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86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* explain.h
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* prototypes for explain.c
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*
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* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994-5, Regents of the University of California
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*
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* src/include/commands/explain.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef EXPLAIN_H
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#define EXPLAIN_H
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#include "executor/executor.h"
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typedef enum ExplainFormat
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{
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EXPLAIN_FORMAT_TEXT,
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EXPLAIN_FORMAT_XML,
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EXPLAIN_FORMAT_JSON,
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EXPLAIN_FORMAT_YAML
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} ExplainFormat;
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typedef struct ExplainState
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{
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StringInfo str; /* output buffer */
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/* options */
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bool verbose; /* be verbose */
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bool analyze; /* print actual times */
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bool costs; /* print costs */
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bool buffers; /* print buffer usage */
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ExplainFormat format; /* output format */
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/* other states */
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PlannedStmt *pstmt; /* top of plan */
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List *rtable; /* range table */
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int indent; /* current indentation level */
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List *grouping_stack; /* format-specific grouping state */
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} ExplainState;
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/* Hook for plugins to get control in ExplainOneQuery() */
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typedef void (*ExplainOneQuery_hook_type) (Query *query,
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ExplainState *es,
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const char *queryString,
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ParamListInfo params);
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extern PGDLLIMPORT ExplainOneQuery_hook_type ExplainOneQuery_hook;
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/* Hook for plugins to get control in explain_get_index_name() */
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typedef const char *(*explain_get_index_name_hook_type) (Oid indexId);
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extern PGDLLIMPORT explain_get_index_name_hook_type explain_get_index_name_hook;
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extern void ExplainQuery(ExplainStmt *stmt, const char *queryString,
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ParamListInfo params, DestReceiver *dest);
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extern void ExplainInitState(ExplainState *es);
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extern TupleDesc ExplainResultDesc(ExplainStmt *stmt);
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extern void ExplainOneUtility(Node *utilityStmt, ExplainState *es,
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const char *queryString, ParamListInfo params);
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extern void ExplainOnePlan(PlannedStmt *plannedstmt, ExplainState *es,
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const char *queryString, ParamListInfo params);
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extern void ExplainPrintPlan(ExplainState *es, QueryDesc *queryDesc);
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extern void ExplainQueryText(ExplainState *es, QueryDesc *queryDesc);
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extern void ExplainBeginOutput(ExplainState *es);
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extern void ExplainEndOutput(ExplainState *es);
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extern void ExplainSeparatePlans(ExplainState *es);
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extern void ExplainPropertyList(const char *qlabel, List *data,
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ExplainState *es);
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extern void ExplainPropertyText(const char *qlabel, const char *value,
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ExplainState *es);
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extern void ExplainPropertyInteger(const char *qlabel, int value,
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ExplainState *es);
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extern void ExplainPropertyLong(const char *qlabel, long value,
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ExplainState *es);
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extern void ExplainPropertyFloat(const char *qlabel, double value, int ndigits,
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ExplainState *es);
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#endif /* EXPLAIN_H */
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