我正在MYSQL Workbench中创建一个存储函数,该函数获取日期并返回该会计年度的季度。我想出了以下代码脚本。SQL编辑器检查了这些语句并接受了该函数没有语法错误。 CREATE FUNCTION `get_fiscal_quarter`(calendar_date DATE) RETURNS char(2) DETERMINISTIC BEGIN DECLARE quart CHAR(2); DECLARE quar CHAR(2); SELECT...
mysqlcase多个关键字使用and或者in 在MySQL中,可以使用AND关键字将多个关键字组合在一起并进行逻辑与运算。这意味着只有当所有关键字都满足条件时,才会返回结果。 示例使用AND关键字: ```sql SELECT * FROM table_name WHERE column1 = value1 AND column2 = value2 AND column3 = value3; ``` 此查询将...
atcom.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1046)~[mysql-connector-java-8.0.28.jar:8.0.28] atcom.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate(ClientPreparedStatement.java:1371)~[mysql-connector-java-8.0.28.jar:8.0.28] atcom.mysql.cj.jdbc.Cli...
Description:When using built-in functions (i.e. get_lock) the digest hashing depends on the case used in the function. This makes it much harder to use a query rewrite rule, since there needs to be one-rule per case.How to repeat:The last select returns 2 rows. Ideally it should ret...
2Table and database names are stored on disk using the lettercase specified in theCREATE TABLEorCREATE DATABASEstatement, but MySQL converts them to lowercase on lookup. Name comparisons are not case-sensitive. This worksonlyon file systems that are not case-sensitive!InnoDBtable names and view...
RTTS’ QuerySurge Automates Data Testing with MySQL Embedded as Powerful Backend GeoSpatial appleple uses geometry type of MySQL to create a website using location information YamaReco implemented a map search function for hiking records, using the GIS feature of MySQL ...
SELECTdate,SUM(caseresultwhen'win'then1else0end)ASwin,SUM(caseresultwhen'lose'then1else0end)ASloseFROMinfoGROUPBYdateORDERBYdate; 测试完了,删除测试表: DROPTABLEinfo; 参考资料: http://www.yiibai.com/mysql/case-function.html http://www.cnblogs.com/yazdao/archive/2009/12/09/1620482.html ...
Member Function Documentation◆ add_json_info()void Item_func_case::add_json_info ( Json_object * json_obj ) inlineoverrideprotectedvirtual Add all the node-specific json fields. Any class that needs to add such info should override this function rather than doing it in do_contextualize(...
MySQL 存储过程——流程控制 顺序结构:程序从上往下依次执行 分支结构:程序从两条或者多条路径中选择一条去执行 循环结构: 程序在满足一定条件的基础上,重复执行一段代码 一、分支结构 1.if函数 功能:实现简单的分支 语法: select iF(表达式1,表达式2,表达式3) ...
I vaguely remember using a case clause in a select statement in a former occupation, but now that I am using mysql (with php) I am encountering my first need for it and don't know if I can do what I want. I need to add a sequencing field to my query results based upon whether ...