A. sql如何將多個表合並成一個表
--復雜點的方法，
DECLARE @startTime DATETIME --開始的時間
DECLARE @endTime DATETIME --結束的時間
--比如我要得到1月到2月的數據
SET @startTime = '2014-01-01 00:00:00.000' --從新年第一天開始
SET @endTime = GETDATE() --一直到當前時間
--准備創建表
--根據月份創建
DECLARE @mi INT
--(這里必須要是開始時間和結束時間在一年之內的情況,如果不是在一年以內則要另外考慮,懶得寫)
SET @mi = MONTH(@endTime) - MONTH(@startTime) + 1 --用結束月份減去開始月份，得到總共要創建幾個月份表（加上當前月份）
--PRINT @mi
WHILE @mi >0
BEGIN
DECLARE @tableName VARCHAR(6) --月份表名
DECLARE @sql NVARCHAR(1000)
SET @tableName = '2014'
IF @mi<10
BEGIN
SET @tableName = @tableName + '0'
END
SET @tableName = @tableName + CAST(@mi AS VARCHAR)
IF NOT EXISTS (SELECT * FROM sysobjects WHERE [name] = @tableName AND [type] = 'U')
BEGIN
--如果當前月份表不存在,創建當前月份表
SET @sql = 'CREATE TABLE '+@tableName + ' (MId INT PRIMARY KEY IDENTITY(1,1))'
PRINT @sql
--執行
--EXECUTE sp_executesql N@sql
END
DECLARE @dayName VARCHAR(8) --天表名
WHILE CONVERT(VARCHAR(6),@endTime,112)=@tableName --確定當前時間是否是當前月的
BEGIN
SET @sql = ''
SET @dayName = CONVERT(VARCHAR(8),@endTime,112)
SET @sql = 'INSERT INTO '+@tableName +' VALUES SELECT * FROM ' + @dayName
PRINT @sql
--執行
--EXECUTE sp_executesql N@sql
SET @sql = ''
SET @endTime = DATEADD(DAY,-1,@endTime)
END
SET @mi = @mi - 1 --月份減一
/*
------------------------------------------------------------
CREATE TABLE 201402 (MId INT PRIMARY KEY IDENTITY(1,1))
INSERT INTO 201402 VALUES SELECT * FROM 20140219
INSERT INTO 201402 VALUES SELECT * FROM 20140218
INSERT INTO 201402 VALUES SELECT * FROM 20140217
INSERT INTO 201402 VALUES SELECT * FROM 20140216
INSERT INTO 201402 VALUES SELECT * FROM 20140215
INSERT INTO 201402 VALUES SELECT * FROM 20140214
INSERT INTO 201402 VALUES SELECT * FROM 20140213
INSERT INTO 201402 VALUES SELECT * FROM 20140212
INSERT INTO 201402 VALUES SELECT * FROM 20140211
INSERT INTO 201402 VALUES SELECT * FROM 20140210
INSERT INTO 201402 VALUES SELECT * FROM 20140209
INSERT INTO 201402 VALUES SELECT * FROM 20140208
INSERT INTO 201402 VALUES SELECT * FROM 20140207
INSERT INTO 201402 VALUES SELECT * FROM 20140206
INSERT INTO 201402 VALUES SELECT * FROM 20140205
INSERT INTO 201402 VALUES SELECT * FROM 20140204
INSERT INTO 201402 VALUES SELECT * FROM 20140203
INSERT INTO 201402 VALUES SELECT * FROM 20140202
INSERT INTO 201402 VALUES SELECT * FROM 20140201
CREATE TABLE 201401 (MId INT PRIMARY KEY IDENTITY(1,1))
INSERT INTO 201401 VALUES SELECT * FROM 20140131
INSERT INTO 201401 VALUES SELECT * FROM 20140130
INSERT INTO 201401 VALUES SELECT * FROM 20140129
INSERT INTO 201401 VALUES SELECT * FROM 20140128
INSERT INTO 201401 VALUES SELECT * FROM 20140127
INSERT INTO 201401 VALUES SELECT * FROM 20140126
INSERT INTO 201401 VALUES SELECT * FROM 20140125
INSERT INTO 201401 VALUES SELECT * FROM 20140124
INSERT INTO 201401 VALUES SELECT * FROM 20140123
INSERT INTO 201401 VALUES SELECT * FROM 20140122
INSERT INTO 201401 VALUES SELECT * FROM 20140121
INSERT INTO 201401 VALUES SELECT * FROM 20140120
INSERT INTO 201401 VALUES SELECT * FROM 20140119
INSERT INTO 201401 VALUES SELECT * FROM 20140118
INSERT INTO 201401 VALUES SELECT * FROM 20140117
INSERT INTO 201401 VALUES SELECT * FROM 20140116
INSERT INTO 201401 VALUES SELECT * FROM 20140115
INSERT INTO 201401 VALUES SELECT * FROM 20140114
INSERT INTO 201401 VALUES SELECT * FROM 20140113
INSERT INTO 201401 VALUES SELECT * FROM 20140112
INSERT INTO 201401 VALUES SELECT * FROM 20140111
INSERT INTO 201401 VALUES SELECT * FROM 20140110
INSERT INTO 201401 VALUES SELECT * FROM 20140109
INSERT INTO 201401 VALUES SELECT * FROM 20140108
INSERT INTO 201401 VALUES SELECT * FROM 20140107
INSERT INTO 201401 VALUES SELECT * FROM 20140106
INSERT INTO 201401 VALUES SELECT * FROM 20140105
INSERT INTO 201401 VALUES SELECT * FROM 20140104
INSERT INTO 201401 VALUES SELECT * FROM 20140103
INSERT INTO 201401 VALUES SELECT * FROM 20140102
INSERT INTO 201401 VALUES SELECT * FROM 20140101
*/
B. SQL語句兩個表合並合計
select名稱=a.名稱,A數量=a.數量,A金額=a.金額,B數量=b.數量,B金額=b.金額
from(select名稱,數量=sum(數量),金額=sum(金額)fromA表groupby名稱)a
fulljoin(select名稱,數量=sum(數量),金額=sum(金額)fromB表groupby名稱)b
ona.名稱=b.名稱
C. sql 合並三個表
那隻能將欄位功能一樣的合並哦！ 其它的放空，如下sql腳本
select[列1],[列2],[列3],[列4],[列5],[列6]from[表1]
unionall
select[列1],[列2],[列3],null,null,nullfrom[表2]
unionall
select[列1],[列2],null,null,null,[列6]from[表3]
請採納！
D. SQL怎麼合並表
select * into 新表名 from (select * from T1 union all select * from T2)
這個語句可以實現將合並的數據追加到一個新表中。
不合並重復數據 select * from T1 union all select * from T2
合並重復數據 select * from T1 union select * from T2
兩個表，表1 表2
如果要將 表1的數據並入表2用以下語句即可
insert into 表2(欄位1,欄位2) select 欄位1,欄位2 from b1
注意，必須把欄位名全部寫清楚，而且不允許把自動編號進去寫進去，要合並自動編號欄位必須重寫一個演算法一條一條記錄地加進去
1 insert into b1 select * from b2
2 select * into newtable from (select * from b1 union all select * from b2)
E. sql怎麼把兩張表合並成一張
sql把兩張表合並成一張步驟如下：
1、我們首先將以A為基準用leftjoin以B為基準用right，都要就用fulljoin 。
F. 用SQL語言將兩張表合並起來
用經銷商代碼做為key，連接兩張表格。
select * from 表1，表2 where 表1.經銷商代碼=表2.經銷商代碼
G. SQL求兩張表如何合並。
先用左連接將1表完全查出,再用右連接將2表完全查出,最後合並結果
SELECT t1.id AS `編號`,t1.`name` AS `名稱`,t1.score AS `科目一分數`,CASE WHEN t2.score IS NULL THEN 0 ELSE t2.score END AS `科目二分數`
FROM t1 LEFT JOIN t2 ON t1.id= t2.id
UNION
SELECT t2.id AS `編號`,t2.`name` AS `名稱`,CASE WHEN t1.score IS NULL THEN 0 ELSE t1.score END AS `科目一分數`,t2.score AS `科目二分數`
FROM t1 RIGHT JOIN t2 ON t1.id= t2.id;
H. SQL 表如何兩張表合並成一張 !!
UNION 操作符用於合並兩個或多個 SELECT 語句的結果集。
請注意，UNION 內部的 SELECT 語句必須擁有相同數量的列。列也必須擁有相似的數據類型。同時，每條 SELECT 語句中的列的順序必須相同。
SQL UNION 語法
SELECT column_name(s) FROM table_name1
UNION
SELECT column_name(s) FROM table_name2
注釋：默認地，UNION 操作符選取不同的值。如果允許重復的值，請使用 UNION ALL。
SQL UNION ALL 語法
SELECT column_name(s) FROM table_name1
UNION ALL
SELECT column_name(s) FROM table_name2
另外，UNION 結果集中的列名總是等於 UNION 中第一個 SELECT 語句中的列名。
I. SQL怎樣合並兩個表進行查詢
selecttop10*from
(select*from表1
unionall
select*from表2)asT
orderby某欄位
union all就是把倆表連接
然後把他倆連接的結果集起名叫T
然後你就可以用top了
你可以直接運行一下括弧里那句，如果表結構相同你兩個可以用*,如果部分欄位相同，你就要把在一起的欄位寫到一起了，比如
selectid,namefrom表1
unionall
selectid,namefrom表2
類似這樣
J. sql 兩表合並匯總
我想樓主說的應該是這個意思：
select
欄位1,欄位2,sum(起初數量),sum(發生數據)
from
(
select
欄位1,
欄位2,
sum(起初數量)
as
起初數量,
0
as
發生數據
from
table1
group
by
欄位1,欄位2
union
select
欄位1,
欄位2,
0
as
起初數量,
sum(發生數據)
as
發生數據
from
table2
group
by
欄位1,欄位2
)
a
group
by
欄位1,欄位2
因為表裡面不可能就一兩條數據-_-