Revert SQL/JSON features

The reverts the following and makes some associated cleanups:

    commit f79b803dc: Common SQL/JSON clauses
    commit f4fb45d15: SQL/JSON constructors
    commit 5f0adec25: Make STRING an unreserved_keyword.
    commit 33a377608: IS JSON predicate
    commit 1a36bc9db: SQL/JSON query functions
    commit 606948b05: SQL JSON functions
    commit 49082c2cc: RETURNING clause for JSON() and JSON_SCALAR()
    commit 4e34747c8: JSON_TABLE
    commit fadb48b00: PLAN clauses for JSON_TABLE
    commit 2ef6f11b0: Reduce running time of jsonb_sqljson test
    commit 14d3f24fa: Further improve jsonb_sqljson parallel test
    commit a6baa4bad: Documentation for SQL/JSON features
    commit b46bcf7a4: Improve readability of SQL/JSON documentation.
    commit 112fdb352: Fix finalization for json_objectagg and friends
    commit fcdb35c32: Fix transformJsonBehavior
    commit 4cd8717af: Improve a couple of sql/json error messages
    commit f7a605f63: Small cleanups in SQL/JSON code
    commit 9c3d25e17: Fix JSON_OBJECTAGG uniquefying bug
    commit a79153b7a: Claim SQL standard compliance for SQL/JSON features
    commit a1e7616d6: Rework SQL/JSON documentation
    commit 8d9f9634e: Fix errors in copyfuncs/equalfuncs support for JSON node types.
    commit 3c633f32b: Only allow returning string types or bytea from json_serialize
    commit 67b26703b: expression eval: Fix EEOP_JSON_CONSTRUCTOR and EEOP_JSONEXPR size.

The release notes are also adjusted.

Backpatch to release 15.

Discussion: https://postgr.es/m/40d2c882-bcac-19a9-754d-4299e1d87ac7@postgresql.org

1 files changed, 0 insertions, 122 deletions

diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c
index 28288dcfc10..c85d8fe9751 100644
--- a/src/backend/nodes/makefuncs.c
+++ b/src/backend/nodes/makefuncs.c
@@ -19,7 +19,6 @@
 #include "catalog/pg_type.h"
 #include "nodes/makefuncs.h"
 #include "nodes/nodeFuncs.h"
-#include "utils/errcodes.h"
 #include "utils/lsyscache.h"
 
 
@@ -819,124 +818,3 @@ makeVacuumRelation(RangeVar *relation, Oid oid, List *va_cols)
 	v->va_cols = va_cols;
 	return v;
 }
-
-/*
- * makeJsonFormat -
- *	  creates a JsonFormat node
- */
-JsonFormat *
-makeJsonFormat(JsonFormatType type, JsonEncoding encoding, int location)
-{
-	JsonFormat *jf = makeNode(JsonFormat);
-
-	jf->format_type = type;
-	jf->encoding = encoding;
-	jf->location = location;
-
-	return jf;
-}
-
-/*
- * makeJsonValueExpr -
- *	  creates a JsonValueExpr node
- */
-JsonValueExpr *
-makeJsonValueExpr(Expr *expr, JsonFormat *format)
-{
-	JsonValueExpr *jve = makeNode(JsonValueExpr);
-
-	jve->raw_expr = expr;
-	jve->formatted_expr = NULL;
-	jve->format = format;
-
-	return jve;
-}
-
-/*
- * makeJsonBehavior -
- *	  creates a JsonBehavior node
- */
-JsonBehavior *
-makeJsonBehavior(JsonBehaviorType type, Node *default_expr)
-{
-	JsonBehavior *behavior = makeNode(JsonBehavior);
-
-	behavior->btype = type;
-	behavior->default_expr = default_expr;
-
-	return behavior;
-}
-
-/*
- * makeJsonTableJoinedPlan -
- *	   creates a joined JsonTablePlan node
- */
-Node *
-makeJsonTableJoinedPlan(JsonTablePlanJoinType type, Node *plan1, Node *plan2,
-						int location)
-{
-	JsonTablePlan *n = makeNode(JsonTablePlan);
-
-	n->plan_type = JSTP_JOINED;
-	n->join_type = type;
-	n->plan1 = castNode(JsonTablePlan, plan1);
-	n->plan2 = castNode(JsonTablePlan, plan2);
-	n->location = location;
-
-	return (Node *) n;
-}
-
-/*
- * makeJsonEncoding -
- *	  converts JSON encoding name to enum JsonEncoding
- */
-JsonEncoding
-makeJsonEncoding(char *name)
-{
-	if (!pg_strcasecmp(name, "utf8"))
-		return JS_ENC_UTF8;
-	if (!pg_strcasecmp(name, "utf16"))
-		return JS_ENC_UTF16;
-	if (!pg_strcasecmp(name, "utf32"))
-		return JS_ENC_UTF32;
-
-	ereport(ERROR,
-			(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-			 errmsg("unrecognized JSON encoding: %s", name)));
-
-	return JS_ENC_DEFAULT;
-}
-
-/*
- * makeJsonKeyValue -
- *	  creates a JsonKeyValue node
- */
-Node *
-makeJsonKeyValue(Node *key, Node *value)
-{
-	JsonKeyValue *n = makeNode(JsonKeyValue);
-
-	n->key = (Expr *) key;
-	n->value = castNode(JsonValueExpr, value);
-
-	return (Node *) n;
-}
-
-/*
- * makeJsonIsPredicate -
- *	  creates a JsonIsPredicate node
- */
-Node *
-makeJsonIsPredicate(Node *expr, JsonFormat *format, JsonValueType item_type,
-					bool unique_keys, int location)
-{
-	JsonIsPredicate *n = makeNode(JsonIsPredicate);
-
-	n->expr = expr;
-	n->format = format;
-	n->item_type = item_type;
-	n->unique_keys = unique_keys;
-	n->location = location;
-
-	return (Node *) n;
-}