SQL SELECT statement The SELECT statement tells the query optimizer what data to return, what tables to look in, what relations to follow, and what order to impose on the returned data.

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Hi I need some help with a select statement in MS SQL. I have a table that need to check if there duplicate items there. The problem is that each items is based off of 4 fields in the table.

12347 998854 4 12347 998856 8</pre><BR><BR>I need a SQL statement that will use po_ln_no to get the PO number (matches up with po_no in po table) and give the ship_via_cod value from the po table.

The PROC SQL SELECT statement uses a CONNECTION TO component in the FROM clause to retrieve data from the ORACLE table. The Pass-Through query (in italics) is enclosed in parentheses and uses ORACLE ...

A new SQL Server 2025 feature lets organizations run vector-based semantic searches on their own data, connecting to local or ...

Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

The CONNECT statement establishes a connection with the DBMS. The EXECUTE statement sends dynamic, non-query DBMS-specific SQL statements to the DBMS. The CONNECTION TO component in the FROM clause of ...

You can use SQL to create, modify, search, and display database information. Dynamic SQL lets you create a query string based off of user input. SQL Server allows you to create dynamic SQL statements.

Spark SQL: Apache’s Spark project is for real-time, in-memory, parallelized processing of Hadoop data. Spark SQL builds on top of it to allow SQL queries to be written against data.