Is distinct in SQL case sensitive?
Is distinct in SQL case sensitive?
because they actually are different values.
Are aliases in SQL case sensitive?
By default, table aliases are case sensitive. You can specify an alias in any lettercase (upper, lower, or mixed), but if you use it multiple times in a statement, you must use the same lettercase each time. If the lower_case_table_names system variable is nonzero, table aliases are not case sensitive.
How do you make a SQL query case sensitive?
SQL Server is, by default, case insensitive; however, it is possible to create a case-sensitive SQL Server database and even to make specific table columns case sensitive. The way to determine if a database or database object is to check its “COLLATION” property and look for “CI” or “CS” in the result.
How do I make columns case sensitive in SQL Server?
You can also make column case sensitive by changing column’s collation from case insensitive SQL_Latin1_General_CP1_CI_AI to case sensitive Latin1_General_CS_AS. Lets use Alter Command to change the column Name collation from case insensitive to case sensitive.
What is collate SQL query?
SQL Server collation refers to a set of character and character encoding rules, and influences how information is stored according to the order in the data page, how data is matched by comparing two columns, and how information is arranged in the T-SQL query statement.
How do I ignore a case in MySQL?
Another way for case-insensitive matching is to use a different “collation”. The default collations used by SQL Server and MySQL do not distinguish between upper and lower case letters—they are case-insensitive by default. The logic of this query is perfectly reasonable but the execution plan is not: DB2.
Is HTML case-sensitive?
Generally, HTML is case-insensitive, but there are a few exceptions. Entity names (the things that follow ampersands) are case-senstive, but many browsers will accept many of them entirely in uppercase or entirely in lowercase; a few must be cased in particular ways.
How do I make SQL not case sensitive?
Case insensitive SQL SELECT: Use upper or lower functions select * from users where lower(first_name) = ‘fred’; As you can see, the pattern is to make the field you’re searching into uppercase or lowercase, and then make your search string also be uppercase or lowercase to match the SQL function you’ve used.
What is Latin1_General_CI_AS?
The Latin1_General_CI_AS collation is a Windows collation and the rules around sorting unicode and non-unicode data are the same. A Windows collation as per this example can still use an index if comparing unicode and non-unicode data albeit with a slight performance hit.
What are different types of collation sensitivity?
Following are the different types of collation sensitivity:
- Case Sensitivity: A and a and B and b.
- Kana Sensitivity: Japanese Kana characters.
- Width Sensitivity: Single byte character and double-byte character.
- Accent Sensitivity.
Why do I have to do case sensitive search in SQL?
However, if you want to retrieve only the rows which match the case of the string jack, you will have to do the case-sensitive search. The reason the query return all the rows is because the database collation is case insensitive. Now let us run the following script where I have specified case-sensitive collation for the WHERE clause.
How to make unique constraint case sensitive in SQL Server 2008?
If a column has a case sensitive collation and a unique constraint, then it should allow both ABC and abc, etc. So somewhere, there is something else going on. Maybe a trigger, or the column isn’t really case insensitive, maybe a trigger that’s doing something to cause the error, possibly something else.
When to use distinct in case insensitive databases?
One of the problems you may be faced with is that you want to get a distinct list of values from a table to show the differences in your table, but if your database is setup as case insensitive the DISTINCT clause does not show the differences it all gets grouped together. So based on this what options are there?
How to enable or disable case insensitive in SQL?
The names of the tables and columns specification are set to case insensitive on the SQL database server, however, it can be enabled and disabled by configuring the settings in SQL. The COLLATION is the property that decides and helps us to specify whether the elements other than keywords in SQL are to be allowed for case insensitivity or not.