Questions tagged [table]

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Why does using available_primary_key() as scope for a table result in this behaviour?

Scenario: Two tables, each using uint64_t as a primary key Table A rows need to reference rows in Table B Why? Relational database data duplication reasoning etc etc Both table's primary keys are ...
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0answers
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unordered map in eosio-cpp

I want to have an unordered_map inside a table so that I can have O(1) entry and retrieval. Can someone please link me to a snippet which implements that? I am new to cpp.
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Which of the following is better for CRUD in a table?

I have two approaches to save data on blockchain, but I don't know which one is the best from time as well as space complexity perspectives. I want to store key value pairs in a table. First Approach:...
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0answers
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Fetching More Table Rows via RPC

I have a contract with a table in it. I'm querying the contents of the table using the RPC interface, but I'm having trouble getting all the rows. To limit the memory usage of my application, I'm ...
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0answers
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tables of eosio.token are not generated in abi file

I am using "server_version_string": "v1.2.3". And I am trying to compile and customize the eosio.token contract, but the tables are accounts and currency_stats table are not generated in abi file. How ...
1
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1answer
112 views

Is it possible to have a secondary index as unique?

As per title, I'm using a key256 as a datatype for a secondary index on a multi-index table and want it to be unique. Can't find any documentation on it. TIA.
0
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1answer
27 views

Is there way to retrieve auto incremented primary key after submission of transaction?

I'm working on sample dApp application to understand the working of multi_index table in EOS smart contract. I have defined two multi_index table. The primary key of table1 is auto incremented using "...
0
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0answers
31 views

Fetching Rows from Table using Secondary Index with Duplicate Values

If I have a table in a smart contract with a secondary (non-unique) index, and I am retrieving the rows in this table via the RPC get_table_rows endpoint, how can I retrieve all the rows in the table ...
0
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1answer
137 views

How can I create a table in an .hpp for a general contract? (Using the CDT)

THE STRUCTURE OF MY PROJECT I am working in mycontract.cpp, which imports myheader.hpp WHAT I WANT I want to create a table in myheader.hpp, for a generic contract, "IN THEORY" as follows: struct [...
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3answers
64 views

Smart contract - find on two columns

I am currently writing a blog PoC on EOS. I would like the ability to delete a post. Now deleting by the ID alone is simple, I have it implemented as follows: whisper::post_index posts(_code, _code....