PostgreSQL Source Code git master
Functions
nodeUnique.h File Reference
#include "nodes/execnodes.h"
Include dependency graph for nodeUnique.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions

UniqueState *  ExecInitUnique (Unique *node, EState *estate, int eflags)
 
void  ExecEndUnique (UniqueState *node)
 
void  ExecReScanUnique (UniqueState *node)
 

Function Documentation

◆ ExecEndUnique()

void ExecEndUnique ( UniqueState *  node )

Definition at line 168 of file nodeUnique.c.

169{
171}
void ExecEndNode(PlanState *node)
Definition: execProcnode.c:562
#define outerPlanState(node)
Definition: execnodes.h:1255

References ExecEndNode(), and outerPlanState.

Referenced by ExecEndNode().

◆ ExecInitUnique()

UniqueState * ExecInitUnique ( Unique *  node,
EState *  estate,
int  eflags 
)

Definition at line 114 of file nodeUnique.c.

115{
116 UniqueState *uniquestate;
117
118 /* check for unsupported flags */
120
121 /*
122 * create state structure
123 */
124 uniquestate = makeNode(UniqueState);
125 uniquestate->ps.plan = (Plan *) node;
126 uniquestate->ps.state = estate;
127 uniquestate->ps.ExecProcNode = ExecUnique;
128
129 /*
130 * create expression context
131 */
132 ExecAssignExprContext(estate, &uniquestate->ps);
133
134 /*
135 * then initialize outer plan
136 */
137 outerPlanState(uniquestate) = ExecInitNode(outerPlan(node), estate, eflags);
138
139 /*
140 * Initialize result slot and type. Unique nodes do no projections, so
141 * initialize projection info for this node appropriately.
142 */
144 uniquestate->ps.ps_ProjInfo = NULL;
145
146 /*
147 * Precompute fmgr lookup data for inner loop
148 */
149 uniquestate->eqfunction =
151 node->numCols,
152 node->uniqColIdx,
153 node->uniqOperators,
154 node->uniqCollations,
155 &uniquestate->ps);
156
157 return uniquestate;
158}
ExprState * execTuplesMatchPrepare(TupleDesc desc, int numCols, const AttrNumber *keyColIdx, const Oid *eqOperators, const Oid *collations, PlanState *parent)
Definition: execGrouping.c:58
PlanState * ExecInitNode(Plan *node, EState *estate, int eflags)
Definition: execProcnode.c:142
void ExecInitResultTupleSlotTL(PlanState *planstate, const TupleTableSlotOps *tts_ops)
Definition: execTuples.c:1988
const TupleTableSlotOps TTSOpsMinimalTuple
Definition: execTuples.c:86
TupleDesc ExecGetResultType(PlanState *planstate)
Definition: execUtils.c:495
void ExecAssignExprContext(EState *estate, PlanState *planstate)
Definition: execUtils.c:485
#define EXEC_FLAG_BACKWARD
Definition: executor.h:69
#define EXEC_FLAG_MARK
Definition: executor.h:70
Assert(PointerIsAligned(start, uint64))
static TupleTableSlot * ExecUnique(PlanState *pstate)
Definition: nodeUnique.c:46
#define makeNode(_type_)
Definition: nodes.h:161
#define outerPlan(node)
Definition: plannodes.h:252
Plan * plan
Definition: execnodes.h:1159
EState * state
Definition: execnodes.h:1161
ProjectionInfo * ps_ProjInfo
Definition: execnodes.h:1199
ExecProcNodeMtd ExecProcNode
Definition: execnodes.h:1165
Definition: plannodes.h:177
PlanState ps
Definition: execnodes.h:2723
ExprState * eqfunction
Definition: execnodes.h:2724
int numCols
Definition: plannodes.h:1305

References Assert(), UniqueState::eqfunction, EXEC_FLAG_BACKWARD, EXEC_FLAG_MARK, ExecAssignExprContext(), ExecGetResultType(), ExecInitNode(), ExecInitResultTupleSlotTL(), PlanState::ExecProcNode, execTuplesMatchPrepare(), ExecUnique(), makeNode, Unique::numCols, outerPlan, outerPlanState, PlanState::plan, UniqueState::ps, PlanState::ps_ProjInfo, PlanState::state, and TTSOpsMinimalTuple.

Referenced by ExecInitNode().

◆ ExecReScanUnique()

void ExecReScanUnique ( UniqueState *  node )

Definition at line 175 of file nodeUnique.c.

176{
178
179 /* must clear result tuple so first input tuple is returned */
181
182 /*
183 * if chgParam of subnode is not null then plan will be re-scanned by
184 * first ExecProcNode.
185 */
186 if (outerPlan->chgParam == NULL)
188}
void ExecReScan(PlanState *node)
Definition: execAmi.c:77
TupleTableSlot * ps_ResultTupleSlot
Definition: execnodes.h:1197
static TupleTableSlot * ExecClearTuple(TupleTableSlot *slot)
Definition: tuptable.h:458

References ExecClearTuple(), ExecReScan(), outerPlan, outerPlanState, UniqueState::ps, and PlanState::ps_ResultTupleSlot.

Referenced by ExecReScan().

AltStyle によって変換されたページ (->オリジナル) /