greenplumn comment 源码
greenplumn comment 代码
文件路径：/src/include/commands/comment.h
/*
* src/include/commands/comment.h
*
*-------------------------------------------------------------------------
*
* comment.h
*
* Prototypes for functions in commands/comment.c
*
* Copyright (c) 1999-2019, PostgreSQL Global Development Group
*
*-------------------------------------------------------------------------
*/
#ifndef COMMENT_H
#define COMMENT_H
#include "catalog/objectaddress.h"
#include "nodes/parsenodes.h"
/*------------------------------------------------------------------
* Function Prototypes --
*
* The following prototypes define the public functions of the comment
* related routines. CommentObject() implements the SQL "COMMENT ON"
* command. DeleteComments() deletes all comments for an object.
* CreateComments creates (or deletes, if comment is NULL) a comment
* for a specific key. There are versions of these two methods for
* both normal and shared objects.
*------------------------------------------------------------------
*/
extern ObjectAddress CommentObject(CommentStmt *stmt);
extern void DeleteComments(Oid oid, Oid classoid, int32 subid);
extern void CreateComments(Oid oid, Oid classoid, int32 subid, const char *comment);
extern void DeleteSharedComments(Oid oid, Oid classoid);
extern void CreateSharedComments(Oid oid, Oid classoid, const char *comment);
extern char *GetComment(Oid oid, Oid classoid, int32 subid);
#endif /* COMMENT_H */
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