The SQL SELECT statement returns a result set of rows, from one or more tables. A SELECT statement retrieves zero or more rows from one or more database... 33 KB (3,102 words) - 19:30, 20 March 2024 |
 | In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into... 40 KB (4,166 words) - 11:38, 29 April 2024 |
ON o1.id = o2.id WHERE o2.id IS NULL Union (set theory) Join (SQL) SQL:2003 Select (SQL) "The UNION [ALL], INTERSECT, MINUS Operators". Oracle. Retrieved... 8 KB (863 words) - 17:19, 20 July 2023 |
Data definition language (redirect from Drop (SQL)) manipulation language Data query language Select (SQL) Insert (SQL) Update (SQL) Delete (SQL) Truncate (SQL) Olle, T. William (1978). The Codasyl Approach... 9 KB (961 words) - 23:22, 26 January 2023 |
 | In SQL, null or NULL is a special marker used to indicate that a data value does not exist in the database. Introduced by the creator of the relational... 62 KB (7,601 words) - 13:07, 8 January 2024 |
reserved. SQL SQL syntax List of relational database management systems "Appendix C. SQL Key Words". PostgreSQL documentation. The PostgreSQL Global Development... 113 KB (159 words) - 11:04, 3 January 2024 |
Transact-SQL (T-SQL) is Microsoft's and Sybase's proprietary extension to the SQL (Structured Query Language) used to interact with relational databases... 6 KB (704 words) - 10:07, 8 June 2023 |
the average salary of their department (example from the PostgreSQL documentation): SELECT depname, empno, salary, avg(salary) OVER (PARTITION BY depname)... 9 KB (835 words) - 15:23, 10 March 2024 |
PL/SQL (Procedural Language for SQL) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle... 31 KB (3,910 words) - 06:32, 5 March 2024 |
A HAVING clause in SQL specifies that an SQL SELECT statement must only return rows where aggregate values meet the specified conditions.: 125–127 HAVING... 3 KB (312 words) - 04:57, 8 February 2024 |