pgsql-server/ oc/src/sgml/catalogs.sgml oc/src ... - Mailing list pgsql-committers

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    02/09/18 17:35:25

Modified files:
    doc/src/sgml   : catalogs.sgml datatype.sgml release.sgml
                     typeconv.sgml
    doc/src/sgml/ref: create_cast.sgml
    src/backend/catalog: heap.c pg_aggregate.c pg_proc.c
    src/backend/commands: functioncmds.c indexcmds.c
    src/backend/executor: nodeAgg.c
    src/backend/nodes: copyfuncs.c equalfuncs.c makefuncs.c
                       outfuncs.c readfuncs.c
    src/backend/optimizer/path: indxpath.c pathkeys.c
    src/backend/optimizer/plan: createplan.c
    src/backend/optimizer/prep: preptlist.c prepunion.c
    src/backend/parser: analyze.c gram.y keywords.c parse_clause.c
                        parse_coerce.c parse_expr.c parse_func.c
                        parse_node.c parse_oper.c parse_target.c
    src/backend/rewrite: rewriteHandler.c
    src/backend/utils/adt: arrayfuncs.c int8.c numeric.c regproc.c
                           ruleutils.c varbit.c varchar.c
    src/backend/utils/cache: lsyscache.c
    src/bin/initdb : initdb.sh
    src/bin/pg_dump: pg_dump.c
    src/include/catalog: catversion.h pg_cast.h pg_operator.h
                         pg_proc.h
    src/include/nodes: makefuncs.h parsenodes.h primnodes.h
    src/include/parser: parse_coerce.h parse_node.h parse_target.h
    src/include/utils: array.h builtins.h int8.h lsyscache.h
                       varbit.h
    src/test/regress/expected: domain.out
                               horology-no-DST-before-1970.out
                               horology-solaris-1947.out
                               horology.out opr_sanity.out
                               prepare.out rules.out strings.out
                               union.out
    src/test/regress/sql: domain.sql horology.sql opr_sanity.sql
                          strings.sql

Log message:
    Extend pg_cast castimplicit column to a three-way value; this allows us
    to be flexible about assignment casts without introducing ambiguity in
    operator/function resolution.  Introduce a well-defined promotion hierarchy
    for numeric datatypes (int2->int4->int8->numeric->float4->float8).
    Change make_const to initially label numeric literals as int4, int8, or
    numeric (never float8 anymore).
    Explicitly mark Func and RelabelType nodes to indicate whether they came
    from a function call, explicit cast, or implicit cast; use this to do
    reverse-listing more accurately and without so many heuristics.
    Explicit casts to char, varchar, bit, varbit will truncate or pad without
    raising an error (the pre-7.2 behavior), while assigning to a column without
    any explicit cast will still raise an error for wrong-length data like 7.3.
    This more nearly follows the SQL spec than 7.2 behavior (we should be
    reporting a 'completion condition' in the explicit-cast cases, but we have
    no mechanism for that, so just do silent truncation).
    Fix some problems with enforcement of typmod for array elements;
    it didn't work at all in 'UPDATE ... SET array[n] = foo', for example.
    Provide a generalized array_length_coerce() function to replace the
    specialized per-array-type functions that used to be needed (and were
    missing for NUMERIC as well as all the datetime types).
    Add missing conversions int8<->float4, text<->numeric, oid<->int8.
    initdb forced.