7b4c2cabb4
Support running transactional insert operation with new scan framework. eg:
admin set frontend config("enable_new_load_scan_node" = "true");
begin;
insert into tbl1 values(1,2);
insert into tbl1 values(3,4);
insert into tbl1 values(5,6);
commit;
Add some limitation to transactional insert
Do not support non-literal value in insert stmt
Fix some issue about array type:
Forbid cast other non-array type to NESTED array type, it may cause BE crash.
Add getStringValueForArray() method for Expr, to get valid string-formatted array type value.
Add useLocalSessionState=true in regression-test jdbc url
without this config, the jdbc driver will send some init cmd each time it connect to server, such as
select @@session.tx_read_only.
But when we use transactional insert, after begin command, Doris do not support any other type of
stmt except for insert, commit or rollback.
So adding this config to let the jdbc NOT send cmd when connecting.
114 lines
4.5 KiB
C++
114 lines
4.5 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "vec/exprs/vcast_expr.h"
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#include <string_view>
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#include "common/status.h"
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#include "vec/core/field.h"
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#include "vec/data_types/data_type_factory.hpp"
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#include "vec/exprs/vexpr.h"
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#include "vec/functions/simple_function_factory.h"
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namespace doris::vectorized {
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doris::Status VCastExpr::prepare(doris::RuntimeState* state, const doris::RowDescriptor& desc,
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VExprContext* context) {
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RETURN_IF_ERROR_OR_PREPARED(VExpr::prepare(state, desc, context));
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DCHECK_EQ(_children.size(), 1);
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auto child = _children[0];
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const auto& child_name = child->expr_name();
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auto child_column = child->data_type()->create_column();
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// create a const string column
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_target_data_type = _data_type;
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_target_data_type_name = DataTypeFactory::instance().get(_target_data_type);
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_cast_param_data_type = std::make_shared<DataTypeString>();
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_cast_param = _cast_param_data_type->create_column_const(1, _target_data_type_name);
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ColumnsWithTypeAndName argument_template;
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argument_template.reserve(2);
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argument_template.emplace_back(std::move(child_column), child->data_type(), child_name);
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argument_template.emplace_back(_cast_param, _cast_param_data_type, _target_data_type_name);
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_function = SimpleFunctionFactory::instance().get_function(function_name, argument_template,
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_data_type);
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if (_function == nullptr) {
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return Status::NotSupported("Function {} is not implemented", _fn.name.function_name);
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}
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VExpr::register_function_context(state, context);
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_expr_name = fmt::format("(CAST {} TO {})", child_name, _target_data_type_name);
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return Status::OK();
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}
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doris::Status VCastExpr::open(doris::RuntimeState* state, VExprContext* context,
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FunctionContext::FunctionStateScope scope) {
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RETURN_IF_ERROR(VExpr::open(state, context, scope));
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RETURN_IF_ERROR(VExpr::init_function_context(context, scope, _function));
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return Status::OK();
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}
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void VCastExpr::close(doris::RuntimeState* state, VExprContext* context,
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FunctionContext::FunctionStateScope scope) {
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VExpr::close_function_context(context, scope, _function);
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VExpr::close(state, context, scope);
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}
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doris::Status VCastExpr::execute(VExprContext* context, doris::vectorized::Block* block,
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int* result_column_id) {
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// for each child call execute
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int column_id = 0;
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RETURN_IF_ERROR(_children[0]->execute(context, block, &column_id));
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size_t const_param_id = VExpr::insert_param(
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block, {_cast_param, _cast_param_data_type, _target_data_type_name}, block->rows());
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// call function
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size_t num_columns_without_result = block->columns();
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// prepare a column to save result
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block->insert({nullptr, _data_type, _expr_name});
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RETURN_IF_ERROR(_function->execute(context->fn_context(_fn_context_index), *block,
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{static_cast<size_t>(column_id), const_param_id},
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num_columns_without_result, block->rows(), false));
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*result_column_id = num_columns_without_result;
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return Status::OK();
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}
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const std::string& VCastExpr::expr_name() const {
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return _expr_name;
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}
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std::string VCastExpr::debug_string() const {
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std::stringstream out;
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out << "CastExpr(CAST " << _cast_param_data_type->get_name() << " to "
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<< _target_data_type->get_name() << "){";
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bool first = true;
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for (VExpr* input_expr : children()) {
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if (first) {
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first = false;
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} else {
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out << ",";
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}
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out << input_expr->debug_string();
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}
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out << "}";
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return out.str();
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}
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} // namespace doris::vectorized
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