在使用componentWillReceiveProps时，发现React官网已经把componentWillReceiveProps重名为UNSAFE_componentWillReceiveProps，但是我发现了getDerivedStateFromProps可以替代，却又被一篇博客告知这个也尽量别使用。因为组件一旦使用派生状态，很有可能因为没有明确的数据来源导致出
If you want to have a different set of file permissions on files created by theUTL_FILEfunctions and procedures, set theutl_file.umaskconfiguration parameter. Theutl_file.umaskparameter sets thefile mode creation mask(or simply themask) in a manner similar to the L...
*.standby_file_management='AUTO' *.undo_tablespace='UNDOTBS1' *.utl_file_dir='*' 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. ...
UTL_FILEThe UTL_FILE package provides the capability to read from, and write to files on the operating system’s file system. UTL_HTTPThe UTL_HTTP package provides a way to use the HTTP or HTTPS protocol to retrieve information found at an URL. ...
--将Blob对象,写成磁盘文件 declare l_file utl_file.file_type; l_buffer raw(32767); l_amount binary_integer := 3276; l_pos int :=1; l_blob blob; l_blob_len int; begin select content into l_blob from test001; l_blob_len := dbms_lob.getlength(l_blob); l_file := utl_file....
Orafce:兼容Oracle的函数。比如date函数(next_day,last_day,trunc,round等)、字符串函数、一些包DBMS_ALERT, DBMS_OUTPUT, UTL_FILE, DBMS_PIPE等。 Ora2pg:Perl脚本,兼容schema。连接Oracle,提取结构,产生SQL语句然后加载到PG。 Oracle to postgres:不使用ODBC和其他中间件。转换表结构、数据、索引、主键和外键。
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cp etcdutl etcdctl etcd /usr/local/bin/ mkdir -p /etc/etcd mkdir -p /var/lib/etcd groupadd -f -g 1501 etcd useradd -c "etcd user" -d /var/lib/etcd -s /bin/false -g etcd -u 1501 etcd chown -R etcd:etcd /var/lib/etcd ...
Within our docker file, docker-compose.yml we need to add several key components: depends_on: - db db: image: postgres:13-alpine volumes: - postgres_data:/var/lib/postgresql/data/ environment: - POSTGRES_USER=hello_flask - POSTGRES_PASSWORD=hello_flask - POSTGRES_DB=hello_flask_dev volumes...
UTL_FILE.PUT_RAW(V_FILE_TYPE, V_BUFFER, TRUE); V_OFFSET := V_OFFSET + V_AMOUNT; DBMS_OUTPUT.PUT_LINE ('Offset : ' || V_OFFSET); END LOOP; UTL_FILE.FCLOSE(V_FILE_TYPE); ... I know PostgreSQL doesn't support procedure, so I want to porting it into a ...