MySQL – UPDATE query based on SELECT Query
You can actually do this one of two ways: MySQL update join syntax: ANSI SQL syntax: Pick whichever one seems most natural to you.
select
MySQL “Or” Condition
Use brackets to group the OR statements. You can also use IN
ORA-01830: date format picture ends before converting entire input string / Select sum where date query
I think you should not rely on the implicit conversion. It is a bad practice. Instead you should try like this: or like
Best way to do nested case statement logic in SQL Server
You could try some sort of COALESCE trick, eg: SELECT COALESCE( CASE WHEN condition1 THEN calculation1 ELSE NULL END, CASE WHEN condition2 THEN calculation2 ELSE NULL END, etc… )
MySQL SELECT increment counter
This part: makes it possible to introduce a variable without the need of a seperate query. So the first query could also be broken down into two queries like this: for instance when used in a stored procedure.
SQL update from one Table to another based on a ID match
I have a database with account numbers and card numbers. I match these to a file to update any card numbers to the account number, so that I am only working with account numbers. I created a view linking the table to the account/card database to return the Table ID and the related account number, and now I need to update those … Read more
ORA-01843 not a valid month- Comparing Dates
I have a problem when try to select data from a table filtering by date. For example: The Oracle Error is: Probably the source data of table is corrupted, in this case: How can i solve this problem? Can I change this dates for null? The results of this select, select * from nls_session_parameters; , is:
SQL SELECT WHERE field contains words
Rather slow, but working method to include any of words: If you need all words to be present, use this: If you want something faster, you need to look into full text search, and this is very specific for each database type.
Select objects based on value of variable in object using jq
Adapted from this post on Processing JSON with jq, you can use the select(bool) like this:
SQL SELECT WHERE field contains words
Rather slow, but working method to include any of words: If you need all words to be present, use this: If you want something faster, you need to look into full text search, and this is very specific for each database type.