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/*------------------------------------------------------------------------- * * explain.h * prototypes for explain.c * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994-5, Regents of the University of California * * src/include/commands/explain.h * *------------------------------------------------------------------------- */ #ifndef EXPLAIN_H #define EXPLAIN_H #include "executor/executor.h" #include "lib/stringinfo.h" typedef enum ExplainFormat { EXPLAIN_FORMAT_TEXT, EXPLAIN_FORMAT_XML, EXPLAIN_FORMAT_JSON, EXPLAIN_FORMAT_YAML } ExplainFormat; typedef struct ExplainState { StringInfo str; /* output buffer */ /* options */ bool verbose; /* be verbose */ bool analyze; /* print actual times */ bool costs; /* print estimated costs */ bool buffers; /* print buffer usage */ bool timing; /* print detailed node timing */ bool summary; /* print total planning and execution timing */ ExplainFormat format; /* output format */ /* state for output formatting --- not reset for each new plan tree */ int indent; /* current indentation level */ List *grouping_stack; /* format-specific grouping state */ /* state related to the current plan tree (filled by ExplainPrintPlan) */ PlannedStmt *pstmt; /* top of plan */ List *rtable; /* range table */ List *rtable_names; /* alias names for RTEs */ List *deparse_cxt; /* context list for deparsing expressions */ Bitmapset *printed_subplans; /* ids of SubPlans we've printed */ } ExplainState; /* Hook for plugins to get control in ExplainOneQuery() */ typedef void (*ExplainOneQuery_hook_type) (Query *query, IntoClause *into, ExplainState *es, const char *queryString, ParamListInfo params); extern PGDLLIMPORT ExplainOneQuery_hook_type ExplainOneQuery_hook; /* Hook for plugins to get control in explain_get_index_name() */ typedef const char *(*explain_get_index_name_hook_type) (Oid indexId); extern PGDLLIMPORT explain_get_index_name_hook_type explain_get_index_name_hook; extern void ExplainQuery(ExplainStmt *stmt, const char *queryString, ParamListInfo params, DestReceiver *dest); extern ExplainState *NewExplainState(void); extern TupleDesc ExplainResultDesc(ExplainStmt *stmt); extern void ExplainOneUtility(Node *utilityStmt, IntoClause *into, ExplainState *es, const char *queryString, ParamListInfo params); extern void ExplainOnePlan(PlannedStmt *plannedstmt, IntoClause *into, ExplainState *es, const char *queryString, ParamListInfo params, const instr_time *planduration); extern void ExplainPrintPlan(ExplainState *es, QueryDesc *queryDesc); extern void ExplainPrintTriggers(ExplainState *es, QueryDesc *queryDesc); extern void ExplainQueryText(ExplainState *es, QueryDesc *queryDesc); extern void ExplainBeginOutput(ExplainState *es); extern void ExplainEndOutput(ExplainState *es); extern void ExplainSeparatePlans(ExplainState *es); extern void ExplainPropertyList(const char *qlabel, List *data, ExplainState *es); extern void ExplainPropertyListNested(const char *qlabel, List *data, ExplainState *es); extern void ExplainPropertyText(const char *qlabel, const char *value, ExplainState *es); extern void ExplainPropertyInteger(const char *qlabel, int value, ExplainState *es); extern void ExplainPropertyLong(const char *qlabel, long value, ExplainState *es); extern void ExplainPropertyFloat(const char *qlabel, double value, int ndigits, ExplainState *es); extern void ExplainPropertyBool(const char *qlabel, bool value, ExplainState *es); #endif /* EXPLAIN_H */