drh 9b84f03556 Add the new "explain" virtual table in ext/misc. Use this virtual table ...

for additional test cases for the optimization that avoids updating indexes
on expressions when none of the columns changed by the UPDATE are in the
expression.

FossilOrigin-Name: 2404304cc15eaeee2744cf3c8f9cac0a544631c4f1060c5a17a78b43ca86edf0

2018-09-16 16:18:01 +00:00

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