eldenmoon commented on code in PR #24554:
URL: https://github.com/apache/doris/pull/24554#discussion_r1378920533
##########
be/src/vec/common/schema_util.cpp:
##########
@@ -129,164 +139,254 @@ bool is_conversion_required_between_integers(FieldType
lhs, FieldType rhs) {
return true;
}
-Status cast_column(const ColumnWithTypeAndName& arg, const DataTypePtr& type,
ColumnPtr* result,
- RuntimeState* state) {
- ColumnsWithTypeAndName arguments;
- if (WhichDataType(type->get_type_id()).is_string()) {
- // Special handle ColumnString, since the original cast logic use
ColumnString's first item
- // as the name of the dest type
- arguments = {arg, {type->create_column_const(1, type->get_name()),
type, ""}};
- } else {
- arguments = {arg, {type->create_column_const_with_default_value(1),
type, ""}};
- }
+Status cast_column(const ColumnWithTypeAndName& arg, const DataTypePtr& type,
ColumnPtr* result) {
+ ColumnsWithTypeAndName arguments {
+ arg, {type->create_column_const_with_default_value(1), type,
type->get_name()}};
auto function = SimpleFunctionFactory::instance().get_function("CAST",
arguments, type);
+ if (!function) {
+ return Status::InternalError("Not found cast function {} to {}",
arg.type->get_name(),
+ type->get_name());
+ }
Block tmp_block {arguments};
- // the 0 position is input argument, the 1 position is to type argument,
the 2 position is result argument
vectorized::ColumnNumbers argnum;
argnum.emplace_back(0);
argnum.emplace_back(1);
size_t result_column = tmp_block.columns();
+ auto ctx = FunctionContext::create_context(nullptr, {}, {});
+ // We convert column string to jsonb type just add a string jsonb field to
dst column instead of parse
+ // each line in original string column.
+ ctx->set_string_as_jsonb_string(true);
Review Comment:
可能不能作为函数参数， 这个不希望用户带下来。而且cast函数只有两个参数即源column和目标类型。
##########
be/src/vec/common/schema_util.cpp:
##########
@@ -129,164 +139,254 @@ bool is_conversion_required_between_integers(FieldType
lhs, FieldType rhs) {
return true;
}
-Status cast_column(const ColumnWithTypeAndName& arg, const DataTypePtr& type,
ColumnPtr* result,
- RuntimeState* state) {
- ColumnsWithTypeAndName arguments;
- if (WhichDataType(type->get_type_id()).is_string()) {
- // Special handle ColumnString, since the original cast logic use
ColumnString's first item
- // as the name of the dest type
- arguments = {arg, {type->create_column_const(1, type->get_name()),
type, ""}};
- } else {
- arguments = {arg, {type->create_column_const_with_default_value(1),
type, ""}};
- }
+Status cast_column(const ColumnWithTypeAndName& arg, const DataTypePtr& type,
ColumnPtr* result) {
+ ColumnsWithTypeAndName arguments {
+ arg, {type->create_column_const_with_default_value(1), type,
type->get_name()}};
auto function = SimpleFunctionFactory::instance().get_function("CAST",
arguments, type);
+ if (!function) {
+ return Status::InternalError("Not found cast function {} to {}",
arg.type->get_name(),
+ type->get_name());
+ }
Block tmp_block {arguments};
- // the 0 position is input argument, the 1 position is to type argument,
the 2 position is result argument
vectorized::ColumnNumbers argnum;
argnum.emplace_back(0);
argnum.emplace_back(1);
size_t result_column = tmp_block.columns();
+ auto ctx = FunctionContext::create_context(nullptr, {}, {});
+ // We convert column string to jsonb type just add a string jsonb field to
dst column instead of parse
+ // each line in original string column.
+ ctx->set_string_as_jsonb_string(true);
Review Comment:
可能不能作为函数参数， 这个不希望用户带下来。而且cast函数只有两个参数即源column和目标类型。
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