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Move inheritance expansion code into its own file

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This commit moves expand_inherited_tables and underlings from
optimizer/prep/prepunionc.c to optimizer/utils/inherit.c.
Also, all of the AppendRelInfo-based expression manipulation routines
are moved to optimizer/utils/appendinfo.c.

No functional code changes.  One exception is the introduction of
make_append_rel_info, but that's still just moving around code.

Also, stop including <limits.h> in prepunion.c, which no longer needs
it since 3fc6e2d7f5.  I (Álvaro) noticed this because Amit was copying
that to inherit.c, which likewise doesn't need it.

Author: Amit Langote
Discussion: https://postgr.es/m/3be67028-a00a-502c-199a-da00eec8fb6e@lab.ntt.co.jp
This commit is contained in:
Alvaro Herrera
2019-01-10 14:54:31 -03:00
parent dacadcd1f3
commit b60c397599
15 changed files with 1343 additions and 1227 deletions
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18
src/include/optimizer/prep.h
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@@ -47,22 +47,4 @@ extern PlanRowMark *get_plan_rowmark(List *rowmarks, Index rtindex);
*/
extern RelOptInfo *plan_set_operations(PlannerInfo *root);
extern void expand_inherited_tables(PlannerInfo *root);
extern Node *adjust_appendrel_attrs(PlannerInfo *root, Node *node,
int nappinfos, AppendRelInfo **appinfos);
extern Node *adjust_appendrel_attrs_multilevel(PlannerInfo *root, Node *node,
Relids child_relids,
Relids top_parent_relids);
extern AppendRelInfo **find_appinfos_by_relids(PlannerInfo *root,
Relids relids, int *nappinfos);
extern SpecialJoinInfo *build_child_join_sjinfo(PlannerInfo *root,
SpecialJoinInfo *parent_sjinfo,
Relids left_relids, Relids right_relids);
extern Relids adjust_child_relids_multilevel(PlannerInfo *root, Relids relids,
Relids child_relids, Relids top_parent_relids);
#endif /* PREP_H */