本文整理汇总了Python中sqlalchemy.sql.expression._truncated_label方法的典型用法代码示例。如果您正苦于以下问题：Python expression._truncated_label方法的具体用法？Python expression._truncated_label怎么用？Python expression._truncated_label使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sqlalchemy.sql.expression的用法示例。
在下文中一共展示了expression._truncated_label方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: visit_alias
# 需要导入模块: from sqlalchemy.sql import expression [as 别名]
# 或者: from sqlalchemy.sql.expression import _truncated_label [as 别名]
def visit_alias(self, alias, asfrom=False, **kwargs):
if self.dialect._version_two:
return super(FBCompiler, self).\
visit_alias(alias, asfrom=asfrom, **kwargs)
else:
# Override to not use the AS keyword which FB 1.5 does not like
if asfrom:
alias_name = isinstance(alias.name,
expression._truncated_label) and \
self._truncated_identifier("alias",
alias.name) or alias.name
return self.process(
alias.original, asfrom=asfrom, **kwargs) + \
" " + \
self.preparer.format_alias(alias, alias_name)
else:
return self.process(alias.original, **kwargs) 示例2: visit_alias
# 需要导入模块: from sqlalchemy.sql import expression [as 别名]
# 或者: from sqlalchemy.sql.expression import _truncated_label [as 别名]
def visit_alias(self, alias, asfrom=False, ashint=False, **kwargs):
"""Oracle doesn't like ``FROM table AS alias``. Is the AS standard
SQL??
"""
if asfrom or ashint:
alias_name = isinstance(alias.name, expression._truncated_label) and \
self._truncated_identifier("alias", alias.name) or alias.name
if ashint:
return alias_name
elif asfrom:
return self.process(alias.original, asfrom=asfrom, **kwargs) + \
" " + self.preparer.format_alias(alias, alias_name)
else:
return self.process(alias.original, **kwargs) 示例3: visit_alias
# 需要导入模块: from sqlalchemy.sql import expression [as 别名]
# 或者: from sqlalchemy.sql.expression import _truncated_label [as 别名]
def visit_alias(self, alias, asfrom=False, **kwargs):
if self.dialect._version_two:
return super(FBCompiler, self).visit_alias(
alias, asfrom=asfrom, **kwargs
)
else:
# Override to not use the AS keyword which FB 1.5 does not like
if asfrom:
alias_name = (
isinstance(alias.name, expression._truncated_label)
and self._truncated_identifier("alias", alias.name)
or alias.name
)
return (
self.process(alias.element, asfrom=asfrom, **kwargs)
+ " "
+ self.preparer.format_alias(alias, alias_name)
)
else:
return self.process(alias.element, **kwargs) 示例4: visit_alias
# 需要导入模块: from sqlalchemy.sql import expression [as 别名]
# 或者: from sqlalchemy.sql.expression import _truncated_label [as 别名]
def visit_alias(self, alias, asfrom=False, **kwargs):
if self.dialect._version_two:
return super(FBCompiler, self).\
visit_alias(alias, asfrom=asfrom, **kwargs)
else:
# Override to not use the AS keyword which FB 1.5 does not like
if asfrom:
alias_name = isinstance(alias.name,
expression._truncated_label) and \
self._truncated_identifier("alias",
alias.name) or alias.name
return self.process(
alias.original, asfrom=asfrom, **kwargs) + \
" " + \
self.preparer.format_alias(alias, alias_name)
else:
return self.process(alias.original, **kwargs) 示例5: visit_alias
# 需要导入模块: from sqlalchemy.sql import expression [as 别名]
# 或者: from sqlalchemy.sql.expression import _truncated_label [as 别名]
def visit_alias(self, alias, asfrom=False, ashint=False, **kwargs):
"""Oracle doesn't like ``FROM table AS alias``. Is the AS standard SQL??"""
if asfrom or ashint:
alias_name = isinstance(alias.name, expression._truncated_label) and \
self._truncated_identifier("alias", alias.name) or alias.name
if ashint:
return alias_name
elif asfrom:
return self.process(alias.original, asfrom=asfrom, **kwargs) + \
" " + self.preparer.format_alias(alias, alias_name)
else:
return self.process(alias.original, **kwargs)