MySQL WHERE IN ()
Your query translates to It will only return the results that match it. One way of solving it avoiding the complexity would be, chaning the datatype to SET. Then you could use, FIND_IN_SET
Database
PLS-00103: Encountered the symbol when expecting one of the following:
The keyword for Oracle PL/SQL is “ELSIF” ( no extra “E”), not ELSEIF (yes, confusing and stupid)
Oracle Apex column link from LOV values
I’m mostly used to Apex 4.1, but this approach should work. You don’t need an LOV. Your report query should include both the MAST_ID and the TASK_NAME columns. Hide the TASK_NAME column and set MAST_ID as the linking column. If you set the Link Text (under Column Link) to #TASK_NAME#, you should get the desired result. Display As should be left at the default (Display as Text etc).
incorrect syntax error CREATE VIEW must be the only statement in the batch
Many useful statements in SQL Server have to be at the beginning of a batch. These include create trigger, create stored procedure, and many others. What is a batch? It is basically a unit of compilation. It also limits the scope of local variables. I advise you to read about batches in the documentation. The simplest way to … Read more
Selecting data from two different tables without using joins
You can do like this..
Database sharding vs partitioning
Partitioning is more a generic term for dividing data across tables or databases. Sharding is one specific type of partitioning, part of what is called horizontal partitioning. Here you replicate the schema across (typically) multiple instances or servers, using some kind of logic or identifier to know which instance or server to look for the … Read more
mysql Foreign key constraint is incorrectly formed error
I ran into this same problem with HeidiSQL. The error you receive is very cryptic. My problem ended up being that the foreign key column and the referencing column were not of the same type or length. The foreign key column was SMALLINT(5) UNSIGNED and the referenced column was INT(10) UNSIGNED. Once I made them both the same … Read more
Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’ (2)
I have installed MySQL server and trying to connect to it, but getting the error: I have checked my /tmp directory and there is no mysql.sock. I can’t find mysql.sock anywhere. I read that it might be in But I checked there as well and there is even no mysql directory, only some postfix thing … Read more
SQL – HAVING vs. WHERE
WHERE clause introduces a condition on individual rows; HAVING clause introduces a condition on aggregations, i.e. results of selection where a single result, such as count, average, min, max, or sum, has been produced from multiple rows. Your query calls for a second kind of condition (i.e. a condition on an aggregation) hence HAVING works correctly. As a rule of thumb, use WHERE before GROUP BY and HAVING after GROUP BY. … Read more
Each GROUP BY expression must contain at least one column that is not an outer reference
To start with you can’t do this: The HAVING clause can only contain things which are attributes of the aggregate groups. In addition, 1, 2, 3 is not valid in GROUP BY in SQL Server – I think that’s only valid in ORDER BY. Can you explain why this isn’t what you are looking for: