Make some error strings more generic

It's undesirable to have SQL commands or configuration options in a
translatable error string, so take some of these out.

src/backend/commands/collationcmds.c

@@ -250,19 +250,22 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e
 			if (!collcollate)
 				ereport(ERROR,
 						(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-						 errmsg("parameter \"lc_collate\" must be specified")));
+						 errmsg("parameter \"%s\" must be specified",
+								"lc_collate")));
 
 			if (!collctype)
 				ereport(ERROR,
 						(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-						 errmsg("parameter \"lc_ctype\" must be specified")));
+						 errmsg("parameter \"%s\" must be specified",
+								"lc_ctype")));
 		}
 		else if (collprovider == COLLPROVIDER_ICU)
 		{
 			if (!colliculocale)
 				ereport(ERROR,
 						(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
-						 errmsg("parameter \"locale\" must be specified")));
+						 errmsg("parameter \"%s\" must be specified",
+								"locale")));
 
 			/*
 			 * During binary upgrade, preserve the locale string. Otherwise,
@@ -416,7 +419,9 @@ AlterCollation(AlterCollationStmt *stmt)
 	if (collOid == DEFAULT_COLLATION_OID)
 		ereport(ERROR,
 				(errmsg("cannot refresh version of default collation"),
-				 errhint("Use ALTER DATABASE ... REFRESH COLLATION VERSION instead.")));
+		/* translator: %s is an SQL command */
+				 errhint("Use %s instead.",
+						 "ALTER DATABASE ... REFRESH COLLATION VERSION")));
 
 	if (!object_ownercheck(CollationRelationId, collOid, GetUserId()))
 		aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_COLLATION,

src/backend/commands/tablecmds.c

@@ -7701,7 +7701,9 @@ ATExecColumnDefault(Relation rel, const char *colName,
 				(errcode(ERRCODE_SYNTAX_ERROR),
 				 errmsg("column \"%s\" of relation \"%s\" is an identity column",
 						colName, RelationGetRelationName(rel)),
-				 newDefault ? 0 : errhint("Use ALTER TABLE ... ALTER COLUMN ... DROP IDENTITY instead.")));
+		/* translator: %s is an SQL ALTER command */
+				 newDefault ? 0 : errhint("Use %s instead.",
+										  "ALTER TABLE ... ALTER COLUMN ... DROP IDENTITY")));
 
 	if (TupleDescAttr(tupdesc, attnum - 1)->attgenerated)
 		ereport(ERROR,
@@ -7709,7 +7711,9 @@ ATExecColumnDefault(Relation rel, const char *colName,
 				 errmsg("column \"%s\" of relation \"%s\" is a generated column",
 						colName, RelationGetRelationName(rel)),
 				 newDefault || TupleDescAttr(tupdesc, attnum - 1)->attgenerated != ATTRIBUTE_GENERATED_STORED ? 0 :
-				 errhint("Use ALTER TABLE ... ALTER COLUMN ... DROP EXPRESSION instead.")));
+		/* translator: %s is an SQL ALTER command */
+				 errhint("Use %s instead.",
+						 "ALTER TABLE ... ALTER COLUMN ... DROP EXPRESSION")));
 
 	/*
 	 * Remove any old default for the column.  We use RESTRICT here for
@@ -13900,7 +13904,9 @@ ATExecChangeOwner(Oid relationOid, Oid newOwnerId, bool recursing, LOCKMODE lock
 					(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 					 errmsg("\"%s\" is a composite type",
 							NameStr(tuple_class->relname)),
-					 errhint("Use ALTER TYPE instead.")));
+			/* translator: %s is an SQL ALTER command */
+					 errhint("Use %s instead.",
+							 "ALTER TYPE")));
 			break;
 		case RELKIND_TOASTVALUE:
 			if (recursing)
@@ -17178,7 +17184,9 @@ RangeVarCallbackForAlterRelation(const RangeVar *rv, Oid relid, Oid oldrelid,
 		ereport(ERROR,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("\"%s\" is a composite type", rv->relname),
-				 errhint("Use ALTER TYPE instead.")));
+		/* translator: %s is an SQL ALTER command */
+				 errhint("Use %s instead.",
+						 "ALTER TYPE")));
 
 	/*
 	 * Don't allow ALTER TABLE .. SET SCHEMA on relations that can't be moved
@@ -17197,7 +17205,9 @@ RangeVarCallbackForAlterRelation(const RangeVar *rv, Oid relid, Oid oldrelid,
 					(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 					 errmsg("cannot change schema of composite type \"%s\"",
 							rv->relname),
-					 errhint("Use ALTER TYPE instead.")));
+			/* translator: %s is an SQL ALTER command */
+					 errhint("Use %s instead.",
+							 "ALTER TYPE")));
 		else if (relkind == RELKIND_TOASTVALUE)
 			ereport(ERROR,
 					(errcode(ERRCODE_WRONG_OBJECT_TYPE),

src/backend/commands/typecmds.c

@@ -3633,7 +3633,9 @@ RenameType(RenameStmt *stmt)
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("%s is a table's row type",
 						format_type_be(typeOid)),
-				 errhint("Use ALTER TABLE instead.")));
+		/* translator: %s is an SQL ALTER command */
+				 errhint("Use %s instead.",
+						 "ALTER TABLE")));
 
 	/* don't allow direct alteration of array types, either */
 	if (IsTrueArrayType(typTup))
@@ -3714,7 +3716,9 @@ AlterTypeOwner(List *names, Oid newOwnerId, ObjectType objecttype)
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("%s is a table's row type",
 						format_type_be(typeOid)),
-				 errhint("Use ALTER TABLE instead.")));
+		/* translator: %s is an SQL ALTER command */
+				 errhint("Use %s instead.",
+						 "ALTER TABLE")));
 
 	/* don't allow direct alteration of array types, either */
 	if (IsTrueArrayType(typTup))
@@ -4005,7 +4009,9 @@ AlterTypeNamespaceInternal(Oid typeOid, Oid nspOid,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("%s is a table's row type",
 						format_type_be(typeOid)),
-				 errhint("Use ALTER TABLE instead.")));
+		/* translator: %s is an SQL ALTER command */
+				 errhint("Use %s instead.",
+						 "ALTER TABLE")));
 
 	if (oldNspOid != nspOid)
 	{