diff --git "a/14\351\203\221\345\256\227\345\270\205/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232.sql" "b/14\351\203\221\345\256\227\345\270\205/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..3a26457df7ff0f8277ae62e6f7e9e80eb82f80da
--- /dev/null
+++ "b/14\351\203\221\345\256\227\345\270\205/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232.sql"
@@ -0,0 +1,61 @@
+--编写视图实现查询出所有银行卡账户信息，显示卡号，身份证，姓名，余额。
+create view v_information
+as
+select AccountCode,CardNo,RealName,CardMoney from AccountInfo inner join BankCard on BankCard.AccountId=AccountInfo.AccountId
+go
+select * from v_information
+drop view v_information
+
+
+
+--行转列
+create table huatai(
+	year int,
+	month int,
+	amount float
+)
+
+insert into huatai(year,month,amount) values (1991,1,1.1)
+insert into huatai(year,month,amount) values (1991,2,1.2)
+insert into huatai(year,month,amount) values (1991,3,1.3)
+insert into huatai(year,month,amount) values (1991,4,1.4)
+
+insert into huatai(year,month,amount) values (1992,1,2.1)
+insert into huatai(year,month,amount) values (1992,2,2.2)
+insert into huatai(year,month,amount) values (1992,3,2.3)
+insert into huatai(year,month,amount) values (1992,4,2.4)
+
+select * from huatai
+
+
+create view m1
+as
+select year,amount m1 from huatai where month=1
+go
+create view m2
+as
+select year,amount m2 from huatai where month=2
+go
+create view m3
+as
+select year,amount m3 from huatai where month=3
+go
+create view m4
+as
+select year,amount m4 from huatai where month=4
+go
+
+select m1.year,m1,m2,m3,m4 from m1 
+join m2 on m2.year=m1.year
+join m3 on m3.year=m1.year
+join m4 on m4.year=m1.year
+
+drop view m1
+drop view m2
+drop view m3
+drop view m4
+
+
+select * from huatai pivot(max(amount) for month in ([1],[2],[3],[4])) a
+
+select * from huatai pivot(min(amount) for month in ([1],[2],[3],[4])) b
\ No newline at end of file
diff --git "a/14\351\203\221\345\256\227\345\270\205/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232/\347\254\254\344\270\203\346\254\241\347\254\224\350\256\260.md" "b/14\351\203\221\345\256\227\345\270\205/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232/\347\254\254\344\270\203\346\254\241\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..c110e45ca640ec0c24557087a0da6986de397897
--- /dev/null
+++ "b/14\351\203\221\345\256\227\345\270\205/\347\254\254\344\270\203\346\254\241\344\275\234\344\270\232/\347\254\254\344\270\203\346\254\241\347\254\224\350\256\260.md"
@@ -0,0 +1,22 @@
+view:
+create view ***
+as
+select * from **
+
+pivot:
+select * from [mod]  
+pivot
+(
+sum(amount)  
+for [month] in ([1],[2],[3],[4]) 
+) as amount
+
+union:
+select [Year],'A1' as peopel,A1 as Amonut from Sales union all
+select [Year],'A2' as peopel,A2 as Amonut from Sales union all
+select [Year],'A3' as peopel,A3 as Amonut from Sales union all
+select [Year],'A4' as peopel,A4 as Amonut from Sales
+
+unpivot:
+select * from Sales
+unpivot (Amount for people in (A1,A2,A3,A4)) as a
\ No newline at end of file