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Allow generalized expression syntax for partition bounds

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Previously, only literals were allowed.  This change allows general
expressions, including functions calls, which are evaluated at the
time the DDL command is executed.

Besides offering some more functionality, it simplifies the parser
structures and removes some inconsistencies in how the literals were
handled.

Author: Kyotaro Horiguchi, Tom Lane, Amit Langote
Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/flat/9f88b5e0-6da2-5227-20d0-0d7012beaa1c@lab.ntt.co.jp/
This commit is contained in:
Peter Eisentraut
2019-01-25 11:27:59 +01:00
parent e3565fd61c
commit 7c079d7417
14 changed files with 315 additions and 168 deletions
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3
src/include/optimizer/clauses.h
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@@ -82,6 +82,9 @@ extern Node *eval_const_expressions(PlannerInfo *root, Node *node);
extern Node *estimate_expression_value(PlannerInfo *root, Node *node);
extern Expr *evaluate_expr(Expr *expr, Oid result_type, int32 result_typmod,
Oid result_collation);
extern Query *inline_set_returning_function(PlannerInfo *root,
RangeTblEntry *rte);