Postgres sql有一种方法

请参考: http://www.postgresonline.com/journal/archives/41-How-to-SELECT-ALL-EXCEPT-some-columns-in-a-table.html

信息Schema Hack方法

SELECT 'SELECT ' || array_to_string(ARRAY(SELECT 'o' || '.' || c.column_name
        FROM information_schema.columns As c
            WHERE table_name = 'officepark' 
            AND  c.column_name NOT IN('officeparkid', 'contractor')
    ), ',') || ' FROM officepark As o' As sqlstmt

对于我的特定示例表，上面的代码生成如下所示的sql语句

选择o.officepark、o.owner o.squarefootage 从办公室公园As o

是的，这是可能的(但不建议)。

CREATE TABLE contact (contactid int, name varchar(100), dob datetime)
INSERT INTO contact SELECT 1, 'Joe', '1974-01-01'

DECLARE @columns varchar(8000)

SELECT @columns = ISNULL(@columns + ', ','') + QUOTENAME(column_name)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'contact' AND COLUMN_NAME <> 'dob'
ORDER BY ORDINAL_POSITION

EXEC ('SELECT ' + @columns + ' FROM contact')

代码说明:

Declare a variable to store a comma separated list of column names. This defaults to NULL. Use a system view to determine the names of the columns in our table. Use SELECT @variable = @variable + ... FROM to concatenate the column names. This type of SELECT does not not return a result set. This is perhaps undocumented behaviour but works in every version of SQL Server. As an alternative you could use SET @variable = (SELECT ... FOR XML PATH('')) to concatenate strings. Use the ISNULL function to prepend a comma only if this is not the first column name. Use the QUOTENAME function to support spaces and punctuation in column names. Use the WHERE clause to hide columns we don't want to see. Use EXEC (@variable), also known as dynamic SQL, to resolve the column names at runtime. This is needed because we don't know the column names at compile time.

如果你正在使用mysql-workbench，你可以右键单击表资源管理器，然后单击“发送到SQL编辑器->选择所有语句”。

它会发送一条语句，比如“Select col1, col2，…”从表”。

然后删除那些你不需要的。

是否有一种方法可以在不指定的情况下从表中排除列 所有的列?

以通常的方式使用声明性SQL是不行的。

我认为你提出的语法是有价值的，是好的。事实上，关系数据库语言‘Tutorial D’有一个非常相似的语法，关键字ALL BUT后面跟着一组属性(列)。

然而，SQL的SELECT *已经受到了很多批评(@Guffa的回答是一个典型的反对)，所以我不认为SELECT ALL BUT会很快进入SQL标准。

我认为最好的“工作”是创建一个视图，只有你想要的列，然后选择*从那个视图。

右键单击对象资源管理器中的表，选择前1000行

它会列出所有列，而不是*。然后删除不需要的列。应该比你自己打快多了。

然后，当你觉得这有点太多的工作，获得Red Gate的SQL提示，并从tbl输入ssf，转到*并再次单击选项卡。

我这样做了，它工作得很好(版本5.5.41):

# prepare column list using info from a table of choice
SET @dyn_colums = (SELECT REPLACE(
GROUP_CONCAT(`COLUMN_NAME`), ',column_name_to_remove','') 
FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE 
`TABLE_SCHEMA`='database_name' AND `TABLE_NAME`='table_name');

# set sql command using prepared columns
SET @sql = CONCAT("SELECT ", @dyn_colums, " FROM table_name");

# prepare and execute
PREPARE statement FROM @sql;
EXECUTE statement;