Re: [PATCH] Add pg_get_database_ddl() function to reconstruct CREATE DATABASE statement

Hi, Akshay

On Fri, 06 Mar 2026 at 17:21, Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com> wrote:
> I have updated the documentation.
> Attached is the v12 patch, now ready for further review.
>

Thanks for updating the patch.

I might not have expressed myself clearly in my last email — apologies.
Here's a diff that should make it clearer.

diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index bbf82c1d6c0..1ed56ee71ab 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13859,7 +13859,6 @@ parse_ddl_options(FunctionCallInfo fcinfo, int variadic_start)
bool *nulls;
Oid *types;
int nargs;
- bool found = false;

/* Extract variadic arguments */
nargs = extract_variadic_args(fcinfo, variadic_start, true,
@@ -13887,8 +13886,7 @@ parse_ddl_options(FunctionCallInfo fcinfo, int variadic_start)
{
char *name;
bool bval;
-
- found = false;
+ bool found = false;

/* Key must not be null */
if (nulls[i])
@@ -13925,8 +13923,8 @@ parse_ddl_options(FunctionCallInfo fcinfo, int variadic_start)
if (!parse_bool(valstr, &bval))
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
- errmsg("argument %d: invalid value \"%s\" for key \"%s\"",
- i + 2, valstr, name),
+ errmsg("value for option \"%s\" at position %d has invalid value \"%s\"",
+ name, i + 2, valstr),
errhint("Valid values are: true, false, yes, no, 1, 0, on, off.")));
pfree(valstr);
}
@@ -13934,8 +13932,8 @@ parse_ddl_options(FunctionCallInfo fcinfo, int variadic_start)
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
- errmsg("argument %d: value for key \"%s\" must be boolean or text type",
- i + 2, name)));
+ errmsg("value for option \"%s\" at position %d has type %s, expected type boolean or text",
+ name, i + 2, format_type_be(types[i + 1]))));
}

/*
@@ -13983,7 +13981,7 @@ parse_ddl_options(FunctionCallInfo fcinfo, int variadic_start)
/*
* pg_get_database_ddl
*
- * Generate a CREATE DATABASE statement for the specified database name or oid.
+ * Generate a CREATE DATABASE statement for the specified database oid.
*
* db_oid - OID of the database for which to generate the DDL.
* options - Variadic name/value pairs to modify the output.

--
Regards,
Japin Li
ChengDu WenWu Information Technology Co., Ltd.