data connector for oracle and hadoop is disabled

Label: #coding:gb18030 import cx_Oracle import xlsxwriter import time import sys reload(sys) sys.setdefaultencoding("gb18030") con = cx_Oracle.connect("user/[emailprotected]") cursor = con.cursor() query1 = cursor execute ( "" "Select Ol_nbr,ol_id,to_char (ol_so_date, ' yyyy-mm-dd hh24:mi:ss '), Co_nbr,min_co_id,max_co_id,prod_id,prod_spec_id,prod_name,order_type_name,owner_id,owner_name,area_id,area_ Name,staff_id,staff_number,staff_name,channe

Use INSERT INTO (field1,field2 ...) VALUES (' Val1 ', ' val2 ' ...) , an error occurs if there is a single quotation mark in the value.Processing method: Determine whether the Val1,val2 contains single quotation marks, if the single quotation marks, then the single quotation mark ' replaced with two single quotation marks '.Organize fields and field values into a hashtable, and then abstract a function getsqlbyhashtable () that organizes SQL statement

Label:SQL statement for querying and deleting duplicate records1, look for redundant records in the table, duplicate records are based on a single field (ID) to determineselect * FROM table where Id in (select ID from table group Byid have count (Id) > 1) 2, delete redundant records in the table, duplicate records are based on a single field (ID) to judge, leaving only the smallest rowID recordsDELETE from table WHERE (ID) in (the Select ID from table GROUP by ID has COUNT (ID) > 1) and ROWID n

SQL statement for querying and deleting duplicate records1, look for redundant records in the table, duplicate records are based on a single field (ID) to determineselect * FROM table where Id in (select ID from table group Byid have count (Id) > 1)2, delete redundant records in the table, duplicate records are based on a single field (ID) to judge, leaving only the smallest rowID recordsDELETE from table WHERE (ID) in (the Select ID from table GROUP by ID has COUNT (ID) > 1) and ROWID not in (s

Query and delete duplicate records of SQL statement 1, find redundant records in the table, duplicate records are based on a single field (ID) to determineSelect * from where inch (Selectfromgrouphavecount>1)2, delete redundant records in the table, duplicate records are based on a single field (ID) to judge, leaving only rowid the smallest record DELETE from table WHERE (ID) in (the SELECT ID from table GROUP by Id has COUNT (ID)> 1) and ROWID not in (SELECT MIN (ROWID) from table GROUP by ID

Label:Check a table today, the query table in a particular type of data is particularly slow, but query the whole table particularly fast, also did not find the reason, Baidu a bit, may feel (a small probability) is the followingSome people say:Note that this table is changed too frequently. Copy the

Tags: wayDelete the name of the table (record and structure) Delete ———— truncate ———— dropDelete (deletes the statement recorded in the data table)DELETE from table name WHERE condition;Note: Deleting a record does not release the block table space that is used in Oracle. It only marks the deleted chunks of data as un

For Oracle databases, when does the Ogg extraction process get data from the database?Reference text:When GoldenGate fetches Data from the Database on Extraction for Oracle (Doc ID 1059583.1)Suitable for:Oracle goldengate-version 4.0.0 and laterInformation in this document applies to any platform.Workaround:Problem:Wha

Tags: view technology. com COM Table name example statistics ROM nbsp Today in the work encountered a query in recent years, the problem of data, Oracle comparative slag slag, learning a bit. As an example: For example, I would like to see the employee entry status of the company, and then make a trend statistics. See trends for nearly 5 years, whichever is the

Table_name,partition_name,high_value,tablespace_name from user_tab_partitions where Table_name= ' P_ Range_test ' ORDER by partition_position;TABLE_NAME Partition_name High_value Tablespace_name-------------------- -------------------- ---------- ---------------P_range_test T_P1 TP1P_range_test T_P2 TP1P_range_test T_P3 TP1P_range_test sys_p41 TP1P_range_test T_pmax MAXVALUE TP1Get it done!!!Oracle range partition table already has maxvalue partition

Label:Operation of the database, often error operation, yesterday after the update operation found that the update is wrong, only to find ways to recover data, now tidy up First step: Query the time to perform the update operation Select from V$sqlarea R ORDER by r.first_load_time Desc; Execute the above SQL statement in the Sql_text field to find the UPDATE statement that you performed the update operatio

Oracle's minus returns data from the first table that is not in the second tableCREATE TABLEhovertree_union_1 (IDINT, ValVARCHAR(Ten) ); CREATE TABLEhovertree_union_2 (IDINT, ValVARCHAR(Ten) ); INSERT intoHovertree_union_1VALUES(1,'A'); INSERT intoHovertree_union_1VALUES(2,'B'); INSERT intoHovertree_union_1VALUES(3,'C'); INSERT intoHovertree_union_2VALUES(1,'A'); INSERT intoHovertree_union_2VALUES(1,

(Sele CT min (rowid) from table group by ID,SEQ have Count (*) >1)5. Find redundant duplicate records (multiple fields) in the table, not including the smallest ROWID recordsSELECT * FROM Table a WHERE (A.ID,A.SEQ) in (Select Id,seq from table group by ID,SEQ have count (*) > 1) and rowID not in (SE Lect min (rowid) from table group by ID,SEQ have Count (*) >1) For example:Service Relationship table, service_id relate_id Relate_type three together as a primary key, because there

SelectOper_time, Micropay, REFUND from ( Selecttrunc (oper_time) oper_time, class_name, sum (total_fee) Total_fee fromWx_pay_detail GROUP by Trunc (Oper_time), class_name) pivot (sum (total_fee) forClass_nameinch ('Micropay' as "Micropay",'Refund' as "REFUND") ) Order by Oper_time↑sql, post-conversion column names in for ... In as desired "name"Oracle according to the "date" group, other criteria according to pivot row to column. There