decode mysql

Turn from: http://blog.csdn.net/flyingtimeice/article/details/4283145 Beginners Python, encountered a lot of coding problems, write down to avoid the future and forget, a lot of things do not understand, are belong to superficial understanding,

Use the Instr () and decode () functions of Oracle for multi-condition combination of ORACLE functions The system encounters a situation where you want to process the multi-condition combination query, using the implementation methods of the instr

First, caseSimilar to If-else, the statement is as follows:Case expr when Expr1 then RETURN_EXPR1[When Expr2 then RETURN_EXPR2...When Exprn then RETURN_EXPRNELSE else_expr]ENDAnd there are two methods of judging, case field when value then return

During data capturing, You must select and judge the SQL statement. Refer to the original script to find one of them.Decode (value, if1, then1, if2, then2,If3, then3 ,... else) the function can meet this requirement. An error is reported after it is

When using the Python flask framework +mysql with the app server on Sina app Engine (SAE) , When select returns to Chinese, the Jsonify function reports the following error: (Traceback.format_exc () to return when I am abnormal for debugging)

When using the Python flask framework +mysql with the app server on the Sina app Engine (SAE), select returns Chinese when the Jsonify function reports the following error: (To debug the traceback.format_ of return when I am abnormal) EXC ())

/usr/local/mysql/bin/mysqlbinlog-vv/var/lib/bin/mysql-bin.000008 --base64-output=decode-rows - -start-pos=307Question: What exactly does this mean?[Email protected]

Oracle SQL statements do not support the boolean Type (decode & case) Version:SQL> select * from v $ version; BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.1.0.

Difference between decode and casewhen bitsCN.com Difference between decode and case when Sum: sum (decode (sign (xingji-6), '', h. real_count, 1, h. real_count, 0 )) Compared with case when, decode cannot use and to connect multiple

In a production environment, the security of data is critical, and any loss of data can have serious consequences. So the database needs to be backed up. Here is an example of a new mysql5.7.First, database backup classification: From a