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103 lines
4.2 KiB
C++
103 lines
4.2 KiB
C++
#include <gtest/gtest.h>
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#include <Storages/transformQueryForExternalDatabase.h>
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#include <Parsers/ParserSelectQuery.h>
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#include <Parsers/parseQuery.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/DataTypeDateTime.h>
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#include <Interpreters/Context.h>
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#include <Databases/DatabaseMemory.h>
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#include <Storages/StorageMemory.h>
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#include <Functions/registerFunctions.h>
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using namespace DB;
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/// NOTE How to do better?
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struct State
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{
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Context context{Context::createGlobal()};
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NamesAndTypesList columns{
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{"column", std::make_shared<DataTypeUInt8>()},
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{"apply_id", std::make_shared<DataTypeUInt64>()},
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{"apply_type", std::make_shared<DataTypeUInt8>()},
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{"apply_status", std::make_shared<DataTypeUInt8>()},
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{"create_time", std::make_shared<DataTypeDateTime>()},
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};
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State()
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{
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registerFunctions();
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DatabasePtr database = std::make_shared<DatabaseMemory>("test");
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database->attachTable("table", StorageMemory::create("test", "table", ColumnsDescription{columns}, ConstraintsDescription{}));
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context.makeGlobalContext();
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context.addDatabase("test", database);
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context.setCurrentDatabase("test");
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}
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};
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static State & state()
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{
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static State res;
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return res;
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}
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static void check(const std::string & query, const std::string & expected, const Context & context, const NamesAndTypesList & columns)
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{
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ParserSelectQuery parser;
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ASTPtr ast = parseQuery(parser, query, 1000);
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std::string transformed_query = transformQueryForExternalDatabase(*ast, columns, IdentifierQuotingStyle::DoubleQuotes, "test", "table", context);
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EXPECT_EQ(transformed_query, expected);
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}
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TEST(TransformQueryForExternalDatabase, InWithSingleElement)
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{
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check("SELECT column FROM test.table WHERE 1 IN (1)",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE 1",
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state().context, state().columns);
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check("SELECT column FROM test.table WHERE column IN (1, 2)",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE \"column\" IN (1, 2)",
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state().context, state().columns);
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check("SELECT column FROM test.table WHERE column NOT IN ('hello', 'world')",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE \"column\" NOT IN ('hello', 'world')",
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state().context, state().columns);
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}
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TEST(TransformQueryForExternalDatabase, Like)
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{
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check("SELECT column FROM test.table WHERE column LIKE '%hello%'",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE \"column\" LIKE '%hello%'",
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state().context, state().columns);
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check("SELECT column FROM test.table WHERE column NOT LIKE 'w%rld'",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE \"column\" NOT LIKE 'w%rld'",
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state().context, state().columns);
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}
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TEST(TransformQueryForExternalDatabase, Substring)
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{
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check("SELECT column FROM test.table WHERE left(column, 10) = RIGHT(column, 10) AND SUBSTRING(column FROM 1 FOR 2) = 'Hello'",
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"SELECT \"column\" FROM \"test\".\"table\"",
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state().context, state().columns);
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}
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TEST(TransformQueryForExternalDatabase, MultipleAndSubqueries)
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{
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check("SELECT column FROM test.table WHERE 1 = 1 AND toString(column) = '42' AND column = 42 AND left(column, 10) = RIGHT(column, 10) AND column IN (1, 42) AND SUBSTRING(column FROM 1 FOR 2) = 'Hello' AND column != 4",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE 1 AND (\"column\" = 42) AND (\"column\" IN (1, 42)) AND (\"column\" != 4)",
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state().context, state().columns);
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check("SELECT column FROM test.table WHERE toString(column) = '42' AND left(column, 10) = RIGHT(column, 10) AND column = 42",
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"SELECT \"column\" FROM \"test\".\"table\" WHERE (\"column\" = 42)",
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state().context, state().columns);
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}
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TEST(TransformQueryForExternalDatabase, Issue7245)
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{
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check("select apply_id from test.table where apply_type = 2 and create_time > addDays(toDateTime('2019-01-01 01:02:03'),-7) and apply_status in (3,4)",
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"SELECT \"apply_id\", \"apply_type\", \"apply_status\", \"create_time\" FROM \"test\".\"table\" WHERE (\"apply_type\" = 2) AND (\"create_time\" > '2018-12-25 01:02:03') AND (\"apply_status\" IN (3, 4))",
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state().context, state().columns);
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}
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