Oracle case like

This question has been asked before and already has an answer. The case statement is a more flexible extension of the Decode statement. Sometimes, you want to query data based on a specified pattern. The expression is stated at the beginning, and the possible are checked in the condition parameters.

Any help would be great in knowing if this type of statement is possible.

Oracle Database uses short-circuit evaluation. LIKE provides a utility to conduct simple text pattern matching without the full power regular expressions, and hence, is simpler than using regular expressions. How to use case statement inside where clause ? Placing the conditions inside the case like this doesn. IS NULL や IN 、 LIKE など記述も可能.

Use case when statement with to_char() like. Once it finds a match, the associated value is returned. In this article, I will try to give the regular.

ALL, ANY and SOME Comparison Conditions in SQL. Case expression let you perform IF-THEN-ELSE in oracle database. There are two type of case in oracle simple case expression and searched case expression.

Note the use of the ‘ LIKE ’ statement in the first WHEN condition. DECODE function was there for providing IF-THEN-ELSE functionality and this can compare only discrete values (Not in range). So, which one should you use? Sign in to make your opinion count.

CASE , DECODE, or COALESCE. In diesem Tipp erfahren Sie, wie Sie performant mit SQL LIKE n können - auch wenn die Wildcard am Anfang steht. Ferner wird auf Case - und Umlaut-Insensitive eingegangen.

Case 2: Tuning the LIKE -clause by using reverse key indexes. An expression must be of type int, short, byte or char. A case value should be a constant literal value and cannot be duplicated.

Whereas LIKE only performs simple pattern matching using the wildcards and _, REGEXP_ LIKE performs complex regular expression pattern matching allowing it to match a much greater range of string patterns than LIKE. The following examples compare pattern matching with both LIKE and REGEXP_ LIKE. Expression value is compared with each case value.

A base letter and all of its accented versions constitute an equivalence class. Count function using Case statement in. Ask Question Asked years, months ago. It is common practice to make a column case insensitive to ensure that you return all of the desired rows. User can simply use different regular expressions for so many functionalities.

In my previous article, I have given idea about oracle 12c features like pivot in SQL. W powyższym przykładzie jeśli w kolumnie department_id pojawi się wartość 9 case zwróci nam ciąg tekstowy „Zarząd”, jeśli pojawi się wartość dostaniemy tekst „Geeki informatyczne”. W przypadku pojawienia się dowolnej innej wartości otrzymamy tekst „Inni”. Néanmoins vous avez fait une erreur, dans vos sous-requête exists vous avez remis la table T_CABLO_CUSTOMER_CONTRAT. We can ignore case and compare only content by altering user session by using NLS_COMP and NLS_SORT parameters.

Be aware that once you use a function to ignore case , it is my recollection that any index on that field can no longer be used for access. I just want to include all statuses that were performed by a person across the row, but it seems the query repeats for every row with each status. Any ideas other than making invisible copies of description fields that are lower. It was a SQL-only expression that provided much greater flexibility than the functionally-similar DECODE function.

Using the WITH clause to simplify complex SQL. Starting in Oracle9i release there was an incorporation of a subquery factoring utility implemented the SQL-WITH clause.