.alter-merge table column-docstrings.alter-merge table column-docstrings
设置指定表的一个或多个列的 docstring
属性。Sets the docstring
property of one or more columns of the specified table. 未显式设置的列保留此属性的现有值(如果有)。Columns not explicitly set retain their existing value for this property, if they have one.
有关 alter table column-docstring 的信息,请参阅 下方内容。For alter table column-docstring, see below.
语法Syntax
.alter-merge
table
TableName column-docstring
(
Col1 :
Docstring1 [,
Col2 :
Docstring2]... )
.alter-merge
table
TableName column-docstring
(
Col1 :
Docstring1 [,
Col2 :
Docstring2]... )
示例Example
.alter-merge table Table1 column-docstrings (Column1:"DocString1", Column2:"DocString2")
alter table column-docstringsalter table column-docstrings
设置指定表的一个或多个列的 docstring
属性。Sets the docstring
property of one or more columns of the specified table. 未显式设置的列将删除此属性。Columns not explicitly set will have this property removed.
语法Syntax
.alter
table
TableName column-docstring
(
Col1 :
Docstring1 [,
Col2 :
Docstring2]... )
.alter
table
TableName column-docstring
(
Col1 :
Docstring1 [,
Col2 :
Docstring2]... )
示例Example
.alter table Table1 column-docstrings (Column1:"DocString1", Column2:"DocString2")