From 24486cdaa22958c3ae33acc2a67341cb3dbbd590 Mon Sep 17 00:00:00 2001
From: chack-os <obed.santisteban@gmail.com>
Date: Mon, 1 Aug 2022 19:42:45 -0600
Subject: [PATCH 1/2] allow in from a union select

---
 src/sqlParser.jison | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sqlParser.jison b/src/sqlParser.jison
index 4a8efbc..a7abaef 100644
--- a/src/sqlParser.jison
+++ b/src/sqlParser.jison
@@ -587,6 +587,7 @@ index_hint
 table_factor
   : identifier partitionOpt aliasOpt index_hint_list_opt { $$ = { type: 'TableFactor', value: $1, partition: $2, alias: $3.alias, hasAs: $3.hasAs, indexHintOpt: $4 } }
   | '(' selectClause ')' aliasOpt { $$ = { type: 'TableFactor', value: { type: 'SubQuery', value: $2 }, alias: $4.alias, hasAs: $4.hasAs} }
+  | '(' unionClauseNotParenthesized ')' aliasOpt { $$ = { type: 'TableFactor', value: { type: 'SubQuery', value: $2 }, alias: $4.alias, hasAs: $4.hasAs} }
   | '(' table_references ')' { $$ = $2; $$.hasParentheses = true }
   ;
 place_holder

From ad70ef17df70d6306becf814780190c473ed9fca Mon Sep 17 00:00:00 2001
From: chack-os <obed.santisteban@gmail.com>
Date: Mon, 1 Aug 2022 20:00:57 -0600
Subject: [PATCH 2/2] test select from a union select

---
 test/main.test.js | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/test/main.test.js b/test/main.test.js
index 2ee9c1b..2029b83 100644
--- a/test/main.test.js
+++ b/test/main.test.js
@@ -436,4 +436,45 @@ describe('select grammar support', function () {
   it('test IDENTIFIER', function () {
     testParser('select `aa#sfs`(a) as \'A A\' from z');
   });
+
+  it('test from with union select', function (){
+    testParser(`select 
+    (select min(actividad) 
+      from  
+      ( select client_id, 
+          (select code_description from m_code_value where code_id =61 and id=LActividadEconomica_cd_own_business_main_activity) actividad, 
+          estimated_amount_income_employer monto   
+        from m_clientDetalleNegocios 
+        union all  
+        select  client_id, 
+          (select code_description from m_code_value where code_id =47 and id=Ltipoingreso_cd_income_type) actividad , other_incomes_estimated_amount monto 
+        from m_clientDetalleOtrosIngresos 
+        union all 
+        select  client_id, case r.Lsector_cd_Sector when 154 then 755 else 754 end actividad, 
+        r.estimated_incomes_amount  monto 
+        from m_clientDetalleRelLaboral r   
+      )  actividades 
+      where monto = 
+      ( select max(monto) 
+        from  
+        (         
+          select client_id, 
+            (select code_description 
+            from m_code_value where code_id =61 and id=LActividadEconomica_cd_own_business_main_activity) actividad, estimated_amount_income_employer monto   
+          from m_clientDetalleNegocios         
+          union all          
+          select  client_id, 
+            (select code_description from m_code_value where code_id =47 and id=Ltipoingreso_cd_income_type) actividad , other_incomes_estimated_amount monto 
+          from m_clientDetalleOtrosIngresos         
+          union all         
+          select  client_id, case r.Lsector_cd_Sector when 154 then 755 else 754 end actividad, r.estimated_incomes_amount  monto 
+          from m_clientDetalleRelLaboral r         
+        ) maxact         
+        where client_id = actividades.client_id        
+      ) 
+      and client_id =cli.id
+    ) as c55017 
+    from m_client cli`)
+  })
+
 });