There is a powerful technique in SQL that can enhance clarity in reading your SQL statements as well as help you with SQL performance; however, this technique appears sparsely documented and therefore, perhaps, little used. This article introduces you to the WITH clause that lets you have ...
Use recursion or hierarchical queries. The SQL WITH clause allows you to write recursive queries, or hierarchical queries, which are queries that refer to previous rows of the same query. We’ll look at this a little later in this article. Here’s my YouTube video on using Common Table Ex...
CASE statement in WHERE clause for IS NULL: I want to say IS or IS NOT Null for a column using CASE Case Statement in Where clause with parameters SQL Server CASE statement inclusion and exclusions case statement inside a where clause with 'IN' operator CASE Statement on multiple columns CAS...
SQL Wildcard & Special Operator: Exercise-8 with SolutionFrom the following table, write a SQL query to find the details of all salespeople except those whose names begin with any letter between 'A' and 'M' . Return salesman_id, name, city, commission....
The USING clause works for Oracle, PostgreSQL, MySQL, and MariaDB. SQL Server doesn’t support the USING clause, so you need to use the ON clause instead. The USING clause can be used with INNER, LEFT, RIGHT, and FULL JOIN statements. ...
For example, when you construct a query by using ORDER BY, the sort order of your result set might depend on the collation applied to the database, or dictated in a COLLATE clause at the expression level of the query.To best use collation support in SQL Server, you should ...
Azure Data Warehouse をチェックするための supportLikeEscapeClause() を更新 明示的にサポートされていないにもかかわらず、supportsLikeEscapeClause がAzureDW に対して true を返していた問題に対処しました。 最新の OSGi JDBC 仕様にアップグレードされました OSGi JDBC 仕様 8.1.0 への準拠...
You generally handle errors for SQL/JSON functions and conditions using an error clause (ON ERROR). However, there is a special case where you might want different handling from this general error handling: when querying to match given JSON fields that are missing from the data. Som...
If a parameter marker was specified as part of a FOR n ROWS clause in the INSERT statement, a value for the number of rows must be specified with the USING clause of the EXECUTE statement. In an OPEN statement, when a dynamic SELECT statement contains one or more INSERT statements that ...
To create new_table from a remote source table, specify the source table using a four-part name in the form linked_server.catalog.schema.object in the FROM clause of the SELECT statement. Alternatively, you can use the OPENQUERY function or the OPENDATASOURCE function in the FROM clause to ...