origindb | Blazing fast and flexible JSON database | REST library
kandi X-RAY | origindb Summary
kandi X-RAY | origindb Summary
Blazing fast and flexible JSON database. Each key in the db object corresponds to a JSON file.
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QUESTION
I am trying to use temp tables in an sql codechunk in rstudio.
An example: When I select one table and return it into an r object things seem to be working:
...ANSWER
Answered 2017-Aug-16 at 18:53I accomplished my goal using CTEs. As long as you define your CTEs in the order that they will be used it works. It is just like using temp tables with one big exception. The CTEs are gone after the query finishes where temp tables exist until you spid is kill (typically via a disconnect).
QUESTION
I want to copy a table (10 million records) in originDB(sqlite3) into another database called targetDB.
The process of my method is:
read data from the origin table and generate a ResultSet, then generate corresponding insert sql about every record and execute commit to batch insert when the count of record reach 10000.
The code as follow:
ANSWER
Answered 2018-Jun-01 at 09:15You are trying to fetch 10M records in one go by doing the following. This will definitely eat your memory like anything
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