MySQL Calculate Percentage
try this DEMO HERE
Database
mysql count duplicates
If you want the count of everything, not just the tuples with duplicates, then eliminate the HAVING line, as that’ll filter out anything that doesn’t have duplicates.
Convert timestamp to date in Oracle SQL
For example, The query is : SELECT CAST(SYSTIMESTAMP AS DATE) FROM dual;
Comparing Dates in Oracle SQL
31-DEC-95 isn’t a string, nor is 20-JUN-94. They’re numbers with some extra stuff added on the end. This should be ’31-DEC-95′ or ’20-JUN-94′ – note the single quote, ‘. This will enable you to do a string comparison. However, you’re not doing a string comparison; you’re doing a date comparison. You should transform your string into a date. Either by using the built-in TO_DATE() function, … Read more
Insert into a MySQL table or update if exists
Use INSERT … ON DUPLICATE KEY UPDATE QUERY:
Convert partially non-numeric text into number in MySQL query
This should work:
Bulk load data conversion error (truncation)
It’s picking up the commas within the comments field as delimiters, because the delimiters are not consistent. The best solution is to insure that all fields are wrapped with double quotes and set FIELDTERMINATOR to ‘”,”‘. Alternately, replace the commas with something unlikely to be in the comments (like ~) and set FIELDTERMINATOR = ‘~’.
Microsoft OLE DB Provider for SQL Server error ‘80004005’
If it is an Express instance, it is most likely not a default instance, but rather a named instance. So you probably meant: Otherwise you’ll need to show us the server properties in SQL Server Configuration Manager on that machine in order for us to be able to tell you how to correct your connection … Read more
ERROR 1148: The used command is not allowed with this MySQL version
You can specify that as an additional option when setting up your client connection: This is because that feature opens a security hole. So you have to enable it in an explicit manner in case you really want to use it. Both client and server should enable the local-file option. Otherwise it doesn’t work.To enable … Read more