From b66cc2b150e0bb942cf6d18c1d71075d502065e8 Mon Sep 17 00:00:00 2001
From: Mateen0007 <mateenwriter772@gmail.com>
Date: Sun, 31 Aug 2025 16:03:36 +0500
Subject: [PATCH 1/3] Create SQL_Server.sql

---
 sql-queries-12/Exclude_a_Column_in_SQL/SQL_Server.sql | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 sql-queries-12/Exclude_a_Column_in_SQL/SQL_Server.sql

diff --git a/sql-queries-12/Exclude_a_Column_in_SQL/SQL_Server.sql b/sql-queries-12/Exclude_a_Column_in_SQL/SQL_Server.sql
new file mode 100644
index 00000000..31f3b3b9
--- /dev/null
+++ b/sql-queries-12/Exclude_a_Column_in_SQL/SQL_Server.sql
@@ -0,0 +1,9 @@
+-- Excludes gpa column from the student table 
+DECLARE @sql NVARCHAR(MAX);
+SELECT @sql =
+    'SELECT ' + STRING_AGG(QUOTENAME(name), ', ')
+    + ' FROM dbo.student'
+FROM sys.columns
+WHERE object_id = OBJECT_ID('dbo.student')
+  AND name <> 'gpa';
+EXEC sp_executesql @sql;

From 1a659d3fab3f24d1f9a33564d4b7919ab2250784 Mon Sep 17 00:00:00 2001
From: Mateen0007 <mateenwriter772@gmail.com>
Date: Sun, 31 Aug 2025 16:07:06 +0500
Subject: [PATCH 2/3] Create PostgreSQL.sql

---
 .../Exclude_a_Column_in_SQL/PostgreSQL.sql      | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 sql-queries-12/Exclude_a_Column_in_SQL/PostgreSQL.sql

diff --git a/sql-queries-12/Exclude_a_Column_in_SQL/PostgreSQL.sql b/sql-queries-12/Exclude_a_Column_in_SQL/PostgreSQL.sql
new file mode 100644
index 00000000..581c7a3e
--- /dev/null
+++ b/sql-queries-12/Exclude_a_Column_in_SQL/PostgreSQL.sql
@@ -0,0 +1,17 @@
+-- Excludes code column from department table
+DO $$
+ DECLARE
+     sql_query text;
+ BEGIN
+     SELECT 'SELECT ' ||
+            string_agg(quote_ident(column_name), ', ' ORDER BY ordinal_position) ||
+            ' FROM Department'
+     INTO sql_query
+     FROM information_schema.columns
+     WHERE table_schema = 'public'
+       AND table_name   = 'department'
+       AND column_name <> 'code';
+
+     RAISE NOTICE 'Generated SQL: %', sql_query;
+     EXECUTE sql_query;
+ END $$;

From b18824e18aeb9738f2bfabfd8693190be7fad341 Mon Sep 17 00:00:00 2001
From: Mateen0007 <mateenwriter772@gmail.com>
Date: Sun, 31 Aug 2025 16:09:13 +0500
Subject: [PATCH 3/3] Create MySQL.sql

---
 sql-queries-12/Exclude_a_Column_in_SQL/MySQL.sql | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 sql-queries-12/Exclude_a_Column_in_SQL/MySQL.sql

diff --git a/sql-queries-12/Exclude_a_Column_in_SQL/MySQL.sql b/sql-queries-12/Exclude_a_Column_in_SQL/MySQL.sql
new file mode 100644
index 00000000..2bd2cf86
--- /dev/null
+++ b/sql-queries-12/Exclude_a_Column_in_SQL/MySQL.sql
@@ -0,0 +1,12 @@
+-- Exclude textbook column from course table
+SET @sql = NULL;
+SELECT GROUP_CONCAT(CONCAT('`', COLUMN_NAME, '`') ORDER BY ORDINAL_POSITION SEPARATOR ', ')
+INTO @sql
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = 'university'
+  AND TABLE_NAME = 'course'
+  AND COLUMN_NAME <> 'textbook';
+SET @sql = CONCAT('SELECT ', @sql, ' FROM course');
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;