scale() == dst_acc.get_scale()) {
is_lossless = true;
}
}
} else if (ObDateTC == child_tc || ObTimeTC == child_tc) {
if (child_tc == dst_tc || ObDateTimeType == dst_type.get_type() || ObTimestampType == dst_type.get_type()) {
if (-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale()) {
is_lossless = true;
}
}
} else if (ObYearTC == child_tc) {
if (ObNumberTC == dst_tc) {
ObAccuracy lossless_acc = ObAccuracy::DDL_DEFAULT_ACCURACY2[ObCompatibilityMode::MYSQL_MODE][child_type.get_type()];
if (dst_acc.get_precision() - dst_acc.get_scale() >= lossless_acc.get_precision() - lossless_acc.get_scale()) {
is_lossless = true;
}
} else if (ObDoubleTC == dst_tc) {
if (-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale()) {
is_lossless = true;
}
} else if (child_tc == dst_tc) {
is_lossless = true;
}
// varchar, varbinnary
} else if (ObCharType == child_type.get_type() || ObVarcharType == child_type.get_type()) {
//in mysql c1 varchar(x) as (func(y)) can not insert data makes length(fun(y)) > x
if (child_type.get_type() == dst_type.get_type() &&
dst_type.get_obj_meta().get_collation_type() == child_type.get_obj_meta().get_collation_type()) {
is_lossless = true;
}
}
} else {
if (ObNumberTC == child_tc || ObIntTC == child_tc || ObUIntTC == child_tc) {
if (child_tc == dst_tc || ObNumberTC == dst_tc) {
ObAccuracy lossless_acc = child_type.get_accuracy();
if ((dst_acc.get_scale() >= 0 &&
dst_acc.get_precision() - dst_acc.get_scale() >= lossless_acc.get_precision()) ||
(-1 == dst_acc.get_precision() && -1 == dst_acc.get_scale()) ||
(-1 == dst_acc.get_precision() && -85 == dst_acc.get_scale())) {
is_lossless = true;
}
}
} else if (ObCharType == child_type.get_type() || ObVarcharType == child_type.get_type() || ObNCharType == child_type.get_type() || ObNVarchar2Type == child_type.get_type()) {
//in oracle creating table ... c1 varchar(x) as (func(y)) will ensure that x>=length(y);
if (child_type.get_type() == dst_type.get_type() &&
dst_type.get_obj_meta().get_collation_type() == child_type.get_obj_meta().get_collation_type()) {
is_lossless = true;
}
}
}
return is_lossless;
}
int ObOptimizerUtil::is_lossless_column_cast(const ObRawExpr *expr, bool &is_lossless)
{
int ret = OB_SUCCESS;