digraph { graph [rankdir = "LR", label = "Plan Tree: SELECT key FROM test WHERE key = 3 FOR UPDATE;"] node [shape=record,style=filled,fillcolor=gray95] edge [arrowtail=empty] 23[label = " Alias (23)|aliasname: test| colnames: "] 25[label = " String (25)|key"] 24[label = " List (24)|<1> [0]|<2> [1]"] 26[label = " String (26)|value"] 22[label = " RangeTblEntry(RTE) (22)| eref: |rtekind: RTE_RELATION|relid: 17242|relkind: 114|inh: false|inFromCl: true|requiredPerms: 6|selectedCols: (b 9)|modifiedCols: (b)"] 8[label = " SeqScan (8)|startup_cost: 0.00|total_cost: 36.75|plan_rows: 11|plan_width: 10| targetlist: | qual: |extParam: (b 0)|allParam: (b 0)|scanrelid: 1"] 20[label = " PlanRowMark (20)|rti: 1|prti: 1|rowmarkId: 1|markType: ROW_MARK_EXCLUSIVE|noWait: false|isParent: false"] 19[label = " List (19)|<1> [0]"] 2[label = " LockRows (2)|startup_cost: 0.00|total_cost: 36.86|plan_rows: 11|plan_width: 10| targetlist: | lefttree: |extParam: (b)|allParam: (b)| rowMarks: |epqParam: 0"] 1[label = " PlannedStmt (1)|commandType: CMD_SELECT|queryId: 0|hasReturning: false|hasModifyingCTE: false|canSetTag: true|transientPlan: false| planTree: | rtable: |rewindPlanIDs: (b)| rowMarks: | relationOids: |nParamExec: 1"] 21[label = " List (21)|<1> [0]"] 29[label = " OidList (29)|17242 "] 28[label = " PlanRowMark (28)|rti: 1|prti: 1|rowmarkId: 1|markType: ROW_MARK_EXCLUSIVE|noWait: false|isParent: false"] 27[label = " List (27)|<1> [0]"] 23:colnames -> 24:head [headlabel = "23", taillabel = "24"] 24:1 -> 25:head [headlabel = "24", taillabel = "25"] 24:2 -> 26:head [headlabel = "24", taillabel = "26"] 22:eref -> 23:head [headlabel = "22", taillabel = "23"] 8:targetlist -> 9:head [headlabel = "8", taillabel = "9"] 8:qual -> 14:head [headlabel = "8", taillabel = "14"] 19:1 -> 20:head [headlabel = "19", taillabel = "20"] 2:lefttree -> 8:head [headlabel = "2", taillabel = "8"] 2:rowMarks -> 19:head [headlabel = "2", taillabel = "19"] 2:targetlist -> 3:head [headlabel = "2", taillabel = "3"] 1:planTree -> 2:head [headlabel = "1", taillabel = "2"] 1:rtable -> 21:head [headlabel = "1", taillabel = "21"] 1:relationOids -> 29:head [headlabel = "1", taillabel = "29"] 1:rowMarks -> 27:head [headlabel = "1", taillabel = "27"] 21:1 -> 22:head [headlabel = "21", taillabel = "22"] 27:1 -> 28:head [headlabel = "27", taillabel = "28"] subgraph cluster_0 { label = "Target List"; 10[label = " TargetEntry (10)| expr: |resno: 1|resname: key|resorigtbl: 17242|resorigcol: 1|resjunk: false"] 11[label = " Var (11)|varno: 1|varattno: 1|vartype: 23|vartypmod: -1|varlevelsup: 0|varnoold: 1|varoattno: 1|location: 7"] 9[label = " List (9)|<1> [0]|<2> [1]"] 13[label = " Var (13)|varno: 1|varattno: -1|vartype: 27|vartypmod: -1|varlevelsup: 0|varnoold: 1|varoattno: -1"] 12[label = " TargetEntry (12)| expr: |resno: 2|resname: ctid1|resjunk: true"] 10:expr -> 11:head [headlabel = "10", taillabel = "11"] 9:1 -> 10:head [headlabel = "9", taillabel = "10"] 9:2 -> 12:head [headlabel = "9", taillabel = "12"] 12:expr -> 13:head [headlabel = "12", taillabel = "13"] } subgraph cluster_1 { label = "Express Tree"; 17[label = " Var (17)|varno: 1|varattno: 1|vartype: 23|vartypmod: -1|varlevelsup: 0|varnoold: 1|varoattno: 1|location: 27"] 16[label = " List (16)|<1> [0]|<2> [1]"] 18[label = " Const (18)|consttype: 23|consttypmod: -1|constlen: 4|constbyval: true|constisnull: false|location: 33"] 15[label = " OpExpr (15)|opno: 96|opfuncid: 65|opresulttype: 16|opretset: false| args: |location: 31"] 14[label = " List (14)|<1> [0]"] 16:1 -> 17:head [headlabel = "16", taillabel = "17"] 16:2 -> 18:head [headlabel = "16", taillabel = "18"] 15:args -> 16:head [headlabel = "15", taillabel = "16"] 14:1 -> 15:head [headlabel = "14", taillabel = "15"] } subgraph cluster_2 { label = "Target List"; 5[label = " Var (5)|varno: OUTER_VAR|varattno: 1|vartype: 23|vartypmod: -1|varlevelsup: 0|varnoold: 1|varoattno: 1"] 4[label = " TargetEntry (4)| expr: |resno: 1|resname: key|resorigtbl: 17242|resorigcol: 1|resjunk: false"] 3[label = " List (3)|<1> [0]|<2> [1]"] 7[label = " Var (7)|varno: OUTER_VAR|varattno: 2|vartype: 27|vartypmod: -1|varlevelsup: 0|varnoold: 1|varoattno: -1"] 6[label = " TargetEntry (6)| expr: |resno: 2|resname: ctid1|resjunk: true"] 4:expr -> 5:head [headlabel = "4", taillabel = "5"] 3:1 -> 4:head [headlabel = "3", taillabel = "4"] 3:2 -> 6:head [headlabel = "3", taillabel = "6"] 6:expr -> 7:head [headlabel = "6", taillabel = "7"] } }