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Merge Resdom nodes into TargetEntry nodes to simplify code and save a

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few palloc's.  I also chose to eliminate the restype and restypmod fields
entirely, since they are redundant with information stored in the node's
contained expression; re-examining the expression at need seems simpler
and more reliable than trying to keep restype/restypmod up to date.

initdb forced due to change in contents of stored rules.
This commit is contained in:
Tom Lane
2005-04-06 16:34:07 +00:00
parent 0f3748a28c
commit ad161bcc8a
43 changed files with 537 additions and 799 deletions
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src/tools/backend/index.html
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@ -71,9 +71,8 @@ transformFromClause().</A> Query.rtable holds the query's range table.</P><P>
Certain queries, like <I>SELECT,</I> return columns of data. Other
queries, like <I>INSERT</I> and <I>UPDATE,</I> specify the columns
modified by the query. These column references are converted to <A
HREF="../../include/nodes/primnodes.h">Resdom</A> entries, which are
placed in <A HREF="../../include/nodes/parsenodes.h">target list
entries,</A> and linked together to make up the <I>target list</I> of
HREF="../../include/nodes/primnodes.h">TargetEntry</A> entries, which are
linked together to make up the <I>target list</I> of
the query. The target list is stored in Query.targetList, which is
generated by <A
HREF="../../backend/parser/parse_target.c">transformTargetList().</A></P><P>