use the latest sql plan to get the cost

Author: chris-sun-star

internal/sql-analyzer/const/sql/sql_plan.go

@@ -83,56 +83,34 @@ const (
 	CheckPlanExistence = `SELECT COUNT(*) FROM sql_plan WHERE TENANT_ID = ? AND SVR_IP = ? AND SVR_PORT = ? AND PLAN_ID = ?`
 	GetPlanStats       = `
 		WITH PlanAgg AS (
-			SELECT
-				TENANT_ID,
-				SVR_IP,
-				SVR_PORT,
-				PLAN_ID,
-				PLAN_HASH,
-				MAX(GMT_CREATE) as GMT_CREATE,
-				SUM(IO_COST) as IO_COST,
-				SUM(CPU_COST) as CPU_COST,
-				SUM(COST) as COST,
-				SUM(REAL_COST) as REAL_COST
-			FROM sql_plan
-			WHERE SQL_ID = ?
-			GROUP BY TENANT_ID, SVR_IP, SVR_PORT, PLAN_ID, PLAN_HASH
-		),
-		PlanStats AS (
-			SELECT
-				PLAN_HASH,
-				CAST(AVG(IO_COST) AS BIGINT) as IO_COST,
-				CAST(AVG(CPU_COST) AS BIGINT) as CPU_COST,
-				CAST(AVG(COST) AS BIGINT) as COST,
-				CAST(AVG(REAL_COST) AS BIGINT) as REAL_COST
-			FROM PlanAgg
-			GROUP BY PLAN_HASH
-		),
-		LatestPlan AS (
 			SELECT
 				TENANT_ID,
 				SVR_IP,
 				SVR_PORT,
 				PLAN_ID,
 				PLAN_HASH,
 				GMT_CREATE,
-				ROW_NUMBER() OVER (PARTITION BY PLAN_HASH ORDER BY GMT_CREATE DESC, PLAN_ID DESC) as rn
-			FROM PlanAgg
+				IO_COST,
+				CPU_COST,
+				COST,
+				REAL_COST,
+				ROW_NUMBER() OVER (PARTITION BY TENANT_ID, SVR_IP, SVR_PORT, PLAN_HASH ORDER BY GMT_CREATE DESC, PLAN_ID DESC) as rn
+			FROM sql_plan
+			WHERE SQL_ID = ? AND ID = 0
 		)
 		SELECT
-			lp.TENANT_ID,
-			lp.SVR_IP,
-			lp.SVR_PORT,
-			lp.PLAN_ID,
-			lp.PLAN_HASH,
-			lp.GMT_CREATE,
-			ps.IO_COST,
-			ps.CPU_COST,
-			ps.COST,
-			ps.REAL_COST
-		FROM LatestPlan lp
-		JOIN PlanStats ps ON lp.PLAN_HASH = ps.PLAN_HASH
-		WHERE lp.rn = 1
+			TENANT_ID,
+			SVR_IP,
+			SVR_PORT,
+			PLAN_ID,
+			PLAN_HASH,
+			GMT_CREATE,
+			IO_COST,
+			CPU_COST,
+			COST,
+			REAL_COST
+		FROM PlanAgg
+		WHERE rn = 1
 	`
 	GetTableInfo = `
 		SELECT 

internal/sql-analyzer/generated/swagger/docs.go

@@ -333,7 +333,8 @@ const docTemplate = `{
                     "type": "integer"
                 },
                 "planHash": {
-                    "type": "integer"
+                    "type": "string",
+                    "example": "0"
                 },
                 "planId": {
                     "type": "integer"

internal/sql-analyzer/generated/swagger/swagger.json

@@ -322,7 +322,8 @@
                     "type": "integer"
                 },
                 "planHash": {
-                    "type": "integer"
+                    "type": "string",
+                    "example": "0"
                 },
                 "planId": {
                     "type": "integer"

internal/sql-analyzer/generated/swagger/swagger.yaml

@@ -62,7 +62,8 @@ definitions:
       ioCost:
         type: integer
       planHash:
-        type: integer
+        example: "0"
+        type: string
       planId:
         type: integer
       realCost: