| Server IP : 85.214.239.14 / Your IP : 3.133.116.55 Web Server : Apache/2.4.62 (Debian) System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.18 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /proc/3/root/proc/self/root/usr/include/postgresql/9.6/server/rewrite/ |
Upload File : |
/*-------------------------------------------------------------------------
*
* rewriteManip.h
* Querytree manipulation subroutines for query rewriter.
*
*
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/rewrite/rewriteManip.h
*
*-------------------------------------------------------------------------
*/
#ifndef REWRITEMANIP_H
#define REWRITEMANIP_H
#include "nodes/parsenodes.h"
typedef struct replace_rte_variables_context replace_rte_variables_context;
typedef Node *(*replace_rte_variables_callback) (Var *var,
replace_rte_variables_context *context);
struct replace_rte_variables_context
{
replace_rte_variables_callback callback; /* callback function */
void *callback_arg; /* context data for callback function */
int target_varno; /* RTE index to search for */
int sublevels_up; /* (current) nesting depth */
bool inserted_sublink; /* have we inserted a SubLink? */
};
typedef enum ReplaceVarsNoMatchOption
{
REPLACEVARS_REPORT_ERROR, /* throw error if no match */
REPLACEVARS_CHANGE_VARNO, /* change the Var's varno, nothing else */
REPLACEVARS_SUBSTITUTE_NULL /* replace with a NULL Const */
} ReplaceVarsNoMatchOption;
extern void OffsetVarNodes(Node *node, int offset, int sublevels_up);
extern void ChangeVarNodes(Node *node, int old_varno, int new_varno,
int sublevels_up);
extern void IncrementVarSublevelsUp(Node *node, int delta_sublevels_up,
int min_sublevels_up);
extern void IncrementVarSublevelsUp_rtable(List *rtable,
int delta_sublevels_up, int min_sublevels_up);
extern bool rangeTableEntry_used(Node *node, int rt_index,
int sublevels_up);
extern Query *getInsertSelectQuery(Query *parsetree, Query ***subquery_ptr);
extern void AddQual(Query *parsetree, Node *qual);
extern void AddInvertedQual(Query *parsetree, Node *qual);
extern bool contain_aggs_of_level(Node *node, int levelsup);
extern int locate_agg_of_level(Node *node, int levelsup);
extern bool contain_windowfuncs(Node *node);
extern int locate_windowfunc(Node *node);
extern bool checkExprHasSubLink(Node *node);
extern Node *replace_rte_variables(Node *node,
int target_varno, int sublevels_up,
replace_rte_variables_callback callback,
void *callback_arg,
bool *outer_hasSubLinks);
extern Node *replace_rte_variables_mutator(Node *node,
replace_rte_variables_context *context);
extern Node *map_variable_attnos(Node *node,
int target_varno, int sublevels_up,
const AttrNumber *attno_map, int map_length,
bool *found_whole_row);
extern Node *ReplaceVarsFromTargetList(Node *node,
int target_varno, int sublevels_up,
RangeTblEntry *target_rte,
List *targetlist,
ReplaceVarsNoMatchOption nomatch_option,
int nomatch_varno,
bool *outer_hasSubLinks);
#endif /* REWRITEMANIP_H */