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SQL/JSON query functions

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This introduces the SQL/JSON functions for querying JSON data using
jsonpath expressions. The functions are:

JSON_EXISTS()
JSON_QUERY()
JSON_VALUE()

All of these functions only operate on jsonb. The workaround for now is
to cast the argument to jsonb.

JSON_EXISTS() tests if the jsonpath expression applied to the jsonb
value yields any values. JSON_VALUE() must return a single value, and an
error occurs if it tries to return multiple values. JSON_QUERY() must
return a json object or array, and there are various WRAPPER options for
handling scalar or multi-value results. Both these functions have
options for handling EMPTY and ERROR conditions.

Nikita Glukhov

Reviewers have included (in no particular order) Andres Freund, Alexander
Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu,
Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby.

Discussion: https://postgr.es/m/cd0bb935-0158-78a7-08b5-904886deac4b@postgrespro.ru
This commit is contained in:
Andrew Dunstan
2022-03-03 13:11:14 -05:00
parent 3d067c53b2
commit 1a36bc9dba
39 changed files with 4719 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

150
src/backend/nodes/copyfuncs.c
View File

@@ -2491,6 +2491,90 @@ _copyJsonArrayQueryConstructor(const JsonArrayQueryConstructor *from)
return newnode;
}
/*
* _copyJsonExpr
*/
static JsonExpr *
_copyJsonExpr(const JsonExpr *from)
{
JsonExpr *newnode = makeNode(JsonExpr);
COPY_SCALAR_FIELD(op);
COPY_NODE_FIELD(formatted_expr);
COPY_NODE_FIELD(result_coercion);
COPY_NODE_FIELD(format);
COPY_NODE_FIELD(path_spec);
COPY_NODE_FIELD(passing_values);
COPY_NODE_FIELD(passing_names);
COPY_NODE_FIELD(returning);
COPY_NODE_FIELD(on_error);
COPY_NODE_FIELD(on_empty);
COPY_NODE_FIELD(coercions);
COPY_SCALAR_FIELD(wrapper);
COPY_SCALAR_FIELD(omit_quotes);
COPY_LOCATION_FIELD(location);
return newnode;
}
/*
* _copyJsonCoercion
*/
static JsonCoercion *
_copyJsonCoercion(const JsonCoercion *from)
{
JsonCoercion *newnode = makeNode(JsonCoercion);
COPY_NODE_FIELD(expr);
COPY_SCALAR_FIELD(via_populate);
COPY_SCALAR_FIELD(via_io);
COPY_SCALAR_FIELD(collation);
return newnode;
}
/*
* _copyJsonItemCoercions
*/
static JsonItemCoercions *
_copyJsonItemCoercions(const JsonItemCoercions *from)
{
JsonItemCoercions *newnode = makeNode(JsonItemCoercions);
COPY_NODE_FIELD(null);
COPY_NODE_FIELD(string);
COPY_NODE_FIELD(numeric);
COPY_NODE_FIELD(boolean);
COPY_NODE_FIELD(date);
COPY_NODE_FIELD(time);
COPY_NODE_FIELD(timetz);
COPY_NODE_FIELD(timestamp);
COPY_NODE_FIELD(timestamptz);
COPY_NODE_FIELD(composite);
return newnode;
}
/*
* _copyJsonFuncExpr
*/
static JsonFuncExpr *
_copyJsonFuncExpr(const JsonFuncExpr *from)
{
JsonFuncExpr *newnode = makeNode(JsonFuncExpr);
COPY_SCALAR_FIELD(op);
COPY_NODE_FIELD(common);
COPY_NODE_FIELD(output);
COPY_NODE_FIELD(on_empty);
COPY_NODE_FIELD(on_error);
COPY_SCALAR_FIELD(wrapper);
COPY_SCALAR_FIELD(omit_quotes);
COPY_LOCATION_FIELD(location);
return newnode;
}
/*
* _copyJsonIsPredicate
*/
@@ -2508,6 +2592,51 @@ _copyJsonIsPredicate(const JsonIsPredicate *from)
return newnode;
}
/*
* _copyJsonBehavior
*/
static JsonBehavior *
_copyJsonBehavior(const JsonBehavior *from)
{
JsonBehavior *newnode = makeNode(JsonBehavior);
COPY_SCALAR_FIELD(btype);
COPY_NODE_FIELD(default_expr);
return newnode;
}
/*
* _copyJsonCommon
*/
static JsonCommon *
_copyJsonCommon(const JsonCommon *from)
{
JsonCommon *newnode = makeNode(JsonCommon);
COPY_NODE_FIELD(expr);
COPY_NODE_FIELD(pathspec);
COPY_STRING_FIELD(pathname);
COPY_NODE_FIELD(passing);
COPY_LOCATION_FIELD(location);
return newnode;
}
/*
* _copyJsonArgument
*/
static JsonArgument *
_copyJsonArgument(const JsonArgument *from)
{
JsonArgument *newnode = makeNode(JsonArgument);
COPY_NODE_FIELD(val);
COPY_STRING_FIELD(name);
return newnode;
}
/* ****************************************************************
* pathnodes.h copy functions
*
@@ -5645,6 +5774,27 @@ copyObjectImpl(const void *from)
case T_JsonIsPredicate:
retval = _copyJsonIsPredicate(from);
break;
case T_JsonFuncExpr:
retval = _copyJsonFuncExpr(from);
break;
case T_JsonExpr:
retval = _copyJsonExpr(from);
break;
case T_JsonCommon:
retval = _copyJsonCommon(from);
break;
case T_JsonBehavior:
retval = _copyJsonBehavior(from);
break;
case T_JsonArgument:
retval = _copyJsonArgument(from);
break;
case T_JsonCoercion:
retval = _copyJsonCoercion(from);
break;
case T_JsonItemCoercions:
retval = _copyJsonItemCoercions(from);
break;
/*
* RELATION NODES

127
src/backend/nodes/equalfuncs.c
View File

@@ -976,6 +976,42 @@ _equalJsonArrayQueryConstructor(const JsonArrayQueryConstructor *a,
return true;
}
static bool
_equalJsonFuncExpr(const JsonFuncExpr *a, const JsonFuncExpr *b)
{
COMPARE_SCALAR_FIELD(op);
COMPARE_NODE_FIELD(common);
COMPARE_NODE_FIELD(output);
COMPARE_NODE_FIELD(on_empty);
COMPARE_NODE_FIELD(on_error);
COMPARE_SCALAR_FIELD(wrapper);
COMPARE_SCALAR_FIELD(omit_quotes);
COMPARE_LOCATION_FIELD(location);
return true;
}
static bool
_equalJsonCommon(const JsonCommon *a, const JsonCommon *b)
{
COMPARE_NODE_FIELD(expr);
COMPARE_NODE_FIELD(pathspec);
COMPARE_STRING_FIELD(pathname);
COMPARE_NODE_FIELD(passing);
COMPARE_LOCATION_FIELD(location);
return true;
}
static bool
_equalJsonArgument(const JsonArgument *a, const JsonArgument *b)
{
COMPARE_NODE_FIELD(val);
COMPARE_STRING_FIELD(name);
return true;
}
static bool
_equalJsonIsPredicate(const JsonIsPredicate *a,
const JsonIsPredicate *b)
@@ -988,6 +1024,76 @@ _equalJsonIsPredicate(const JsonIsPredicate *a,
return true;
}
/*
* _equalJsonBehavior
*/
static bool
_equalJsonBehavior(const JsonBehavior *a, const JsonBehavior *b)
{
COMPARE_SCALAR_FIELD(btype);
COMPARE_NODE_FIELD(default_expr);
return true;
}
/*
* _equalJsonExpr
*/
static bool
_equalJsonExpr(const JsonExpr *a, const JsonExpr *b)
{
COMPARE_SCALAR_FIELD(op);
COMPARE_NODE_FIELD(formatted_expr);
COMPARE_NODE_FIELD(result_coercion);
COMPARE_NODE_FIELD(format);
COMPARE_NODE_FIELD(path_spec);
COMPARE_NODE_FIELD(passing_values);
COMPARE_NODE_FIELD(passing_names);
COMPARE_NODE_FIELD(returning);
COMPARE_NODE_FIELD(on_error);
COMPARE_NODE_FIELD(on_empty);
COMPARE_NODE_FIELD(coercions);
COMPARE_SCALAR_FIELD(wrapper);
COMPARE_SCALAR_FIELD(omit_quotes);
COMPARE_LOCATION_FIELD(location);
return true;
}
/*
* _equalJsonCoercion
*/
static bool
_equalJsonCoercion(const JsonCoercion *a, const JsonCoercion *b)
{
COMPARE_NODE_FIELD(expr);
COMPARE_SCALAR_FIELD(via_populate);
COMPARE_SCALAR_FIELD(via_io);
COMPARE_SCALAR_FIELD(collation);
return true;
}
/*
* _equalJsonItemCoercions
*/
static bool
_equalJsonItemCoercions(const JsonItemCoercions *a, const JsonItemCoercions *b)
{
COMPARE_NODE_FIELD(null);
COMPARE_NODE_FIELD(string);
COMPARE_NODE_FIELD(numeric);
COMPARE_NODE_FIELD(boolean);
COMPARE_NODE_FIELD(date);
COMPARE_NODE_FIELD(time);
COMPARE_NODE_FIELD(timetz);
COMPARE_NODE_FIELD(timestamp);
COMPARE_NODE_FIELD(timestamptz);
COMPARE_NODE_FIELD(composite);
return true;
}
/*
* Stuff from pathnodes.h
*/
@@ -3561,6 +3667,18 @@ equal(const void *a, const void *b)
case T_JsonIsPredicate:
retval = _equalJsonIsPredicate(a, b);
break;
case T_JsonBehavior:
retval = _equalJsonBehavior(a, b);
break;
case T_JsonExpr:
retval = _equalJsonExpr(a, b);
break;
case T_JsonCoercion:
retval = _equalJsonCoercion(a, b);
break;
case T_JsonItemCoercions:
retval = _equalJsonItemCoercions(a, b);
break;
/*
* RELATION NODES
@@ -4174,6 +4292,15 @@ equal(const void *a, const void *b)
case T_JsonArrayAgg:
retval = _equalJsonArrayAgg(a, b);
break;
case T_JsonFuncExpr:
retval = _equalJsonFuncExpr(a, b);
break;
case T_JsonCommon:
retval = _equalJsonCommon(a, b);
break;
case T_JsonArgument:
retval = _equalJsonArgument(a, b);
break;
default:
elog(ERROR, "unrecognized node type: %d",

15
src/backend/nodes/makefuncs.c
View File

@@ -852,6 +852,21 @@ makeJsonValueExpr(Expr *expr, JsonFormat *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;
}
/*
* makeJsonEncoding -
* converts JSON encoding name to enum JsonEncoding

186
src/backend/nodes/nodeFuncs.c
View File

@@ -263,6 +263,12 @@ exprType(const Node *expr)
case T_JsonIsPredicate:
type = BOOLOID;
break;
case T_JsonExpr:
type = ((const JsonExpr *) expr)->returning->typid;
break;
case T_JsonCoercion:
type = exprType(((const JsonCoercion *) expr)->expr);
break;
default:
elog(ERROR, "unrecognized node type: %d", (int) nodeTag(expr));
type = InvalidOid; /* keep compiler quiet */
@@ -498,7 +504,11 @@ exprTypmod(const Node *expr)
case T_JsonValueExpr:
return exprTypmod((Node *) ((const JsonValueExpr *) expr)->formatted_expr);
case T_JsonConstructorExpr:
return -1; /* ((const JsonConstructorExpr *) expr)->returning->typmod; */
return ((const JsonConstructorExpr *) expr)->returning->typmod;
case T_JsonExpr:
return ((JsonExpr *) expr)->returning->typmod;
case T_JsonCoercion:
return exprTypmod(((const JsonCoercion *) expr)->expr);
default:
break;
}
@@ -991,6 +1001,21 @@ exprCollation(const Node *expr)
case T_JsonIsPredicate:
coll = InvalidOid; /* result is always an boolean type */
break;
case T_JsonExpr:
{
JsonExpr *jexpr = (JsonExpr *) expr;
JsonCoercion *coercion = jexpr->result_coercion;
if (!coercion)
coll = InvalidOid;
else if (coercion->expr)
coll = exprCollation(coercion->expr);
else if (coercion->via_io || coercion->via_populate)
coll = coercion->collation;
else
coll = InvalidOid;
}
break;
default:
elog(ERROR, "unrecognized node type: %d", (int) nodeTag(expr));
coll = InvalidOid; /* keep compiler quiet */
@@ -1220,6 +1245,21 @@ exprSetCollation(Node *expr, Oid collation)
case T_JsonIsPredicate:
Assert(!OidIsValid(collation)); /* result is always boolean */
break;
case T_JsonExpr:
{
JsonExpr *jexpr = (JsonExpr *) expr;
JsonCoercion *coercion = jexpr->result_coercion;
if (!coercion)
Assert(!OidIsValid(collation));
else if (coercion->expr)
exprSetCollation(coercion->expr, collation);
else if (coercion->via_io || coercion->via_populate)
coercion->collation = collation;
else
Assert(!OidIsValid(collation));
}
break;
default:
elog(ERROR, "unrecognized node type: %d", (int) nodeTag(expr));
break;
@@ -1675,6 +1715,15 @@ exprLocation(const Node *expr)
case T_JsonIsPredicate:
loc = ((const JsonIsPredicate *) expr)->location;
break;
case T_JsonExpr:
{
const JsonExpr *jsexpr = (const JsonExpr *) expr;
/* consider both function name and leftmost arg */
loc = leftmostLoc(jsexpr->location,
exprLocation(jsexpr->formatted_expr));
}
break;
default:
/* for any other node type it's just unknown... */
loc = -1;
@@ -2443,6 +2492,54 @@ expression_tree_walker(Node *node,
break;
case T_JsonIsPredicate:
return walker(((JsonIsPredicate *) node)->expr, context);
case T_JsonExpr:
{
JsonExpr *jexpr = (JsonExpr *) node;
if (walker(jexpr->formatted_expr, context))
return true;
if (walker(jexpr->result_coercion, context))
return true;
if (walker(jexpr->passing_values, context))
return true;
/* we assume walker doesn't care about passing_names */
if (jexpr->on_empty &&
walker(jexpr->on_empty->default_expr, context))
return true;
if (walker(jexpr->on_error->default_expr, context))
return true;
if (walker(jexpr->coercions, context))
return true;
}
break;
case T_JsonCoercion:
return walker(((JsonCoercion *) node)->expr, context);
case T_JsonItemCoercions:
{
JsonItemCoercions *coercions = (JsonItemCoercions *) node;
if (walker(coercions->null, context))
return true;
if (walker(coercions->string, context))
return true;
if (walker(coercions->numeric, context))
return true;
if (walker(coercions->boolean, context))
return true;
if (walker(coercions->date, context))
return true;
if (walker(coercions->time, context))
return true;
if (walker(coercions->timetz, context))
return true;
if (walker(coercions->timestamp, context))
return true;
if (walker(coercions->timestamptz, context))
return true;
if (walker(coercions->composite, context))
return true;
}
break;
default:
elog(ERROR, "unrecognized node type: %d",
(int) nodeTag(node));
@@ -3454,6 +3551,7 @@ expression_tree_mutator(Node *node,
return (Node *) newnode;
}
break;
case T_JsonIsPredicate:
{
JsonIsPredicate *pred = (JsonIsPredicate *) node;
@@ -3464,6 +3562,55 @@ expression_tree_mutator(Node *node,
return (Node *) newnode;
}
break;
case T_JsonExpr:
{
JsonExpr *jexpr = (JsonExpr *) node;
JsonExpr *newnode;
FLATCOPY(newnode, jexpr, JsonExpr);
MUTATE(newnode->path_spec, jexpr->path_spec, Node *);
MUTATE(newnode->formatted_expr, jexpr->formatted_expr, Node *);
MUTATE(newnode->result_coercion, jexpr->result_coercion, JsonCoercion *);
MUTATE(newnode->passing_values, jexpr->passing_values, List *);
/* assume mutator does not care about passing_names */
if (newnode->on_empty)
MUTATE(newnode->on_empty->default_expr,
jexpr->on_empty->default_expr, Node *);
MUTATE(newnode->on_error->default_expr,
jexpr->on_error->default_expr, Node *);
return (Node *) newnode;
}
break;
case T_JsonCoercion:
{
JsonCoercion *coercion = (JsonCoercion *) node;
JsonCoercion *newnode;
FLATCOPY(newnode, coercion, JsonCoercion);
MUTATE(newnode->expr, coercion->expr, Node *);
return (Node *) newnode;
}
break;
case T_JsonItemCoercions:
{
JsonItemCoercions *coercions = (JsonItemCoercions *) node;
JsonItemCoercions *newnode;
FLATCOPY(newnode, coercions, JsonItemCoercions);
MUTATE(newnode->null, coercions->null, JsonCoercion *);
MUTATE(newnode->string, coercions->string, JsonCoercion *);
MUTATE(newnode->numeric, coercions->numeric, JsonCoercion *);
MUTATE(newnode->boolean, coercions->boolean, JsonCoercion *);
MUTATE(newnode->date, coercions->date, JsonCoercion *);
MUTATE(newnode->time, coercions->time, JsonCoercion *);
MUTATE(newnode->timetz, coercions->timetz, JsonCoercion *);
MUTATE(newnode->timestamp, coercions->timestamp, JsonCoercion *);
MUTATE(newnode->timestamptz, coercions->timestamptz, JsonCoercion *);
MUTATE(newnode->composite, coercions->composite, JsonCoercion *);
return (Node *) newnode;
}
break;
default:
elog(ERROR, "unrecognized node type: %d",
(int) nodeTag(node));
@@ -4316,6 +4463,43 @@ raw_expression_tree_walker(Node *node,
break;
case T_JsonIsPredicate:
return walker(((JsonIsPredicate *) node)->expr, context);
case T_JsonArgument:
return walker(((JsonArgument *) node)->val, context);
case T_JsonCommon:
{
JsonCommon *jc = (JsonCommon *) node;
if (walker(jc->expr, context))
return true;
if (walker(jc->pathspec, context))
return true;
if (walker(jc->passing, context))
return true;
}
break;
case T_JsonBehavior:
{
JsonBehavior *jb = (JsonBehavior *) node;
if (jb->btype == JSON_BEHAVIOR_DEFAULT &&
walker(jb->default_expr, context))
return true;
}
break;
case T_JsonFuncExpr:
{
JsonFuncExpr *jfe = (JsonFuncExpr *) node;
if (walker(jfe->common, context))
return true;
if (jfe->output && walker(jfe->output, context))
return true;
if (walker(jfe->on_empty, context))
return true;
if (walker(jfe->on_error, context))
return true;
}
break;
default:
elog(ERROR, "unrecognized node type: %d",
(int) nodeTag(node));

70
src/backend/nodes/outfuncs.c
View File

@@ -1808,6 +1808,64 @@ _outJsonIsPredicate(StringInfo str, const JsonIsPredicate *node)
WRITE_LOCATION_FIELD(location);
}
static void
_outJsonBehavior(StringInfo str, const JsonBehavior *node)
{
WRITE_NODE_TYPE("JSONBEHAVIOR");
WRITE_ENUM_FIELD(btype, JsonBehaviorType);
WRITE_NODE_FIELD(default_expr);
}
static void
_outJsonExpr(StringInfo str, const JsonExpr *node)
{
WRITE_NODE_TYPE("JSONEXPR");
WRITE_ENUM_FIELD(op, JsonExprOp);
WRITE_NODE_FIELD(formatted_expr);
WRITE_NODE_FIELD(result_coercion);
WRITE_NODE_FIELD(format);
WRITE_NODE_FIELD(path_spec);
WRITE_NODE_FIELD(passing_values);
WRITE_NODE_FIELD(passing_names);
WRITE_NODE_FIELD(returning);
WRITE_NODE_FIELD(on_error);
WRITE_NODE_FIELD(on_empty);
WRITE_NODE_FIELD(coercions);
WRITE_ENUM_FIELD(wrapper, JsonWrapper);
WRITE_BOOL_FIELD(omit_quotes);
WRITE_LOCATION_FIELD(location);
}
static void
_outJsonCoercion(StringInfo str, const JsonCoercion *node)
{
WRITE_NODE_TYPE("JSONCOERCION");
WRITE_NODE_FIELD(expr);
WRITE_BOOL_FIELD(via_populate);
WRITE_BOOL_FIELD(via_io);
WRITE_OID_FIELD(collation);
}
static void
_outJsonItemCoercions(StringInfo str, const JsonItemCoercions *node)
{
WRITE_NODE_TYPE("JSONITEMCOERCIONS");
WRITE_NODE_FIELD(null);
WRITE_NODE_FIELD(string);
WRITE_NODE_FIELD(numeric);
WRITE_NODE_FIELD(boolean);
WRITE_NODE_FIELD(date);
WRITE_NODE_FIELD(time);
WRITE_NODE_FIELD(timetz);
WRITE_NODE_FIELD(timestamp);
WRITE_NODE_FIELD(timestamptz);
WRITE_NODE_FIELD(composite);
}
/*****************************************************************************
*
* Stuff from pathnodes.h.
@@ -4644,6 +4702,18 @@ outNode(StringInfo str, const void *obj)
case T_JsonIsPredicate:
_outJsonIsPredicate(str, obj);
break;
case T_JsonBehavior:
_outJsonBehavior(str, obj);
break;
case T_JsonExpr:
_outJsonExpr(str, obj);
break;
case T_JsonCoercion:
_outJsonCoercion(str, obj);
break;
case T_JsonItemCoercions:
_outJsonItemCoercions(str, obj);
break;
default:

86
src/backend/nodes/readfuncs.c
View File

@@ -1492,6 +1492,84 @@ _readJsonConstructorExpr(void)
READ_DONE();
}
/*
* _readJsonBehavior
*/
static JsonBehavior *
_readJsonBehavior(void)
{
READ_LOCALS(JsonBehavior);
READ_ENUM_FIELD(btype, JsonBehaviorType);
READ_NODE_FIELD(default_expr);
READ_DONE();
}
/*
* _readJsonExpr
*/
static JsonExpr *
_readJsonExpr(void)
{
READ_LOCALS(JsonExpr);
READ_ENUM_FIELD(op, JsonExprOp);
READ_NODE_FIELD(formatted_expr);
READ_NODE_FIELD(result_coercion);
READ_NODE_FIELD(format);
READ_NODE_FIELD(path_spec);
READ_NODE_FIELD(passing_values);
READ_NODE_FIELD(passing_names);
READ_NODE_FIELD(returning);
READ_NODE_FIELD(on_error);
READ_NODE_FIELD(on_empty);
READ_NODE_FIELD(coercions);
READ_ENUM_FIELD(wrapper, JsonWrapper);
READ_BOOL_FIELD(omit_quotes);
READ_LOCATION_FIELD(location);
READ_DONE();
}
/*
* _readJsonCoercion
*/
static JsonCoercion *
_readJsonCoercion(void)
{
READ_LOCALS(JsonCoercion);
READ_NODE_FIELD(expr);
READ_BOOL_FIELD(via_populate);
READ_BOOL_FIELD(via_io);
READ_OID_FIELD(collation);
READ_DONE();
}
/*
* _readJsonItemCoercions
*/
static JsonItemCoercions *
_readJsonItemCoercions(void)
{
READ_LOCALS(JsonItemCoercions);
READ_NODE_FIELD(null);
READ_NODE_FIELD(string);
READ_NODE_FIELD(numeric);
READ_NODE_FIELD(boolean);
READ_NODE_FIELD(date);
READ_NODE_FIELD(time);
READ_NODE_FIELD(timetz);
READ_NODE_FIELD(timestamp);
READ_NODE_FIELD(timestamptz);
READ_NODE_FIELD(composite);
READ_DONE();
}
/*
* _readJsonIsPredicate
*/
@@ -3108,6 +3186,14 @@ parseNodeString(void)
return_value = _readJsonConstructorExpr();
else if (MATCH("JSONISPREDICATE", 15))
return_value = _readJsonIsPredicate();
else if (MATCH("JSONBEHAVIOR", 12))
return_value = _readJsonBehavior();
else if (MATCH("JSONEXPR", 8))
return_value = _readJsonExpr();
else if (MATCH("JSONCOERCION", 12))
return_value = _readJsonCoercion();
else if (MATCH("JSONITEMCOERCIONS", 17))
return_value = _readJsonItemCoercions();
else
{
elog(ERROR, "badly formatted node string \"%.32s\"...", token);