here should use %r
Merge branch 'dev' into rewriting-result
finished a the draft of rewriting
added simple tests of new API
rename sections
print the result (cursor) out
added dry_run mechanism
just print it
set flags dump_sql and dry_run
test modifying the identity column
updated all of the rows if col_row is string
merged updates
make the merging mechanism better
make test better
make the area of dumping
change behavior to update all of rows
extended the getitem behavior
return None if not sqls
avoid empty sqls at saving
make assume better