langchainjs
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sql chain
equivalent of https://langchain.readthedocs.io/en/latest/modules/chains/examples/sqlite.html
a chain that generates sql code, then executes it, then summarizes responses
prereq for this is probably a sql tool + example of how to use it (separate pr)
Working on it here : https://github.com/hwchase17/langchainjs/pull/144
This is now released