Sample Files Chapter 2

TexanInParis · Jul 13, 2016 · bdf04df · bdf04df
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diff --git a/IBM DB2/Chapter 02/Listing 2.010.sql b/IBM DB2/Chapter 02/Listing 2.010.sql
@@ -2,4 +2,12 @@
 
 SET SCHEMA Item11Example;
 
-CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
+-- If you've run Listing 2.009.sql, you'll need to drop the index created
+-- in that listing, since we re-used the index name.
+-- If you have not run Listing 2.009.sql, comment out the DROP INDEX statement.
+DROP INDEX CustName ON Customers;
+
+CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
+
+-- Run the following if you do not want to keep the index.
+-- DROP INDEX CustName ON Customers;
diff --git a/Microsoft SQL Server/Chapter 02/Listing 2.010.sql b/Microsoft SQL Server/Chapter 02/Listing 2.010.sql
@@ -7,6 +7,9 @@ GO
 -- in that listing, since we re-used the index name.
 -- If you have not run Listing 2.009.sql, comment out the DROP INDEX statement.
 DROP INDEX CustName ON Customers;
-
+GO
 -- Less appropriate Index Creation SQL
 CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
+
+-- Run the following if you do not want to keep the index.
+-- DROP INDEX CustName ON Customers;
diff --git a/MySQL/Chapter 02/Listing 2.010.sql b/MySQL/Chapter 02/Listing 2.010.sql
@@ -9,3 +9,7 @@ DROP INDEX CustName ON Customers;
 
 -- Listing 2.10 Less appropriate Index Creation SQL
 CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
+
+-- Run the following if you do not want to keep the index.
+-- DROP INDEX CustName ON Customers;
+
diff --git a/Oracle/Chapter 02/Listing 2.010.sql b/Oracle/Chapter 02/Listing 2.010.sql
@@ -2,6 +2,13 @@
 
 ALTER SESSION SET CURRENT_SCHEMA = Item11Example;
 
+-- If you've run Listing 2.009.sql, you'll need to drop the index created
+-- in that listing, since we re-used the index name.
+-- If you have not run Listing 2.009.sql, comment out the DROP INDEX statement.
+DROP INDEX CustName ON Customers;
+
+-- Less appropriate Index Creation SQL
 CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
 
-DROP INDEX CustName;
+-- Run the following if you do not want to keep the index.
+-- DROP INDEX CustName ON Customers;
diff --git a/PostgreSQL/Chapter 02/Listing 2.010.sql b/PostgreSQL/Chapter 02/Listing 2.010.sql
@@ -2,4 +2,13 @@
 
 SET search_path = Item11Example;
 
-CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
+-- If you've run Listing 2.009.sql, you'll need to drop the index created
+-- in that listing, since we re-used the index name.
+-- If you have not run Listing 2.009.sql, comment out the DROP INDEX statement.
+DROP INDEX CustName ON Customers;
+
+-- Less appropriate Index Creation SQL
+CREATE INDEX CustName ON Customers(CustFirstName, CustLastName);
+
+-- Run the following if you do not want to keep the index.
+-- DROP INDEX CustName ON Customers;