Account Balance Query (Transaction Amounts) about history-tools

[tbfleming]

The PostgreSQL tables store the action and state data in the blockchain's native (binary) format. This saves space, but makes direct queries difficult on fields contained within that data. Wasmql addressed that need, but performs much worse on PostgreSQL than on rocksdb. Wasmql is in the middle of an incompatible rewrite. The new version of wasmql will drop PostgreSQL support and work exclusively on rocksdb because of its performance gains. The new version of wasmql also will have significant differences from the current interfaces, so we don't recommend using wasmql at this time.

We plan to promote fill-pg to release after some changes, but acknowledge that it doesn't handle contract-specific queries well. EOSIO Token is contract-specific.

[ek1977]

Are the resources that we could use to parse the necessary binary fields? We are primary working in Python but could use something else if we need to. It would be acceptable for use to identify all the required transactions, convert them and then do the calculation, if we can get them converted. Thank you for your continued assistance.

[tbfleming]

We have 2 libraries which can do the conversion: eosjs and abieos. abieos is C++, but has a pure C interface designed for hooking up to other languages. It should be compatible with Python's ctypes, but I don't know if anyone has tried yet.

[ek1977]

Thanks. I'll take a look.