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From: jian he <[email protected]>
To: Amit Langote <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Erik Rijkers <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: remaining sql/json patches
Date: Thu, 25 Jan 2024 17:20:00 +0800
Message-ID: <CACJufxHUV-rOFex=VTLO-5y0y2gUg6LFQw59HFHUpZZxbcHEeQ@mail.gmail.com> (raw)
In-Reply-To: <CA+HiwqFctBg7--Om7fFdYUwwfJ5xb1M3L4E3d=-HZ=nXK_ETtA@mail.gmail.com>
References: <[email protected]>
	<[email protected]>
	<CA+HiwqGN6DUKAVabqEhQ8e=0593emvJ6P4rQ_8x8N84k=mWq1Q@mail.gmail.com>
	<CA+HiwqFctBg7--Om7fFdYUwwfJ5xb1M3L4E3d=-HZ=nXK_ETtA@mail.gmail.com>

On 9.16.4. JSON_TABLE
`
name type FORMAT JSON [ENCODING UTF8] [ PATH json_path_specification ]
Inserts a composite SQL/JSON item into the output row
`
i am not sure "Inserts a composite SQL/JSON item into the output row"
I think it means, for any type's typecategory is TYPCATEGORY_STRING,
if FORMAT JSON is specified explicitly, the output value (text type)
will be legal
json type representation.

I also did a minor refactor on JSON_VALUE_OP, jsexpr->omit_quotes.


Attachments:

  [application/x-patch] minor_fix_v38.diff (1023B, ../CACJufxHUV-rOFex=VTLO-5y0y2gUg6LFQw59HFHUpZZxbcHEeQ@mail.gmail.com/2-minor_fix_v38.diff)
  download | inline diff:
diff --git a/src/backend/executor/execExpr.c b/src/backend/executor/execExpr.c
index 74bc6f49..56ab12ac 100644
--- a/src/backend/executor/execExpr.c
+++ b/src/backend/executor/execExpr.c
@@ -4289,7 +4289,7 @@ ExecInitJsonExpr(JsonExpr *jexpr, ExprState *state,
 	 * nodes.
 	 */
 	jsestate->escontext.type = T_ErrorSaveContext;
-	if (jexpr->result_coercion || jexpr->omit_quotes)
+	if (jexpr->result_coercion)
 	{
 		jsestate->jump_eval_result_coercion =
 			ExecInitJsonExprCoercion(state, jexpr->result_coercion,
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
index 31c0847e..9802b4ae 100644
--- a/src/backend/parser/parse_expr.c
+++ b/src/backend/parser/parse_expr.c
@@ -4363,6 +4363,7 @@ transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *func)
 			jsexpr->returning->format->format_type = JS_FORMAT_DEFAULT;
 			jsexpr->returning->format->encoding = JS_ENC_DEFAULT;
 
+			jsexpr->omit_quotes = true;
 			jsexpr->result_coercion = coerceJsonFuncExprOutput(pstate, jsexpr);
 
 			/*


  [application/octet-stream] v1-0001-refactor-sqljson_jsontable-related-tests.no-cfbot (25.7K, ../CACJufxHUV-rOFex=VTLO-5y0y2gUg6LFQw59HFHUpZZxbcHEeQ@mail.gmail.com/3-v1-0001-refactor-sqljson_jsontable-related-tests.no-cfbot)
  download

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  Subject: Re: remaining sql/json patches
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