Revert to testing against mssql 2017, attempt to get relationship aggreggation working.

packages/backend-core/src/sql/sql.ts

@@ -913,30 +913,25 @@ class InternalBuilder {
       const fieldList: string = relationshipFields
         .map(field => jsonField(field))
         .join(",")
-      let rawJsonArray: Knex.Raw, limit: number
+      let select: Knex.Raw, limit: number
       switch (sqlClient) {
         case SqlClient.SQL_LITE:
-          rawJsonArray = this.knex.raw(
-            `json_group_array(json_object(${fieldList}))`
-          )
+          select = this.knex.raw(`json_group_array(json_object(${fieldList}))`)
           limit = getBaseLimit()
           break
         case SqlClient.POSTGRES:
-          rawJsonArray = this.knex.raw(
-            `json_agg(json_build_object(${fieldList}))`
-          )
+          select = this.knex.raw(`json_agg(json_build_object(${fieldList}))`)
           limit = 1
           break
         case SqlClient.MY_SQL:
         case SqlClient.ORACLE:
-          rawJsonArray = this.knex.raw(
-            `json_arrayagg(json_object(${fieldList}))`
-          )
+          select = this.knex.raw(`json_arrayagg(json_object(${fieldList}))`)
           limit = getBaseLimit()
           break
         case SqlClient.MS_SQL:
-          rawJsonArray = this.knex.raw(`json_array(json_object(${fieldList}))`)
-          limit = 1
+          // Cursed, needs some code later instead
+          select = this.knex.raw(`*`)
+          limit = getBaseLimit()
           break
         default:
           throw new Error(`JSON relationships not implement for ${this.client}`)
@@ -944,8 +939,8 @@ class InternalBuilder {
       // SQL Server uses TOP - which performs a little differently to the normal LIMIT syntax
       // it reduces the result set rather than limiting how much data it filters over
       const primaryKey = `${toAlias}.${toPrimary || toKey}`
-      let subQuery = this.knex
-        .select(rawJsonArray)
+      let subQuery: Knex.QueryBuilder | Knex.Raw = this.knex
+        .select(select)
         .from(toTableWithSchema)
         .limit(limit)
         // add sorting to get consistent order
@@ -985,6 +980,13 @@ class InternalBuilder {
       if (this.client === SqlClient.SQL_LITE) {
         subQuery = this.addJoinFieldCheck(subQuery, relationship)
       }
+
+      if (this.client === SqlClient.MS_SQL) {
+        subQuery = this.knex.raw(
+          `(SELECT a.* FROM (${subQuery}) AS a FOR JSON PATH)`
+        )
+      }
+
       query = query.select({ [relationship.column]: subQuery })
     }
     return query

packages/server/datasource-sha.env

@@ -1,4 +1,4 @@
-MSSQL_SHA=sha256:c4369c38385eba011c10906dc8892425831275bb035d5ce69656da8e29de50d8
+MSSQL_SHA=sha256:3b913841850a4d57fcfcb798be06acc88ea0f2acc5418bc0c140a43e91c4a545
 MYSQL_SHA=sha256:9de9d54fecee6253130e65154b930978b1fcc336bcc86dfd06e89b72a2588ebe
 POSTGRES_SHA=sha256:bd0d8e485d1aca439d39e5ea99b931160bd28d862e74c786f7508e9d0053090e
 MONGODB_SHA=sha256:afa36bca12295b5f9dae68a493c706113922bdab520e901bd5d6c9d7247a1d8d

packages/server/src/integrations/microsoftSqlServer.ts

@@ -343,9 +343,9 @@ class SqlServerIntegration extends Sql implements DatasourcePlus {
         err.number
       )
       if (readableMessage) {
-        throw new Error(readableMessage)
+        throw new Error(readableMessage, { cause: err })
       } else {
-        throw new Error(err.message as string)
+        throw new Error(err.message as string, { cause: err })
       }
     }
   }