1.2.1 From SQL Text to Raw Parse Tree
A line like SELECT name FROM users WHERE id = 1 arrives at the backend. As we saw in 1.1.1, the backend is a child process forked by the postmaster wh…
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1.2 Parser and Analyzer: How SQL Gets Its Meaning
A line like SELECT name FROM users WHERE id = 1 is just text when the client sends it. The first thing the backend does after receiving it is figure o…