[bugfix] possible postgresql logical replication error: wrong type conversion

[takakawa]

Changelog category (leave one):

• Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

• Fix possible postgresql logical replication conversion_error when using MaterializedPostgreSQL

Documentation entry for user-facing changes

2023.08.14 20:16:59.971005 [ 4326 ] {} <Error> void DB::DatabaseMaterializedPostgreSQL::startSynchronization(): std::exception. Code: 1001, type: pqxx::conversion_error, e.what() = Could not convert string to numeric value: 'male'., Stack trace (when copying this message, always include the lines below):

0. ./build_docker/../contrib/libpqxx/src/except.cxx:98: pqxx::internal::float_traits<double>::from_string(std::__1::basic_string_view<char, std::__1::char_traits<char> >) @ 0x16b8cf0a in /usr/lib/debug/usr/bin/clickhouse.debug
1. ./build_docker/../src/Common/PODArray.h:436: DB::insertPostgreSQLValue(DB::IColumn&, std::__1::basic_string_view<char, std::__1::char_traits<char> >, DB::ExternalResultDescription::ValueType, std::__1::shared_ptr<DB::IDataType const>, std::__1::unordered_map<unsigned long, DB::PostgreSQLArrayInfo, std::__1::hash<unsigned long>, std::__1::equal_to<unsigned long>, std::__1::allocator<std::__1::pair<unsigned long const, DB::PostgreSQLArrayInfo> > >&, unsigned long) @ 0x11b740d2 in /usr/lib/debug/usr/bin/clickhouse.debug
2. ./build_docker/../src/Processors/Transforms/PostgreSQLSource.cpp:156: DB::PostgreSQLSource<pqxx::transaction<(pqxx::isolation_level)1, (pqxx::write_policy)0> >::generate() @ 0x78b6e39 in /usr/lib/debug/usr/bin/clickhouse.debug
3. ./build_docker/../src/Processors/Chunk.h:90: DB::ISource::tryGenerate() @ 0x12fe9675 in /usr/lib/debug/usr/bin/clickhouse.debug
4. ./build_docker/../contrib/libcxx/include/optional:321: DB::ISource::work() @ 0x12fe9206 in /usr/lib/debug/usr/bin/clickhouse.debug
5. ./build_docker/../src/Processors/Executors/ExecutionThreadContext.cpp:0: DB::ExecutionThreadContext::executeTask() @ 0x13004ce6 in /usr/lib/debug/usr/bin/clickhouse.debug
6. ./build_docker/../src/Processors/Executors/PipelineExecutor.cpp:228: DB::PipelineExecutor::executeStepImpl(unsigned long, std::__1::atomic<bool>*) @ 0x12ff94bc in /usr/lib/debug/usr/bin/clickhouse.debug
7. ./build_docker/../contrib/libcxx/include/__memory/shared_ptr.h:702: DB::PipelineExecutor::executeImpl(unsigned long) @ 0x12ff7ed9 in /usr/lib/debug/usr/bin/clickhouse.debug

[takakawa]

there is no guarantee that the SQL below get the same column order with real table data.

 "SELECT attname AS name, format_type(atttypid, atttypmod) AS type, "
           "attnotnull AS not_null, attndims AS dims, atttypid as type_id, atttypmod as type_modifier "
           "FROM pg_attribute "
           "WHERE attrelid = (SELECT oid FROM pg_class WHERE {}) "
           "AND NOT attisdropped AND attnum > 0

[robot-clickhouse-ci-2]

This is an automated comment for commit 09f263e with description of existing statuses. It's updated for the latest CI running

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[alexey-milovidov]

Please merge with the master branch, as we had a few fixes in the meantime.

[takakawa]

hi, what should I do to with this pull request? Do I need provide more tests reports or something else ?

[alexey-milovidov]

The changes LGTM, let's check again...

[alexey-milovidov]

But it will not allow to have the "bugfix" category without a test. I feel that writing a test will be difficult - let's change to "improvement".

[alexey-milovidov]

I have edited it for better style consistency.

[alexey-milovidov]

@takakawa, thank you for the pull request. It is merged!