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until vars are distributed to rels during query_planner() startup. We don't really need it before that, and not building it early has some advantages. First, we don't need to put it through the various preprocessing steps, which saves some cycles and eliminates the need for a number of routines to support PlaceHolderInfo nodes at all. Second, this means one less unused plan for any sub-SELECT appearing in a placeholder's expression, since we don't build placeholder_list until after sublink expansion is complete. |
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| timezone | ||
| tools | ||
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| DEVELOPERS | ||
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| win32.mak | ||