You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
24 lines
814 B
24 lines
814 B
5 months ago
|
from py2neo import Graph, Node, Relationship, Subgraph
|
||
|
|
|
||
|
|
# 修正版本查询代码
|
||
|
|
#version = db.run("CALL dbms.components() YIELD versions UNWIND versions AS version RETURN version").evaluate()
|
||
|
|
#print(f"Neo4j 版本: {version}")
|
||
|
|
|
||
|
|
def clear(db):
|
||
|
|
# 清空数据
|
||
|
|
db.run("MATCH (n) DETACH DELETE n")
|
||
|
|
|
||
|
|
# 分步删除约束和索引
|
||
|
|
try:
|
||
|
|
# 删除约束
|
||
|
|
constraints = db.run("SHOW CONSTRAINTS YIELD name").data()
|
||
|
|
for constr in constraints:
|
||
|
|
db.run(f"DROP CONSTRAINT `{constr['name']}`")
|
||
|
|
|
||
|
|
# 删除索引
|
||
|
|
indexes = db.run("SHOW INDEXES YIELD name, type WHERE type <> 'LOOKUP'").data()
|
||
|
|
for idx in indexes:
|
||
|
|
db.run(f"DROP INDEX `{idx['name']}`")
|
||
|
|
except Exception as e:
|
||
|
|
print(f"删除操作失败: {e}")
|