mirror of https://github.com/citusdata/citus.git
422 lines
20 KiB
C
422 lines
20 KiB
C
/*-------------------------------------------------------------------------
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*
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* commands.h
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* Declarations for public functions and variables used for all commands
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* and DDL operations for citus. All declarations are grouped by the
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* file that implements them.
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*
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* Copyright (c) Citus Data, Inc.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef CITUS_COMMANDS_H
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#define CITUS_COMMANDS_H
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#include "postgres.h"
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#include "utils/rel.h"
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#include "nodes/parsenodes.h"
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#include "tcop/dest.h"
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/*
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* DistributeObjectOps specifies handlers for node/object type pairs.
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* Instances of this type should all be declared in deparse.c.
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* Handlers expect to receive the same Node passed to GetDistributeObjectOps.
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* Handlers may be NULL.
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*
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* Handlers:
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* deparse: return a string representation of the node.
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* qualify: replace names in tree with qualified names.
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* preprocess: executed before standard_ProcessUtility.
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* postprocess: executed after standard_ProcessUtility.
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* address: return an ObjectAddress for the subject of the statement.
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* 2nd parameter is missing_ok.
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*
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* preprocess/postprocess return a List of DDLJobs.
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*/
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typedef struct DistributeObjectOps
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{
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char * (*deparse)(Node *);
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void (*qualify)(Node *);
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List * (*preprocess)(Node *, const char *);
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List * (*postprocess)(Node *, const char *);
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ObjectAddress (*address)(Node *, bool);
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} DistributeObjectOps;
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#define CITUS_TRUNCATE_TRIGGER_NAME "citus_truncate_trigger"
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const DistributeObjectOps * GetDistributeObjectOps(Node *node);
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/*
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* Flags that can be passed to GetForeignKeyOids to indicate
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* which foreign key constraint OIDs are to be extracted
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*/
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typedef enum ExtractForeignKeyConstraintsMode
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{
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/* extract the foreign key OIDs where the table is the referencing one */
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INCLUDE_REFERENCING_CONSTRAINTS = 1 << 0,
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/* extract the foreign key OIDs the table is the referenced one */
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INCLUDE_REFERENCED_CONSTRAINTS = 1 << 1,
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/* exclude the self-referencing foreign keys */
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EXCLUDE_SELF_REFERENCES = 1 << 2,
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/* any combination of the 4 flags below is supported */
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/* include foreign keys when the other table is a distributed table*/
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INCLUDE_DISTRIBUTED_TABLES = 1 << 3,
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/* include foreign keys when the other table is a reference table*/
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INCLUDE_REFERENCE_TABLES = 1 << 4,
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/* include foreign keys when the other table is a citus local table*/
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INCLUDE_CITUS_LOCAL_TABLES = 1 << 5,
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/* include foreign keys when the other table is a Postgres local table*/
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INCLUDE_LOCAL_TABLES = 1 << 6,
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/* include foreign keys regardless of the other table's type */
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INCLUDE_ALL_TABLE_TYPES = INCLUDE_DISTRIBUTED_TABLES | INCLUDE_REFERENCE_TABLES |
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INCLUDE_CITUS_LOCAL_TABLES | INCLUDE_LOCAL_TABLES
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} ExtractForeignKeyConstraintMode;
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/*
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* Flags that can be passed to GetForeignKeyIdsForColumn to
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* indicate whether relationId argument should match:
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* - referencing relation or,
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* - referenced relation,
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* or we are searching for both sides.
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*/
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typedef enum SearchForeignKeyColumnFlags
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{
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/* relationId argument should match referencing relation */
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SEARCH_REFERENCING_RELATION = 1 << 0,
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/* relationId argument should match referenced relation */
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SEARCH_REFERENCED_RELATION = 1 << 1,
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/* callers can also pass union of above flags */
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} SearchForeignKeyColumnFlags;
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/* cluster.c - forward declarations */
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extern List * PreprocessClusterStmt(Node *node, const char *clusterCommand);
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/* index.c */
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typedef void (*PGIndexProcessor)(Form_pg_index, List **);
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/* call.c */
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extern bool CallDistributedProcedureRemotely(CallStmt *callStmt, DestReceiver *dest);
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/* collation.c - forward declarations */
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extern char * CreateCollationDDL(Oid collationId);
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extern List * CreateCollationDDLsIdempotent(Oid collationId);
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extern ObjectAddress AlterCollationOwnerObjectAddress(Node *stmt, bool missing_ok);
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extern List * PreprocessDropCollationStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterCollationOwnerStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterCollationSchemaStmt(Node *stmt, const char *queryString);
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extern List * PreprocessRenameCollationStmt(Node *stmt, const char *queryString);
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extern ObjectAddress RenameCollationStmtObjectAddress(Node *stmt, bool missing_ok);
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extern ObjectAddress AlterCollationSchemaStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * PostprocessAlterCollationSchemaStmt(Node *stmt, const char *queryString);
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extern char * GenerateBackupNameForCollationCollision(const ObjectAddress *address);
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extern ObjectAddress DefineCollationStmtObjectAddress(Node *stmt, bool missing_ok);
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extern List * PostprocessDefineCollationStmt(Node *stmt, const char *queryString);
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/* extension.c - forward declarations */
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extern bool IsDropCitusExtensionStmt(Node *parsetree);
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extern bool IsCreateAlterExtensionUpdateCitusStmt(Node *parsetree);
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extern void ErrorIfUnstableCreateOrAlterExtensionStmt(Node *parsetree);
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extern List * PostprocessCreateExtensionStmt(Node *stmt, const char *queryString);
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extern List * PreprocessDropExtensionStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterExtensionSchemaStmt(Node *stmt,
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const char *queryString);
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extern List * PostprocessAlterExtensionSchemaStmt(Node *stmt,
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const char *queryString);
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extern List * PreprocessAlterExtensionUpdateStmt(Node *stmt,
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const char *queryString);
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extern void PostprocessAlterExtensionCitusUpdateStmt(Node *node);
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extern List * PreprocessAlterExtensionContentsStmt(Node *node,
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const char *queryString);
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extern List * CreateExtensionDDLCommand(const ObjectAddress *extensionAddress);
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extern ObjectAddress AlterExtensionSchemaStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern ObjectAddress AlterExtensionUpdateStmtObjectAddress(Node *stmt,
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bool missing_ok);
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/* foreign_constraint.c - forward declarations */
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extern bool ConstraintIsAForeignKeyToReferenceTable(char *constraintName,
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Oid leftRelationId);
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extern void ErrorIfUnsupportedForeignConstraintExists(Relation relation,
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char referencingReplicationModel,
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char distributionMethod,
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Var *distributionColumn,
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uint32 colocationId);
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extern void ErrorOutForFKeyBetweenPostgresAndCitusLocalTable(Oid localTableId);
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extern bool ColumnReferencedByAnyForeignKey(char *columnName, Oid relationId);
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extern bool ColumnAppearsInForeignKeyToReferenceTable(char *columnName, Oid
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relationId);
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extern List * GetReferencingForeignConstaintCommands(Oid relationOid);
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extern bool HasForeignKeyToCitusLocalTable(Oid relationId);
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extern bool HasForeignKeyToReferenceTable(Oid relationOid);
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extern bool TableReferenced(Oid relationOid);
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extern bool TableReferencing(Oid relationOid);
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extern bool ConstraintIsAForeignKey(char *inputConstaintName, Oid relationOid);
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extern bool ConstraintWithNameIsOfType(char *inputConstaintName, Oid relationId,
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char targetConstraintType);
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extern bool ConstraintWithIdIsOfType(Oid constraintId, char targetConstraintType);
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extern bool TableHasExternalForeignKeys(Oid relationId);
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extern List * GetForeignKeyOids(Oid relationId, int flags);
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extern Oid GetReferencedTableId(Oid foreignKeyId);
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extern bool RelationInvolvedInAnyNonInheritedForeignKeys(Oid relationId);
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/* function.c - forward declarations */
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extern List * PreprocessCreateFunctionStmt(Node *stmt, const char *queryString);
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extern List * PostprocessCreateFunctionStmt(Node *stmt,
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const char *queryString);
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extern ObjectAddress CreateFunctionStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern ObjectAddress DefineAggregateStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * PreprocessAlterFunctionStmt(Node *stmt, const char *queryString);
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extern ObjectAddress AlterFunctionStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * PreprocessRenameFunctionStmt(Node *stmt, const char *queryString);
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extern ObjectAddress RenameFunctionStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * PreprocessAlterFunctionOwnerStmt(Node *stmt, const char *queryString);
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extern ObjectAddress AlterFunctionOwnerObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * PreprocessAlterFunctionSchemaStmt(Node *stmt, const char *queryString);
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extern ObjectAddress AlterFunctionSchemaStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * PostprocessAlterFunctionSchemaStmt(Node *stmt,
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const char *queryString);
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extern List * PreprocessDropFunctionStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterFunctionDependsStmt(Node *stmt,
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const char *queryString);
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extern ObjectAddress AlterFunctionDependsStmtObjectAddress(Node *stmt,
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bool missing_ok);
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/* grant.c - forward declarations */
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extern List * PreprocessGrantStmt(Node *node, const char *queryString);
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/* index.c - forward declarations */
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extern bool IsIndexRenameStmt(RenameStmt *renameStmt);
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extern List * PreprocessIndexStmt(Node *createIndexStatement,
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const char *createIndexCommand);
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extern char * ChooseIndexName(const char *tabname, Oid namespaceId,
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List *colnames, List *exclusionOpNames,
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bool primary, bool isconstraint);
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extern char * ChooseIndexNameAddition(List *colnames);
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extern List * ChooseIndexColumnNames(List *indexElems);
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extern List * PreprocessReindexStmt(Node *ReindexStatement,
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const char *ReindexCommand);
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extern List * PreprocessDropIndexStmt(Node *dropIndexStatement,
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const char *dropIndexCommand);
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extern List * PostprocessIndexStmt(Node *node,
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const char *queryString);
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extern void ErrorIfUnsupportedAlterIndexStmt(AlterTableStmt *alterTableStatement);
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extern void MarkIndexValid(IndexStmt *indexStmt);
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extern List * ExecuteFunctionOnEachTableIndex(Oid relationId, PGIndexProcessor
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pgIndexProcessor);
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/* objectaddress.c - forward declarations */
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extern ObjectAddress CreateExtensionStmtObjectAddress(Node *stmt, bool missing_ok);
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/* policy.c - forward declarations */
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extern List * CreatePolicyCommands(Oid relationId);
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extern void ErrorIfUnsupportedPolicy(Relation relation);
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extern List * PreprocessCreatePolicyStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterPolicyStmt(Node *node, const char *queryString);
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extern List * PreprocessDropPolicyStmt(Node *stmt, const char *queryString);
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extern bool IsPolicyRenameStmt(RenameStmt *stmt);
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extern void CreatePolicyEventExtendNames(CreatePolicyStmt *stmt, const char *schemaName,
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uint64 shardId);
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extern void AlterPolicyEventExtendNames(AlterPolicyStmt *stmt, const char *schemaName,
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uint64 shardId);
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extern void RenamePolicyEventExtendNames(RenameStmt *stmt, const char *schemaName, uint64
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shardId);
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extern void DropPolicyEventExtendNames(DropStmt *stmt, const char *schemaName, uint64
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shardId);
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/* rename.c - forward declarations*/
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extern List * PreprocessRenameStmt(Node *renameStmt, const char *renameCommand);
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extern void ErrorIfUnsupportedRenameStmt(RenameStmt *renameStmt);
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extern List * PreprocessRenameAttributeStmt(Node *stmt, const char *queryString);
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/* role.c - forward declarations*/
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extern List * PostprocessAlterRoleStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterRoleSetStmt(Node *stmt, const char *queryString);
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extern List * GenerateAlterRoleSetCommandForRole(Oid roleid);
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extern ObjectAddress AlterRoleStmtObjectAddress(Node *node,
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bool missing_ok);
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extern ObjectAddress AlterRoleSetStmtObjectAddress(Node *node,
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bool missing_ok);
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extern List * GenerateCreateOrAlterRoleCommand(Oid roleOid);
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/* schema.c - forward declarations */
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extern List * PreprocessDropSchemaStmt(Node *dropSchemaStatement,
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const char *queryString);
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extern List * PreprocessAlterObjectSchemaStmt(Node *alterObjectSchemaStmt,
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const char *alterObjectSchemaCommand);
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extern List * PreprocessGrantOnSchemaStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterSchemaRenameStmt(Node *node, const char *queryString);
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extern ObjectAddress AlterSchemaRenameStmtObjectAddress(Node *node, bool missing_ok);
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/* sequence.c - forward declarations */
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extern void ErrorIfUnsupportedSeqStmt(CreateSeqStmt *createSeqStmt);
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extern void ErrorIfDistributedAlterSeqOwnedBy(AlterSeqStmt *alterSeqStmt);
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/* statistics.c - forward declarations */
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extern List * PreprocessCreateStatisticsStmt(Node *node, const char *queryString);
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extern List * PostprocessCreateStatisticsStmt(Node *node, const char *queryString);
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extern ObjectAddress CreateStatisticsStmtObjectAddress(Node *node, bool missingOk);
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extern List * PreprocessDropStatisticsStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterStatisticsRenameStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterStatisticsSchemaStmt(Node *node, const char *queryString);
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extern List * PostprocessAlterStatisticsSchemaStmt(Node *node, const char *queryString);
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extern ObjectAddress AlterStatisticsSchemaStmtObjectAddress(Node *node, bool missingOk);
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extern List * PreprocessAlterStatisticsStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterStatisticsOwnerStmt(Node *node, const char *queryString);
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extern List * GetExplicitStatisticsCommandList(Oid relationId);
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extern List * GetExplicitStatisticsSchemaIdList(Oid relationId);
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/* subscription.c - forward declarations */
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extern Node * ProcessCreateSubscriptionStmt(CreateSubscriptionStmt *createSubStmt);
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/* table.c - forward declarations */
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extern List * PreprocessDropTableStmt(Node *stmt, const char *queryString);
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extern void PostprocessCreateTableStmt(CreateStmt *createStatement,
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const char *queryString);
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extern List * PostprocessAlterTableStmtAttachPartition(
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AlterTableStmt *alterTableStatement,
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const char *queryString);
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extern List * PostprocessAlterTableSchemaStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterTableStmt(Node *node, const char *alterTableCommand);
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extern List * PreprocessAlterTableMoveAllStmt(Node *node, const char *queryString);
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extern List * PreprocessAlterTableSchemaStmt(Node *node, const char *queryString);
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extern Node * WorkerProcessAlterTableStmt(AlterTableStmt *alterTableStatement,
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const char *alterTableCommand);
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extern bool IsAlterTableRenameStmt(RenameStmt *renameStmt);
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extern void ErrorIfAlterDropsPartitionColumn(AlterTableStmt *alterTableStatement);
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extern void PostprocessAlterTableStmt(AlterTableStmt *pStmt);
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extern void ErrorUnsupportedAlterTableAddColumn(Oid relationId, AlterTableCmd *command,
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Constraint *constraint);
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extern void ErrorIfUnsupportedConstraint(Relation relation, char distributionMethod,
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char referencingReplicationModel,
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Var *distributionColumn, uint32 colocationId);
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extern ObjectAddress AlterTableSchemaStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern List * MakeNameListFromRangeVar(const RangeVar *rel);
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/* truncate.c - forward declarations */
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extern void PreprocessTruncateStatement(TruncateStmt *truncateStatement);
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/* type.c - forward declarations */
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extern List * PreprocessCompositeTypeStmt(Node *stmt, const char *queryString);
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extern List * PostprocessCompositeTypeStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterTypeStmt(Node *stmt, const char *queryString);
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extern List * PreprocessCreateEnumStmt(Node *stmt, const char *queryString);
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extern List * PostprocessCreateEnumStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterEnumStmt(Node *stmt, const char *queryString);
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extern List * PostprocessAlterEnumStmt(Node *stmt, const char *queryString);
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extern List * PreprocessDropTypeStmt(Node *stmt, const char *queryString);
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extern List * PreprocessRenameTypeStmt(Node *stmt, const char *queryString);
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extern List * PreprocessRenameTypeAttributeStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterTypeSchemaStmt(Node *stmt, const char *queryString);
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extern List * PreprocessAlterTypeOwnerStmt(Node *stmt, const char *queryString);
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extern List * PostprocessAlterTypeSchemaStmt(Node *stmt, const char *queryString);
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extern Node * CreateTypeStmtByObjectAddress(const ObjectAddress *address);
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extern ObjectAddress CompositeTypeStmtObjectAddress(Node *stmt, bool missing_ok);
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extern ObjectAddress CreateEnumStmtObjectAddress(Node *stmt, bool missing_ok);
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extern ObjectAddress AlterTypeStmtObjectAddress(Node *stmt, bool missing_ok);
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extern ObjectAddress AlterEnumStmtObjectAddress(Node *stmt, bool missing_ok);
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extern ObjectAddress RenameTypeStmtObjectAddress(Node *stmt, bool missing_ok);
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extern ObjectAddress AlterTypeSchemaStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern ObjectAddress RenameTypeAttributeStmtObjectAddress(Node *stmt,
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bool missing_ok);
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extern ObjectAddress AlterTypeOwnerObjectAddress(Node *stmt, bool missing_ok);
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extern List * CreateTypeDDLCommandsIdempotent(const ObjectAddress *typeAddress);
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extern char * GenerateBackupNameForTypeCollision(const ObjectAddress *address);
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/* function.c - forward declarations */
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extern List * CreateFunctionDDLCommandsIdempotent(const ObjectAddress *functionAddress);
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extern char * GetFunctionDDLCommand(const RegProcedure funcOid, bool useCreateOrReplace);
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extern char * GenerateBackupNameForProcCollision(const ObjectAddress *address);
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extern ObjectWithArgs * ObjectWithArgsFromOid(Oid funcOid);
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/* vacuum.c - forward declarations */
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extern void PostprocessVacuumStmt(VacuumStmt *vacuumStmt, const char *vacuumCommand);
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/* trigger.c - forward declarations */
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extern List * GetExplicitTriggerCommandList(Oid relationId);
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extern HeapTuple GetTriggerTupleById(Oid triggerId, bool missingOk);
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extern List * GetExplicitTriggerIdList(Oid relationId);
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extern Oid get_relation_trigger_oid_compat(HeapTuple heapTuple);
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extern List * PostprocessCreateTriggerStmt(Node *node, const char *queryString);
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extern ObjectAddress CreateTriggerStmtObjectAddress(Node *node, bool missingOk);
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extern void CreateTriggerEventExtendNames(CreateTrigStmt *createTriggerStmt,
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char *schemaName, uint64 shardId);
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extern List * PostprocessAlterTriggerRenameStmt(Node *node, const char *queryString);
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extern void AlterTriggerRenameEventExtendNames(RenameStmt *renameTriggerStmt,
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char *schemaName, uint64 shardId);
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extern List * PostprocessAlterTriggerDependsStmt(Node *node, const char *queryString);
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extern void AlterTriggerDependsEventExtendNames(
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AlterObjectDependsStmt *alterTriggerDependsStmt,
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char *schemaName, uint64 shardId);
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extern List * PreprocessDropTriggerStmt(Node *node, const char *queryString);
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extern void ErrorOutForTriggerIfNotCitusLocalTable(Oid relationId);
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extern void DropTriggerEventExtendNames(DropStmt *dropTriggerStmt, char *schemaName,
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uint64 shardId);
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extern List * CitusLocalTableTriggerCommandDDLJob(Oid relationId, char *triggerName,
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const char *queryString);
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extern Oid GetTriggerFunctionId(Oid triggerId);
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/* cascade_table_operation_for_connected_relations.c */
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/*
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* Flags that can be passed to CascadeOperationForConnectedRelations to specify
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* citus table function to be executed in cascading mode.
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*/
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typedef enum CascadeOperationType
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{
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INVALID_OPERATION = 1 << 0,
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/* execute UndistributeTable on each relation */
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UNDISTRIBUTE_TABLE = 1 << 1,
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/* execute CreateCitusLocalTable on each relation */
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CREATE_CITUS_LOCAL_TABLE = 1 << 2,
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} CascadeOperationType;
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extern void CascadeOperationForConnectedRelations(Oid relationId, LOCKMODE relLockMode,
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CascadeOperationType
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cascadeOperationType);
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extern void ErrorIfAnyPartitionRelationInvolvedInNonInheritedFKey(List *relationIdList);
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extern void ExecuteAndLogDDLCommandList(List *ddlCommandList);
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extern void ExecuteAndLogDDLCommand(const char *commandString);
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/* create_citus_local_table.c */
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extern void CreateCitusLocalTable(Oid relationId, bool cascadeViaForeignKeys);
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extern bool ShouldPropagateSetCommand(VariableSetStmt *setStmt);
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extern void PostprocessVariableSetStmt(VariableSetStmt *setStmt, const char *setCommand);
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#endif /*CITUS_COMMANDS_H */
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