query designer SQL generator

packages/sqltree/src/dumpSqlCondition.ts

@@ -2,6 +2,7 @@ import { SqlDumper } from 'dbgate-types';
 import { Condition, BinaryCondition } from './types';
 import { dumpSqlExpression } from './dumpSqlExpression';
 import { link } from 'fs';
+import { dumpSqlSelect } from './dumpSqlCommand';
 
 export function dumpSqlCondition(dmp: SqlDumper, condition: Condition) {
   switch (condition.conditionType) {
@@ -30,7 +31,7 @@ export function dumpSqlCondition(dmp: SqlDumper, condition: Condition) {
       break;
     case 'and':
     case 'or':
-      dmp.putCollection(` ^${condition.conditionType} `, condition.conditions, cond => {
+      dmp.putCollection(` ^${condition.conditionType} `, condition.conditions, (cond) => {
         dmp.putRaw('(');
         dumpSqlCondition(dmp, cond);
         dmp.putRaw(')');
@@ -51,5 +52,15 @@ export function dumpSqlCondition(dmp: SqlDumper, condition: Condition) {
       dumpSqlCondition(dmp, condition.condition);
       dmp.put(')');
       break;
+    case 'exists':
+      dmp.put('^exists (');
+      dumpSqlSelect(dmp, condition.subQuery);
+      dmp.put(')');
+      break;
+    case 'notExists':
+      dmp.put('^not ^exists (');
+      dumpSqlSelect(dmp, condition.subQuery);
+      dmp.put(')');
+      break;
   }
 }

packages/sqltree/src/types.ts

@@ -82,7 +82,23 @@ export interface CompoudCondition {
   conditions: Condition[];
 }
 
-export type Condition = BinaryCondition | NotCondition | TestCondition | CompoudCondition | LikeCondition;
+export interface ExistsCondition {
+  conditionType: 'exists';
+  subQuery: Select;
+}
+export interface NotExistsCondition {
+  conditionType: 'notExists';
+  subQuery: Select;
+}
+
+export type Condition =
+  | BinaryCondition
+  | NotCondition
+  | TestCondition
+  | CompoudCondition
+  | LikeCondition
+  | ExistsCondition
+  | NotExistsCondition;
 
 export interface Source {
   name?: NamedObjectInfo;