Fixes issue #2616 - this is a slightly complex fix and handles a few other issues with mysql (around returning on creation of a row and relationships) - a new mechanism is now used for pagination and limiting which makes sure the limits are applied to the outer table rather than the combination of the outer and the joined.

packages/server/scripts/integrations/postgres/docker-compose.yml

@@ -15,7 +15,7 @@ services:
       - ./init.sql:/docker-entrypoint-initdb.d/init.sql
 
   pgadmin:
-    container_name: pgadmin
+    container_name: pgadmin-pg
     image: dpage/pgadmin4
     restart: always
     environment:

packages/server/src/api/controllers/row/ExternalRequest.ts

@@ -544,6 +544,9 @@ module External {
         extra: {
           idFilter: buildFilters(id || generateIdForRow(row, table), {}, table),
         },
+        meta: {
+          table,
+        }
       }
       // can't really use response right now
       const response = await makeExternalQuery(appId, json)

packages/server/src/definitions/datasource.ts

@@ -1,3 +1,5 @@
+import {Table} from "./common";
+
 export enum Operation {
   CREATE = "CREATE",
   READ = "READ",
@@ -136,6 +138,9 @@ export interface QueryJson {
   sort?: SortJson
   paginate?: PaginationJson
   body?: object
+  meta?: {
+    table?: Table,
+  }
   extra?: {
     idFilter?: SearchFilters
   }

packages/server/src/integrations/base/sql.ts

@@ -1,7 +1,5 @@
 import { Knex, knex } from "knex"
 const BASE_LIMIT = 5000
-// if requesting a single row then need to up the limit for the sake of joins
-const SINGLE_ROW_LIMIT = 100
 import {
   QueryJson,
   SearchFilters,
@@ -146,46 +144,48 @@ function buildCreate(
 function buildRead(knex: Knex, json: QueryJson, limit: number): KnexQuery {
   let { endpoint, resource, filters, sort, paginate, relationships } = json
   const tableName = endpoint.entityId
-  let query: KnexQuery = knex(tableName)
   // select all if not specified
   if (!resource) {
     resource = { fields: [] }
   }
+  let selectStatement: string|string[] = "*"
   // handle select
   if (resource.fields && resource.fields.length > 0) {
     // select the resources as the format "table.columnName" - this is what is provided
     // by the resource builder further up
-    query = query.select(resource.fields.map(field => `${field} as ${field}`))
-  } else {
-    query = query.select("*")
+    selectStatement = resource.fields.map(field => `${field} as ${field}`)
+  }
+  let foundLimit = limit || BASE_LIMIT
+  // handle pagination
+  let foundOffset: number | null = null
+  if (paginate && paginate.page && paginate.limit) {
+    // @ts-ignore
+    const page = paginate.page <= 1 ? 0 : paginate.page - 1
+    const offset = page * paginate.limit
+    foundLimit = paginate.limit
+    foundOffset = offset
+  } else if (paginate && paginate.limit) {
+    foundLimit = paginate.limit
+  }
+  // start building the query
+  let query: KnexQuery = knex(tableName).limit(foundLimit)
+  if (foundOffset) {
+    query = query.offset(foundOffset)
   }
-  // handle where
-  query = addFilters(tableName, query, filters)
-  // handle join
-  query = addRelationships(query, tableName, relationships)
-  // handle sorting
   if (sort) {
     for (let [key, value] of Object.entries(sort)) {
       const direction = value === SortDirection.ASCENDING ? "asc" : "desc"
       query = query.orderBy(key, direction)
     }
   }
-  let foundLimit = limit || BASE_LIMIT
-  // handle pagination
-  if (paginate && paginate.page && paginate.limit) {
+  query = addFilters(tableName, query, filters)
+  // @ts-ignore
+  let preQuery: KnexQuery = knex({
     // @ts-ignore
-    const page = paginate.page <= 1 ? 0 : paginate.page - 1
-    const offset = page * paginate.limit
-    foundLimit = paginate.limit
-    query = query.offset(offset)
-  } else if (paginate && paginate.limit) {
-    foundLimit = paginate.limit
-  }
-  if (foundLimit === 1) {
-    foundLimit = SINGLE_ROW_LIMIT
-  }
-  query = query.limit(foundLimit)
-  return query
+    [tableName]: query,
+  }).select(selectStatement)
+  // handle joins
+  return addRelationships(preQuery, tableName, relationships)
 }
 
 function buildUpdate(

packages/server/src/integrations/mysql.ts

@@ -104,7 +104,7 @@ module MySQLModule {
     client: any,
     query: SqlQuery,
     connect: boolean = true
-  ): Promise<any[]> {
+  ): Promise<any[]|any> {
     // Node MySQL is callback based, so we must wrap our call in a promise
     return new Promise((resolve, reject) => {
       if (connect) {
@@ -238,6 +238,23 @@ module MySQLModule {
       return internalQuery(this.client, input, false)
     }
 
+    // when creating if an ID has been inserted need to make sure
+    // the id filter is enriched with it before trying to retrieve the row
+    checkLookupKeys(results: any, json: QueryJson) {
+      if (!results?.insertId || !json.meta?.table || !json.meta.table.primary) {
+        return json
+      }
+      const primaryKey = json.meta.table.primary?.[0]
+      json.extra = {
+        idFilter: {
+          equal: {
+            [primaryKey]: results.insertId
+          },
+        }
+      }
+      return json
+    }
+
     async query(json: QueryJson) {
       const operation = this._operation(json)
       this.client.connect()
@@ -250,7 +267,7 @@ module MySQLModule {
       const results = await internalQuery(this.client, input, false)
       // same as delete, manage returning
       if (operation === Operation.CREATE || operation === Operation.UPDATE) {
-        row = this.getReturningRow(json)
+        row = this.getReturningRow(this.checkLookupKeys(results, json))
       }
       this.client.end()
       if (operation !== Operation.READ) {