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How to modify the synchronous login code of discuz without activation Log on to discuz directly without activation. Test version: discuz! X3, the theory also supports 2.5. Let's test it again. The Code is as follows: // Open discuz/api/uc. php //

No error code is returned when importing csv files from a local wamp: Repeated replace=tablenewcardcharactersetutf8fieldsterminatedbyenclosedbylinesterminatedbyrn ('code ') No error code is returned when importing csv files from the local wamp: load

Summary of saving or update statements in Mysql native statements, mysqlsave Background During normal development, Zookeeper often encounters this data update scenario: first, judge whether a data exists in the database table. If yes, update is

In SQL writing, such as updating a row of records, you must obtain the updated row. From the perspective of the program itself, there is no difficulty, it is a big deal to cache this line, and direct access is completed. But from the perspective of

Explanation of myslq_replace statement bitsCN.com REPLACE runs like INSERT. There is only one exception. assume that an old record in the table and a record used for PRIMARY If the new record of a KEY or UNIQUE index has the same value, the old

The method for influencing execution plans in db2 is the same as that in Oracle databases. in DB2 databases, you can use the optimizer to analyze your SQL statements and generate an Access Plan that is considered optimal ). The DB2 optimizer is

/** * Session MySQL Memory table @Usage: Use some other storage method (MySQL or memcache) instead of PHP Sessoin @author: Lein @Version: 1.2 */ Session_Start (); if (!isset ($_session[' test ')) { $_session['

  DB2 database 1. load data: Export to tempfile of del select * From tablename where not clearing condition; Load from tempfile of del modified by delprioritychar replace into tablename nonrecoverable; Note: When the export data of unrelated data

Discuz does not activate synchronous login code modification method (discuz synchronous login ). Copy the code as follows: open discuzapiuc. at the phpsynlogin method (row 180), find if ($ membergetuserbyuid ($ uid, 1) {dsetcookie (auth, authcode ($

I mean can be inserted to return true, can not return false, but can not be inserted when the direct display of this Negative on My Code: Reply content: I mean can be inserted to return true, can not return false, but can not be inserted when

I will share an article about how to update data when saving data in mysql. Otherwise, I will save the data. It is very practical. If you need it, please refer to it. // If no data exists, insert new data The Code is as follows: Copy

In the previous article "database sharding design in youpai network architecture,I have mentioned the primary key selection problem in the MySQL database sharding design. In this article, I want to discuss this issue,This serves as a supplement to

// If no data exists, insert new data$ SQL = "insert into {$ ECs-> table ('cat _ Lang ')} (cat_id, lang_id, cat_name, keywords, cat_desc)Values ({$ cat_id}, {$ k}, '{$ Val ['cat _ name']}', '{$ Val ['keyword']}', '{$ Val ['cat _ desc']}')On

Pt-Osc Test 1. The original table must have the primary key or unique key. The new table `darren`.`_t_user_new` does not have a PRIMARY KEY or a unique index which is required for the DELETE trigger.Please check you have at least one UNIQUE and NOT

Replace syntax The syntax format for replace is: 1. Replace into table_name (col_name, ...) VALUES (...) 2. Replace into table_name (col_name, ...) Select ... 3. Replace into table_name set Col_name=value, ... Algorithm Description: The run of

One, background Before using SQL Server for table partitioning, there were a lot of questions about unique indexes: Step8:sql Server When table partitions encounter a unique constraint, I did not think that in the MySQL partition will encounter the

Prior to the wormhole (we developed a large volume data transmission tool, similar to Apache Sqoop, Taobao datax) MySQL writer supports insert into and replace into two ways into the MySQL table. Now there is a need to support the update part of the

Prior to the wormhole (we developed a large volume data transmission tool, similar to Apache Sqoop, Taobao datax) MySQL writer supports insert into and replace into two ways into the MySQL table. Now there is a need to support the update part of

It was suggested that 4 sheets be merged into one. The data volume is large, there are 40 million data. There is a lot of duplication of data that requires a column to be de-weighed.Ideas:1, export data. SELECT INTO outfile.2. Transfer to the server

SQL * Loader is a tool used to import external data from Oracle databases. it is similar to the Load tool of DB2, but has more options. It supports variable loading modes, optional loading and multi-Table loading. How to use SQL * Loader We can use