329 lines
14 KiB
C++
329 lines
14 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_REWRITE
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#include <gtest/gtest.h>
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#include "lib/json/ob_json.h"
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#include "lib/json/ob_json_print_utils.h" // for SJ
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#include "lib/allocator/ob_mod_define.h"
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#include "lib/allocator/page_arena.h"
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#include "lib/oblog/ob_log.h"
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#include "sql/resolver/expr/ob_raw_expr_util.h"
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#include "sql/resolver/dml/ob_select_stmt.h"
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#include "sql/rewrite/ob_subquery_unnested_rewrite.h"
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#include "sql/code_generator/ob_expr_generator_impl.h"
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#include "sql/code_generator/ob_column_index_provider.h"
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#include "sql/engine/expr/ob_sql_expression.h"
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#include "sql/engine/ob_exec_context.h"
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#include "sql/engine/ob_physical_plan_ctx.h"
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using namespace oceanbase::sql;
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using namespace oceanbase::common;
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namespace test
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{
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static const int64_t MAX_OP_NUM = 32;
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#define MAKE_RAW_EXPR_FROM_STR(str, expr) \
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({ \
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ObArray<ObAggFunRawExpr*> aggr_exprs; \
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ObArray<ObWinFunRawExpr*> win_exprs; \
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ObArray<ObUDFInfo> udf_info; \
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ret = ObRawExprUtils::make_raw_expr_from_str(str, \
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strlen(str), \
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allocator, \
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ctx, \
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expr, \
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columns, \
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sys_vars, \
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&sub_query_info, \
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aggr_exprs, \
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win_exprs, \
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udf_info); \
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ret; \
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})
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// calc ObRawExpr with an empty row
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#define CALC_RAW_EXPR(raw_expr, row, result) \
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({ \
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RowDesc row_desc; \
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ObSqlExpression sql_expr; \
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sql_expr.set_str_buf(&allocator); \
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ObExprGeneratorImpl expr_generator(row_desc); \
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expr_generator.generate(raw_expr, sql_expr); \
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ObExecContext exec_ctx; \
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if (OB_FAIL(exec_ctx.init_phy_op(MAX_OP_NUM))) { \
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LOG_WARN("fail to init exec_ctx", "MAX_OP_NUM", static_cast<int64_t>(MAX_OP_NUM), K(ret)); \
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} else if (OB_FAIL(exec_ctx.create_physical_plan_ctx())) { \
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LOG_WARN("fail to create_physical_plan_ctx", K(ret)); \
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} else { \
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ObExprCtx expr_ctx; \
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expr_ctx.phy_plan_ctx_ = exec_ctx.get_physical_plan_ctx(); \
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expr_ctx.calc_buf_ = &allocator; \
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if (OB_FAIL(sql_expr.calc(expr_ctx, row, result))) { \
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LOG_WARN("fail to calc expr", K(row), K(ret)); \
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} \
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} \
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ret; \
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})
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class TestCombineLimitExpr: public ::testing::Test
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{
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public:
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TestCombineLimitExpr() {}
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virtual ~TestCombineLimitExpr() {}
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virtual void SetUp() {}
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virtual void TearDown() {}
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private:
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// disallow copy and assign
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TestCombineLimitExpr(const TestCombineLimitExpr &other);
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TestCombineLimitExpr& operator=(const TestCombineLimitExpr &ohter);
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};
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TEST_F(TestCombineLimitExpr, basic_test)
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{
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int ret = OB_SUCCESS;
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ObExprOperatorGFactory::get_instance()->init();
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ObSubqueryNestedRewrite rewriter;
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// mock params
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// stmts
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ObArenaAllocator allocator(ObModIds::TEST);
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void *select_ptr = allocator.alloc(sizeof(ObSelectStmt));
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void *child_ptr = allocator.alloc(sizeof(ObSelectStmt));
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ObSelectStmt *select_stmt = new(select_ptr) ObSelectStmt;
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ObSelectStmt *child_stmt = new(child_ptr) ObSelectStmt;
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// offset/limit exprs
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ObArray<ObQualifiedName> columns;
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ObArray<ObVarInfo> sys_vars;
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ObArray<ObSubQueryInfo> sub_query_info;
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ObExprResolveContext ctx(allocator);
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ctx.connection_charset_ = ObCharset::get_default_charset();
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ctx.dest_collation_ = ObCharset::get_default_collation(ctx.connection_charset_);
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// for calc
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ObNewRow row;
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ObObj result;
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ObRawExpr *inner_offset_expr = NULL; // a
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ObRawExpr *inner_limit_expr = NULL; // b
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ObRawExpr *outer_offset_expr = NULL; // c
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ObRawExpr *outer_limit_expr = NULL; // d
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const char* inner_offset = "1";
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const char* inner_limit = "10";
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const char* outer_offset = "2";
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const char* outer_limit = "6";
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// result
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ObRawExpr *result_offset = NULL;
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ObRawExpr *result_limit = NULL;
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// (inner limit a,b) outer limit c,d
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// b or c may be NULL
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/***************************************************************************/
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// b = NULL, c = NULL
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// result_offset = a
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// result_limit = d
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inner_offset_expr = NULL; // a
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inner_limit_expr = NULL; // b
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outer_offset_expr = NULL; // c
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outer_limit_expr = NULL; // d
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// a, d
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(inner_offset_expr == result_offset);
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EXPECT_TRUE(outer_limit_expr == result_limit);
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/***************************************************************************/
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// b = NULL, c != NULL
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// a = NULL, result_offset = c
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// a != NULL, result_offset = a + c
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// result_limit = d
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inner_offset_expr = NULL; // a
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inner_limit_expr = NULL; // b
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outer_offset_expr = NULL; // c
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outer_limit_expr = NULL; // d
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// b = NULL
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inner_limit_expr = NULL;
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// c != NULL
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MAKE_RAW_EXPR_FROM_STR(outer_offset, outer_offset_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// a = NULL
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inner_offset_expr = NULL;
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// c, d
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(outer_offset_expr == result_offset);
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EXPECT_TRUE(outer_limit_expr == result_limit);
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//---------------------------------------------------------------------------
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// a != NULL
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MAKE_RAW_EXPR_FROM_STR(inner_offset, inner_offset_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// a+c, d
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EXPECT_TRUE(OB_SUCC(ret));
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CALC_RAW_EXPR(*result_offset, row, result);
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(3 == result.get_int());
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EXPECT_TRUE(outer_limit_expr == result_limit);
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/***************************************************************************/
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// b != NULL, c = NULL
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// result_offset = a
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// d = NULL, result_limit = b
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// d != NULL, result_limist = min(b, d)
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inner_offset_expr = NULL; // a
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inner_limit_expr = NULL; // b
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outer_offset_expr = NULL; // c
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outer_limit_expr = NULL; // d
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// b != NULL
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MAKE_RAW_EXPR_FROM_STR(inner_limit, inner_limit_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// c = NULL
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outer_offset_expr = NULL;
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// d = NULL
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outer_limit_expr = NULL;
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// a, b
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(inner_offset_expr == result_offset);
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EXPECT_TRUE(inner_limit_expr == result_limit);
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//---------------------------------------------------------------------------
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// d != NULL
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MAKE_RAW_EXPR_FROM_STR(outer_limit, outer_limit_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// a, min(b, d)
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(inner_offset_expr == result_offset);
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CALC_RAW_EXPR(*result_limit, row, result);
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(6 == result.get_int());
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/***************************************************************************/
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// b != NULL, c != NULL
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// if b >= c
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// a = NULL, result_offset = c
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// a != NULL, result_offset = a+c
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// d = NULL, result_limit = b-c
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// d != NULL, result_limit = min(b-c, d)
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// else
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// result_offset = 0
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// result_limit = 0
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inner_offset_expr = NULL; // a
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inner_limit_expr = NULL; // b
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outer_offset_expr = NULL; // c
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outer_limit_expr = NULL; // d
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// b != NULL
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MAKE_RAW_EXPR_FROM_STR(inner_limit, inner_limit_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// c != NULL
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MAKE_RAW_EXPR_FROM_STR(outer_offset, outer_offset_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// a = NULL, d = NULL
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inner_offset_expr = NULL;
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outer_limit_expr = NULL;
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// c, b-c
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EXPECT_TRUE(OB_SUCC(ret));
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// LOG_INFO("raw expr", K(*result_offset));
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// LOG_INFO("raw expr", K(*result_limit));
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// LOG_INFO("result_offset", K(*result_offset));
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CALC_RAW_EXPR(*result_offset, row, result);
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(2 == result.get_int());
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CALC_RAW_EXPR(*result_limit, row, result);
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(8 == result.get_int());
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//---------------------------------------------------------------------------
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// a != NULL
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MAKE_RAW_EXPR_FROM_STR(inner_offset, inner_offset_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// b != NULL
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MAKE_RAW_EXPR_FROM_STR(inner_limit, inner_limit_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// c != NULL
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MAKE_RAW_EXPR_FROM_STR(outer_offset, outer_offset_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// d != NULL
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MAKE_RAW_EXPR_FROM_STR(outer_limit, outer_limit_expr);
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EXPECT_TRUE(OB_SUCC(ret));
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// test
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child_stmt->set_limit_offset(inner_limit_expr, inner_offset_expr);
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select_stmt->set_limit_offset(outer_limit_expr, outer_offset_expr);
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ret = rewriter.combine_limit_expr(&allocator,
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select_stmt,
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child_stmt,
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result_offset,
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result_limit);
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// a + c, min(b-c, d)
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EXPECT_TRUE(OB_SUCC(ret));
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CALC_RAW_EXPR(*result_offset, row, result);
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(3 == result.get_int());
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CALC_RAW_EXPR(*result_limit, row, result);
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EXPECT_TRUE(OB_SUCC(ret));
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EXPECT_TRUE(6 == result.get_int());
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}
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} // end test
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int main(int argc, char **argv)
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{
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oceanbase::common::ObLogger::get_logger().set_log_level("INFO");
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::testing::InitGoogleTest(&argc,argv);
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return RUN_ALL_TESTS();
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}
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