Question

我有以下代码。在这里我将丢弃并在同一会话中重新创建相同的临时表。但是第二次创建表时不会丢失表。它引发了一个错误。任何人都有理由帮助我吗？提前致谢。

IF OBJECT_ID('TEMPDB..#Table1','U') IS NOT NULL
BEGIN
DROP TABLE #Table1
END
CREATE TABLE #Table1
    ([seller_name] varchar(3), [id_seller] int, [id_buyer] int)


INSERT INTO #Table1
    ([seller_name], [id_seller], [id_buyer])
VALUES
    ('abc', 1005, 1006),
    ('ddd', 1009, 1186),
    ('ccc', 1006, 1001),
    ('ccc', 1006, 1002),
    ('ddd', 1009, 1006),
    ('tyu', 1001, 1186)



GO

IF OBJECT_ID('TEMPDB..#Table1','U') IS NOT NULL --Not entering into `IF` block
BEGIN
DROP TABLE #Table1
END
CREATE TABLE #Table1
    ([seller_name] varchar(3), [id_seller] int, [id_buyer] int, [id_buyr] int)


INSERT INTO #Table1
    ([seller_name], [id_seller], [id_buyer],[id_buyr])
VALUES
    ('abc', 1005,8,1006),
    ('ddd', 1009,8,1186),
    ('ccc', 1006,8,1001),
    ('ccc', 1006,8,1002),
    ('ddd', 1009,8,1006),
    ('tyu', 1001,8,1186)

去

Answer 1

在第二次创建表时添加GO语句。它的工作原理

IF OBJECT_ID('TEMPDB..#Table1','U') IS NOT NULL
BEGIN
DROP TABLE #Table1
END
GO
CREATE TABLE #Table1
    ([seller_name] varchar(3), [id_seller] int, [id_buyer] int, [id_buyr] int)


INSERT INTO #Table1
    ([seller_name], [id_seller], [id_buyer],[id_buyr])
VALUES
    ('abc', 1005,8,1006),
    ('ddd', 1009,8,1186),
    ('ccc', 1006,8,1001),
    ('ccc', 1006,8,1002),
    ('ddd', 1009,8,1006),
    ('tyu', 1001,8,1186)
;

Answer 2

试试这个

IF OBJECT_ID('TEMPDB..#Table1','U') IS NOT NULL
BEGIN
DROP TABLE #Table1
END
GO

CREATE TABLE #Table1
    ([seller_name] varchar(3), [id_seller] int, [id_buyer] int)


INSERT INTO #Table1
    ([seller_name], [id_seller], [id_buyer])
VALUES
    ('abc', 1005, 1006),
    ('ddd', 1009, 1186),
    ('ccc', 1006, 1001),
    ('ccc', 1006, 1002),
    ('ddd', 1009, 1006),
    ('tyu', 1001, 1186)
GO

IF OBJECT_ID('TEMPDB..#Table1','U') IS NOT NULL
BEGIN
DROP TABLE #Table1
END
GO

CREATE TABLE #Table1
    ([seller_name] varchar(3), [id_seller] int, [id_buyer] int, [id_buyr] int)


INSERT INTO #Table1
    ([seller_name], [id_seller], [id_buyer],[id_buyr])
VALUES
    ('abc', 1005,8,1006),
    ('ddd', 1009,8,1186),
    ('ccc', 1006,8,1001),
    ('ccc', 1006,8,1002),
    ('ddd', 1009,8,1006),
    ('tyu', 1001,8,1186)
GO

临时表创建在同一会话中抛出错误，甚至丢弃和重新创建

2 个答案: