6faf0b3baa
In order to re-calculate min/max values for groups where the min or max value is deleted, we need the view query definition in string form. However, pg_get_viewdef cannot be used for this purpose because IMMV's defenition is in pg_ivm_immv but not pg_rewrite. Therefore, we have to convert query definition in pg_ivm_immv to query definition string. We can use pg_get_querydef in PG15, but we cannot in PG14 or earlier, so we use codes in ruleutil.c copied from PG13 or PG14 depending versions.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_ivm.h
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* incremental view maintenance extension
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*
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* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
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* Portions Copyright (c) 2022, IVM Development Group
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _PG_IVM_H_
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#define _PG_IVM_H_
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#include "catalog/objectaddress.h"
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#include "fmgr.h"
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#include "nodes/params.h"
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#include "parser/parse_node.h"
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#include "tcop/dest.h"
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#include "utils/queryenvironment.h"
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#define Natts_pg_ivm_immv 3
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#define Anum_pg_ivm_immv_immvrelid 1
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#define Anum_pg_ivm_immv_viewdef 2
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#define Anum_pg_ivm_immv_ispopulated 3
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/* pg_ivm.c */
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extern void CreateChangePreventTrigger(Oid matviewOid);
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extern Oid PgIvmImmvRelationId(void);
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extern Oid PgIvmImmvPrimaryKeyIndexId(void);
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/* createas.c */
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extern ObjectAddress ExecCreateImmv(ParseState *pstate, CreateTableAsStmt *stmt,
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ParamListInfo params, QueryEnvironment *queryEnv,
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QueryCompletion *qc);
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extern void CreateIvmTriggersOnBaseTables(Query *qry, Oid matviewOid, bool is_create);
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extern void CreateIndexOnIMMV(Query *query, Relation matviewRel, bool is_create);
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extern Query *rewriteQueryForIMMV(Query *query, List *colNames);
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extern void makeIvmAggColumn(ParseState *pstate, Aggref *aggref, char *resname, AttrNumber *next_resno, List **aggs);
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/* matview.c */
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extern ObjectAddress ExecRefreshImmv(const RangeVar *relation, bool skipData,
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const char *queryString, QueryCompletion *qc);
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extern bool ImmvIncrementalMaintenanceIsEnabled(void);
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extern Datum IVM_immediate_before(PG_FUNCTION_ARGS);
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extern Datum IVM_immediate_maintenance(PG_FUNCTION_ARGS);
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extern void AtAbort_IVM(void);
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extern bool isIvmName(const char *s);
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/* ruleutils.c */
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extern char *pg_ivm_get_querydef(Query *query, bool pretty);
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#endif
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