data connector for oracle and hadoop is disabled

Application: Refer to all the field name codes of the data table on the web, use cursors to generate all field names of the specified single table followed by commas for the list of field names separated by the select comma from the string and other occasions.The query result output is as follows:The field list string for the current data table Tb_ud_user isAh,bi

The multi-row data in the Oracle column is combined into one display character. oracle provides two functions: WMSYS. WM_CONCAT and listparts. Www.2cto.com: WMSYS. WM_CONCAT example: id name 1 aa 2 bb 3 cc results in "aa, bb, cc" select WMSYS. WM_CONCAT (. name) from user a, the query result

Oracle multi-database data is updated at the same time 1. Create dblink Create database link test connect to mall identified by test using'(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP) (HOST = 113.116.216.60) (PORT = 1521 )))(CONNECT_DATA =(SERVICE_NAME = orcl)))'; 2. Create a synonym Create or replace synonym store for sale_record @ mall; Run the foll

Operation Procedure: Open PLSQLDeveloper and execute the following statement to obtain the string declaremytablenameVARCHAR (255): STAFFDOC corresponding to all field names of the specified data table using a cursor in Oracle; -- defines the variable of the name of the data table to be queried. STAFFDOC is the name of

Label:Delete 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 occupied in Oracle. It only marks those chunks of data that have

';//action table name $f _name = ' content ';//clob field name to query while ($start $ret = '; $sql = "Begin Get_clob (?,?,?,?,?,?); end; "; $stmt = $oracle->prepare ($sql); $stmt->bindparam (1, $t _name, PDO::P aram_str, 100); $stmt->bindparam (2, $f _name, PDO::P aram_str, 100); $stmt->bindparam (3, $id, PDO::P aram_str, 100); $stmt->bindparam (4, $start, PDO::P aram_str, 100); $stmt->bindparam (5, $len, PDO::P aram_str, 100); $stmt->bindparam (6,

. Detail_id%type, Comment_body Bbscomment.comment_body%type); Bbscomment_record Bbscomment_type; --The variable v_comment_id bbscomment.comment_id%type to be compared; v_detail_id bbscomment. Detail_id%type; V_comment_body Bbscomment.comment_body%type; --Other variables v_batch_size integer: = 5000; V_counter integer: = 0; Cursor CUR_DUPL is--Take out all duplicate records select comment_id, detail_id, comment_body from Bbscomment where (detail_id

, ' yyyy-mm-dd ') = To_char (sysdate-1, ' yyyy-mm-dd ')), ' Egmas ', ' iphone order volume (Hong Kong, Macao and Taiwan) 'from dual;INSERT into Egmas_count_data (day, Count,system_name,operation_index)Select To_date (To_char (sysdate-1, ' yyyy-mm-dd '), ' Yyyy-mm-dd '), (select COUNT (1) from T_orders WHERETo_char (Created_tm, ' yyyy-mm-dd ') = To_char (sysdate-1, ' yyyy-mm-dd ')), ' Egmas ', ' Speed Express order Volume (Hong Kong, Macao and Taiwan) 'from dual;CommitEnd OrderCount;/Set Job exec

Just encountered a problem, the other side of the server environment for Linux, in accordance with the general Sqlldr import data, through the Plsql query found to be a question mark and garbled. Through the SELECT * from V$nls_parameters of the database, the character encoding Nls_characterset of the database is detected as American_america. ZHS16GBK, but Nls_nchar_characterset for AL16UTF16. Then, on th

Tags: search engine version How to do not table Sele problem form statementFirst, the questionToday there is a magical problem-there is data in the table, but the result of select COUNT (*) is 0. The initial manifestation of the problem is that the query report has no paging

Importing Oracle backup data to other tablespaces (only setting the default tablespace is invalid) When importing an Oracle backup data file (*. dmp) to another database user, you can use the following methods to replace the tablespace. Assume that the exported user name EXP

The data in the ORACLE Stored Procedure table is overwritten and restored. The old Stored Procedure overwrites the new stored procedure. As a result, all the previously used functions are 0. Therefore, the stored procedure is restored by performing the following steps: log on to PL/SQL with the SYSDBA permission of sys

Tags: alter SSI select EXE character shu ZHS16GBK media enableThe reason that Oracle data is imported into the new library is garbled in Chinese: the inconsistent character set of the old Library and the new library is caused.1, query the value of the character setSelect Par

- fromObj_code_file - WHEREId= 9667793; - + --size -V_chunksize:=Dbms_lob. Getchunksize (v_lob_loc); + IF(v_chunksize 32767) Then AV_buffer_size:=v_chunksize; at ELSE -V_buffer_size:= 32767; - END IF; -V_amount:=v_buffer_size; - - --Open inDbms_lob.OPEN(V_lob_loc, Dbms_lob. lob_readonly); - to --Write +V_out_file:=Utl_file. FOPEN ( -Location= 'Expdp_dir', theFileName=filename, *Open_mode= 'WB', $Max_linesize= 32767);Panax Notoginseng - whileV_amount>=v

; Imex=1 '";//This connection can manipulate the. xls and. xlsx files (connection strings that support Excel2003 and Excel2007)//remark: "Hdr=yes;" Is that the first line of the Excel file is the column name instead of the data, "HDR=NO;" It's just the opposite of the front. //"Imex=1" if the data type in the column

Oracle Performance Optimization Operation 7: Index improves query efficiency when data distribution is uneven Index selection is low, but the data value distribution is very different, you can still use the index to improve effic

Usage scenarios:For example, you need to query all student numbers with scores greater than 95, separated by commas into a string, from the Student score table.To prepare the test data:CREATE TABLE score (ID int,score int)INSERT into score values (1,90)INSERT into score values (2,96)INSERT into score values (3,99)It is now necessary to query the result string "2,,3" with a single statement.The SQL Server statements are as follows:Select substring ((SE

The error in the previous requirement document resulted in the fact that the originally three-digit number was not fixed, and later it was found that the requirement document had mistaken the requirement. The pure number in this field must be three digits.This field currently has thousands of rows of data, including a combination of letters, numbers, and numbers. The number of digits is not fixed. therefore

Tags: hbm view setup mic add str pos RAC Hbm.xmlReference content:Http://blog.sina.cn/dpool/blog/s/blog_90629d5301014a5w.htmlThe default value for a field in the database is 1, but after inserting the data, the field is empty and the value should be 1, but the actual value is empty.Looking at the output statements in t

Label:often need to be in the database to generate documents, due to the way you prefer the script, so you need to use spool time to format, the following simple collation of the Oracle in the format of some of the things, a total of 18, in fact, the commonly used is just a few, Later, we will attach the script of the simple shell operation that I wrote, hoping to be able to communicate with the same need,