INSERTINTOsequential_chain (id,data, next_id) VALUES(2,'Data 2',3); INSERTINTOsequential_chain (id,data, next_id) VALUES(3,'Data 3',NULL); 步骤3:访问数据项 可以使用SQL的SELECT语句来访问顺序链表中的数据项。通过指定条件和使用JOIN语句,可以在链表中定位和访问特定的数据项。 SELECT*FROMsequent...
2、SQLDatabaseSequentialChain SQLDatabaseChain会将数据库所有的表信息发送给大模型,如果数据库的表比较多且复杂,构造的prompt会很长,这样会超过一些大模型的token长度限制,而有些问题其实不需要把所有表发送给大模型,也会造成资源浪费。 SQLDatabaseSequentialChain会先进性一次判断,根据需求,结合表名,预测会用到哪些...
Issue with current documentation: when I write the following code from langchain_experimental.sql import SQLDatabaseSequentialChain I get the following error: Cannot find reference 'SQLDatabaseSequentialChain' in 'init.py' Idea or reques...
how can I use SQLDatabaseSequentialChain to reduce the number of tokens for llms,can you give me some example or demo,I dont find useful info from the docs
流程:[user] --查询--> [SQLDatabaseChain] --生成sql--> --执行SQL--> --结果-->[user] llm=ChatGLM(endpoint_url='http://127.0.0.1:8000',max_token=80000,top_p=0.9)db=SQLDatabase.from_uri("sqlite:///data/instance",include_tables=['instance'],sample_rows_in_table_info=2)db_cha...
For example, a product ID uniquely identifies products in the Production.Product table in the AdventureWorks2022 database. Queries in which a sequential search is specified, such as WHERE ProductID BETWEEN 980 and 999, would benefit from a clustered index on ProductID. This is because ...
With SQL Server Snapshot Backup, after the initial full backup that is required by SQL Server to establish the backup chain, only a single transaction log backup is required to restore a database to the point in time of the transaction log backup. Furthermore, only two transaction log ...
Scrollable cursors are cursors in which fetches and DML operations do not need to be forward sequential only. Interfaces exist to fetch previously fetched rows, to fetch the nth row in the result set, and to fetch the nth row from the current position in the result set.See Also: Oracle ...
the recovery mechanism can easily and quickly follow the chain of logged operations from the most recent operation back to the first operation and undo the effects of the operations in the opposite order from which they occurred. The database pages that were affected by the transaction are either...
sys.filegroups, sys.database_files是归属于特定数据库的,所以运行的时候需要切换到特定的数据库底下。不象有些DMV是全局性的,不需要指定数据库,在任何数据库根目录下,都能查到一致性的数据,比如 sys.dm_tran_locks. Is_default这里需要特别指出来 ,使因为如果在create table之后没有指定特别的file group,默认...