Here is a list of all struct and union fields with links to the structures/unions they belong to:

- m -

m : BlockSamplerData, bloom_filter, pg_sha1_ctx
made_publication : LogicalRepInfo
made_replslot : LogicalRepInfo
maffixes : IspellDict
magic : _SPI_plan, CachedExpression, CachedPlan, CachedPlanSource, colormap, dsa_segment_header, dshash_table_control, dsm_control_header, FreePageBtreeHeader, FreePageSpanLeader, guts, JsonTableExecContext, MCVList, MVDependencies, MVNDistinct, OAuthValidatorCallbacks, PGShmemHeader, PgStatShared_Common, RelMapFile, ReplicationSlotOnDisk, sequence_magic, SnapBuildOnDisk, xl_xact_prepare
magickNumber : BloomMetaPageData
magicNumber : SpGistMetaPageData
main_data : DecodedXLogRecord
main_data_len : DecodedXLogRecord
main_fn : child_process_kind
maincontext : TuplesortPublic
maintenance_io_concurrency : TableSpaceOpts
maintenance_work_mem_worker : PVShared
mainxid : xl_commit_ts_set
major_version : ClusterInfo
major_version_str : ClusterInfo
make_innerrel_subquery : PgFdwRelationInfo
make_outerrel_subquery : PgFdwRelationInfo
make_readonly : ExprEvalStep
make_ro : ExprEvalStep
manifest : basebackup_options, verifier_context
manifest_buffer : ArchiveStreamState
manifest_checksum : JsonManifestParseState
manifest_checksum_type : basebackup_options
manifest_checksums : cb_options
manifest_contents : bbsink_ops
manifest_ctx : backup_manifest_info, JsonManifestParseIncrementalState, manifest_writer
manifest_file : ArchiveStreamState
manifest_filename : ArchiveStreamState
manifest_files : IncrementalBackupInfo
manifest_inject_streamer : ArchiveStreamState
manifest_size : backup_manifest_info
manifest_system_identifier : JsonManifestParseState
manifest_version : JsonManifestParseState
manifest_wal_ranges : IncrementalBackupInfo
mantissa : floating_decimal_32, floating_decimal_64
map : datapagemap_iterator, DocRepresentation, ExprEvalStep, pg_special_case, RewriteMappingDataEntry, TSConfigCacheEntry
map1 : pg_conv_map
map2 : pg_conv_map
map_failure_msg : TStoreState
map_item_operand : GinChkVal
mapfilenumber : RelMapping
maplen : AttrMap
mapoid : RelMapping
mapped_address : dsa_segment_map, dsm_segment
mapped_check : GinChkVal
mapped_db : xl_heap_rewrite_mapping
mapped_rel : xl_heap_rewrite_mapping
mapped_size : dsm_segment
mapped_xid : xl_heap_rewrite_mapping
mapping_hashvalue : ConnCacheEntry
mappings : RelMapFile, RewriteMappingFile
mapslot : TStoreState
mapTuplesToNodes : spgPickSplitOut
mark_done : StreamCtl
mark_unused_now : PruneState
markfollowright : gistxlogPageSplit
markItemIndex : BTScanOpaqueData
markPos : BTScanOpaqueData
markpos : WindowObjectData
markpos_block : Tuplesortstate
markpos_eof : Tuplesortstate
markpos_offset : Tuplesortstate
MarkPosCustomScan : CustomExecMethods
markptr : WindowObjectData
markTuples : BTScanOpaqueData
markType : ExecRowMark, PlanRowMark
mas_action : MergeActionState
mas_proj : MergeActionState
mas_whenqual : MergeActionState
mask : AioWorkerSubmissionQueue, BackendTypeMask, HashAggSpill, HbaLine
masked : guc_stack
masked_scontext : guc_stack
masked_srole : guc_stack
masklen : HbaLine
match : ClosestMatchState, HASHCTL, HTAB
match_count : SemiAntiJoinFactors
match_locs : regexp_matches_ctx, test_regex_ctx
match_prefix : exclude_list_item
match_size_drop : PGLZ_Strategy
match_size_good : PGLZ_Strategy
matchBitmap : GinScanEntryData
matched : manifest_file, PatternInfo
matching : BipartiteMatchState
matchIterator : GinScanEntryData
matchKind : MergeAction, MergeWhenClause
matchNode : spgChooseOut
matchNtuples : GinScanEntryData
matchOffsets : GinScanEntryData
matchorig : DictSyn
matchResult : GinScanEntryData
matchsynonyms : DictSyn
materialize : TupleTableSlotOps
materialize_inner : MergePath
max : colormap, config_int, config_real, relopt_int, relopt_real, SimpleStats, subre
max_attr : RelOptInfo
max_avail : BTIndexStat, BTPageStat
max_block_id : DecodedXLogRecord
max_bucket : HASHHDR
max_buckets : HSpool, TuplesortIndexHashArg
max_bytes : VacDeadItemsInfo
max_calls : FuncCallContext
max_colno_needed : AggState
max_d : ClosestMatchState
max_dispatch : PartitionTupleRouting
max_dsize : HASHCTL, HASHHDR
max_eager_freeze_failure_rate : VacuumParams
max_fields : CopyFromStateData
max_hazard : max_parallel_hazard_context
max_inflight : LsnReadQueue
max_input_size : PGLZ_Strategy
max_interesting : max_parallel_hazard_context
max_ios : ReadStream
max_key_size : ossl_cipher
max_kw_len : ScanKeywordList
max_length : List
max_locks_per_xact : ControlFileData, xl_parameter_change
max_message_length : pg_be_sasl_mech
max_partitions : PartitionTupleRouting
max_pending : WritebackContext
max_pinned_buffers : ReadStream
max_prepared_xacts : ControlFileData, xl_parameter_change
max_requests : CheckpointerShmemStruct
max_rounds : generator
max_segment_size : dsa_area_control
max_size : LogicalTape
max_tids : ItemArray
max_time : Counters
max_total_segment_size : dsa_area_control
max_vacuums : BTVacInfo
max_val : RT_RADIX_TREE_CONTROL
max_vars : Variables
max_wal_senders : ControlFileData, xl_parameter_change
max_worker_processes : ControlFileData, xl_parameter_change
maxAlign : ControlFileData
maxarrayrows : colormap
maxBlockSize : AllocSetContext, BumpContext, GenerationContext
maxbufsize : BTVacState
maxChildXids : TransactionStateData
maxChunkSize : pg_conn
MaxConnections : ControlFileData, xl_parameter_change
maxcount : GinEntryAccumulator
maxdepth : TSVectorStat
maxDiskSpaceUsed : IncrementalSortGroupInfo
maxDumpId : _archiveHandle
maxentries : TBMSharedIteratorState, TIDBitmap
maxfd : socket_set
maxitems : dsm_control_header, GinBuffer
maxKnownAssignedXids : ProcArrayStruct
maxlen : DictInt, HashMemoryChunkData, PQExpBufferData, StringInfoData
maxLockOwners : LOCALLOCK
maxlocks : BlockedProcsData
maxmatchall : cnfa, nfa
maxmblen : pg_wchar_tbl
maxMemorySpaceUsed : IncrementalSortGroupInfo
maxMsgNum : SISeg
maxmsgs : InvalMessageArray
maxoff : BloomPageOpaqueData, BTReadPageState, GinPageOpaqueData
maxParallelHazard : PlannerGlobal
maxpids : BlockedProcsData
maxpostingsize : BTDedupStateData
maxprocs : BlockedProcsData
maxProcs : ProcArrayStruct
maxquerydepth : AfterTriggersData
maxrate : basebackup_options
maxrefs : ObjectAddresses
maxRemoteVersion : Archive
maxScale : NumericAggState
maxScaleCount : NumericAggState
maxsets : AggState
maxSpace : Tuplesortstate, Tuplestorestate
maxSpaceStatus : Tuplesortstate
maxsplits : FindSplitData
maxTapes : Tuplesortstate
maxtransdepth : AfterTriggersData
maxv : SequenceItem
maxval : ExpandedRange
maxvalues : KeyArray, Ranges, SerializedRanges
maxWinRef : WindowFuncLists
maxwritten_clean : PgStat_BgWriterStats
maybe_needed : GlobalVisState
maybe_sleeping : Latch
mb2wchar_with_len : pg_wchar_tbl
mblen : pg_wchar_tbl
mbverifychar : pg_wchar_tbl
mbverifystr : pg_wchar_tbl
mCompoundAffixFlag : IspellDict
mcontext : ArrayBuildState, ArrayBuildStateArr
mcxt : BlockRefTable, DomainIOData, IncrementalBackupInfo, JsonTablePlanState, JsonUniqueBuilderState, PLyCursorObject, PLyDatumToOb, PLyObToDatum, PLyPlanObject, PLyProcedure, PopulateArrayContext, TIDBitmap
md : EphemeralNamedRelationData, px_hmac
md5 : pg_cryptohash_ctx
md5_buf : pg_md5_ctx
md5_count : pg_md5_ctx
md5_count64 : pg_md5_ctx
md5_count8 : pg_md5_ctx
md5_i : pg_md5_ctx
md5_st : pg_md5_ctx
md5_state32 : pg_md5_ctx
md5_state8 : pg_md5_ctx
md_num_open_segs : SMgrRelationData
md_seg_fds : SMgrRelationData
mdc_avail : MDCBufData
mdc_buf : MDCBufData
mdc_checked : PGP_Context
mdc_ctx : PGP_Context
mdfd_segno : _MdfdVec
mdfd_vfd : _MdfdVec
mean : normal_rand_fctx
mean_query_len : pgssSharedState
mean_time : Counters
mem_allocated : MemoryContextData
mem_limit : MemoizeState
mem_peak : MemoizeInstrumentation
mem_used : IntegerSet, MemoizeState
member : astreamer_recovery_injector, astreamer_tar_parser, sa
member_names : SyncRepConfigData
members : catclist, ECPGtype, mXactCacheEnt, relopt_enum, SH_TYPE, xl_multixact_create
memcxt : BulkWriteState, PartitionTupleRouting
memory : ExplainState
memorySize : pg_result
memtupcount : Tuplesortstate, Tuplestorestate
memtupdeleted : Tuplestorestate
memtuples : Tuplesortstate, Tuplestorestate
memtupsize : Tuplesortstate, Tuplestorestate
mergeActionList : Query
mergeActionLists : ModifyTable, ModifyTablePath
mergeclause_list : JoinPathExtraData
mergeclauses : MergeJoin
merged : PartitionMap
merged_indexes : PartitionMap
mergeJoinCondition : Query
mergeJoinConditions : ModifyTable, ModifyTablePath
mergeplans : MergeAppend, MergeAppendState
mergeWhenClauses : MergeStmt
message : ErrorData, PLpgSQL_stmt_assert, PLpgSQL_stmt_raise, ReorderBuffer, ReorderBufferChange, xl_logical_message, xl_testcustomrmgrs_message
message_cb : OutputPluginCallbacks
message_id : ErrorData
message_level : IndexVacuumInfo
message_size : ReorderBufferChange, xl_logical_message, xl_testcustomrmgrs_message
messages : PGOutputData
meta : Command
meta_data_size : SharedTuplestore
metadata : ginxlogDeleteListPages, ginxlogUpdateMeta
method : check_network_data, RangeTableSample
methods : CustomPath, CustomScan, CustomScanState, MemoryContextData
metrics : SerializeDestReceiver
mfile : astreamer_verify
mi : TmFromChar
mid : xl_multixact_create
midvrule : printTextLineFormat
midvrule_blank : printTextFormat
midvrule_nl : printTextFormat
midvrule_wrap : printTextFormat
millis : SystemTimeSamplerData
min : config_int, config_real, relopt_int, relopt_real, SimpleStats, subre
min_agglevel : check_agg_arguments_context
min_attr : RelOptInfo
min_comp_rate : PGLZ_Strategy
min_d : ClosestMatchState
min_input_size : PGLZ_Strategy
min_lefthand : SpecialJoinInfo
min_mxid_age : vacuumingOptions
min_righthand : SpecialJoinInfo
min_rounds : generator
min_sublevels_up : IncrementVarSublevelsUp_context
min_time : Counters
min_varlevel : check_agg_arguments_context
min_xid_age : vacuumingOptions
minbits : GistInetKey
minfirstrightsz : FindSplitData
minhdr : MinimalTupleTableSlot
minmatchall : cnfa, nfa
minmax : ExprEvalStep
minmax_aggs : PlannerInfo
minmax_stats_since : pgssEntry
minMsgNum : SISeg
minmxid : _tableInfo
minoff : BTReadPageState
minRecoveryPoint : ControlFileData
minRecoveryPointTLI : ControlFileData
minRemoteVersion : Archive
minrows : VacAttrStats
mintuple : MemoizeTuple, MinimalTupleTableSlot
minv : SequenceItem
minval : ExpandedRange
missed_dead_pages : LVRelState
missed_dead_tuples : LVRelState
missing : TupleConstr
missing_ok : AlterDomainStmt, AlterObjectSchemaStmt, AlterSeqStmt, AlterStatsStmt, AlterTableCmd, AlterTableStmt, AlterTSConfigurationStmt, DropdbStmt, DropRoleStmt, DropStmt, DropSubscriptionStmt, DropTableSpaceStmt, DropUserMappingStmt, RenameStmt
missing_stats_only : vacuumingOptions
missingContrecPtr : EndOfWalRecoveryInfo, XLogReaderState
mj_Clauses : MergeJoinState
mj_ConstFalseJoin : MergeJoinState
mj_ExtraMarks : MergeJoinState
mj_FillInner : MergeJoinState
mj_FillOuter : MergeJoinState
mj_InnerEContext : MergeJoinState
mj_InnerTupleSlot : MergeJoinState
mj_JoinState : MergeJoinState
mj_MarkedTupleSlot : MergeJoinState
mj_MatchedInner : MergeJoinState
mj_MatchedOuter : MergeJoinState
mj_NullInnerTupleSlot : MergeJoinState
mj_NullOuterTupleSlot : MergeJoinState
mj_NumClauses : MergeJoinState
mj_OuterEContext : MergeJoinState
mj_OuterTupleSlot : MergeJoinState
mj_SkipMarkRestore : MergeJoinState
mm : TmFromChar
mmaggregates : MinMaxAggPath
MMapper : llvm::backport::SectionMemoryManager
mock_authentication_nonce : ControlFileData
mod_since_analyze : PgStat_StatTabEntry
mod_stmt : PLpgSQL_stmt_execsql
mod_stmt_set : PLpgSQL_stmt_execsql
mode : _archiveHandle, astreamer_member, FunctionParameter, LOCALLOCKTAG, LockStmt, LWLockHandle, PGP_S2K, PgStat_Snapshot, SPICallbackArg, TAR_MEMBER, TmFromChar
modifieditems : leafSegmentInfo
module_pathname : ExtensionControlFile
modulus : PartitionBoundSpec, PartitionHashBound
moff : xl_multixact_create
mon : lc_time_T
monotonic : SupportRequestWFuncMonotonic
month : Interval, interval, lc_time_T
more_partitions : WindowAggState
moreLeft : BTScanPosData
moreRight : BTScanPosData
mq_bytes_read : shm_mq
mq_bytes_written : shm_mq
mq_detached : shm_mq
mq_handle : ParallelApplyWorkerInfo
mq_mutex : shm_mq
mq_receiver : shm_mq
mq_ring : shm_mq
mq_ring_offset : shm_mq
mq_ring_size : shm_mq
mq_sender : shm_mq
mqh_buffer : shm_mq_handle
mqh_buflen : shm_mq_handle
mqh_consume_pending : shm_mq_handle
mqh_context : shm_mq_handle
mqh_counterparty_attached : shm_mq_handle
mqh_expected_bytes : shm_mq_handle
mqh_handle : shm_mq_handle
mqh_length_word_complete : shm_mq_handle
mqh_partial_bytes : shm_mq_handle
mqh_queue : shm_mq_handle
mqh_segment : shm_mq_handle
mqh_send_pending : shm_mq_handle
ms : TmFromChar
ms_heap : MergeAppendState
ms_initialized : MergeAppendState
ms_nkeys : MergeAppendState
ms_nplans : MergeAppendState
ms_prune_state : MergeAppendState
ms_slots : MergeAppendState
ms_sortkeys : MergeAppendState
ms_valid_subplans : MergeAppendState
msfcollid : MergeSupportFunc
msftype : MergeSupportFunc
msg : ReorderBufferChange
msgbuffer : bbsink_copystream
msgnumLock : SISeg
msgs : InvalMessageArray, xl_heap_inplace, xl_invalidations, xl_xact_invals, xl_xact_parsed_commit
mspell : IspellDict
mstatus : MemoizeState
mt_done : ModifyTableState
mt_epqstate : ModifyTableState
mt_lastResultIndex : ModifyTableState
mt_lastResultOid : ModifyTableState
mt_merge_action : ModifyTableState
mt_merge_deleted : ModifyTableState
mt_merge_inserted : ModifyTableState
mt_merge_pending_not_matched : ModifyTableState
mt_merge_subcommands : ModifyTableState
mt_merge_updated : ModifyTableState
mt_mergeActionLists : ModifyTableState
mt_mergeJoinConditions : ModifyTableState
mt_nrels : ModifyTableState
mt_oc_transition_capture : ModifyTableState
mt_padding : MinimalTupleData
mt_partition_tuple_routing : ModifyTableState
mt_resultOidAttno : ModifyTableState
mt_resultOidHash : ModifyTableState
mt_root_tuple_slot : ModifyTableState
mt_transition_capture : ModifyTableState
mt_updateColnosLists : ModifyTableState
mtstate : ApplyExecutionData, ModifyTableContext
multi : mXactCacheEnt, NUMDesc
multi_call_memory_ctx : FuncCallContext
multi_insert : TableAmRoutine
multidims : ExprEvalStep
multiexpr_params : PlannerInfo
multiexpr_subplans : ExprSetupInfo
multiInsertBuffers : CopyMultiInsertInfo
multiplier : unit_conversion
multirangetypid : MultirangeType
multiStopLimit : MultiXactStateData
multiVacLimit : MultiXactStateData
multiWarnLimit : MultiXactStateData
multiWrapLimit : MultiXactStateData
multixact_freeze_max_age : AutoVacOpts
multixact_freeze_min_age : AutoVacOpts, VacuumParams
multixact_freeze_table_age : AutoVacOpts, VacuumParams
MultiXactCutoff : VacuumCutoffs
must_return_tuples : SPIExecuteOptions
mutable : JsonPathMutableContext
mutex : Barrier, BrinShared, BTShared, ConditionVariable, FastPathStrongRelationLockData, FixedParallelState, FreeListData, GinBuildShared, ParallelApplyWorkerShared, ParallelBitmapHeapState, pg_pthread_barrier, pgssEntry, pgssSharedState, ReplicationSlot, SharedFileSet, Sharedsort, SlotSyncCtxStruct, test_shm_mq_header, WaitEventCustomCounterData, WalRcvData, WalSnd
mux : async_ctx
my_cache : catclist, catctup
my_level : TransInvalidationInfo
myAH : DumpSignalInformation
mycid : CopyMultiInsertInfo
mydest : _DestReceiver
myfile : Tuplestorestate
myinfo : DR_printtup
myLock : PROCLOCKTAG
myProc : PROCLOCKTAG
myProcLocks : PGPROC
myTarget : PREDICATELOCKTAG
myXact : PREDICATELOCKTAG, SERIALIZABLEXID
myXmin : spgBulkDeleteState