Αποτελέσματα Αναζήτησης
The SET command is used with UPDATE to specify which columns and values that should be updated in a table. The following SQL updates the first customer (CustomerID = 1) with a new ContactName and a new City: Example. UPDATE Customers. SET ContactName = 'Alfred Schmidt', City= 'Frankfurt' WHERE CustomerID = 1;
19 Ιουλ 2018 · SQL set operators include UNION, UNION ALL, INTERSECT, MINUS, and EXCEPT. Learn what they are and how to use them in this guide.
22 Ιουν 2011 · You can only have one SET statement, with multiple fields, however, one WHERE clause as well. update table1 set field1=value1, field2=value2, field3=value3 where filed4=value5. answered Jun 22, 2011 at 20:40. Ahmad.
25 Σεπ 2023 · In SQL, the 'SET' statement is a command used to modify the values of specified columns in a table. It's commonly used in conjunction with the UPDATE statement to update existing records within the table.
MySQL 9.1 Reference Manual / / Data Types / String Data Types / The SET Type. 13.3.7 The SET Type. A SET is a string object that can have zero or more values, each of which must be chosen from a list of permitted values specified when the table is created. SET column values that consist of multiple set members are specified with members ...
This tutorial shows you step by step how to use the SQL ALTER TABLE statement to add new columns, modify existing columns, and drop columns from a table.
19 Ιουλ 2023 · SQL: Set Operation with example. In SQL, there are several set operations that can be performed on tables or result sets. These set operations allow you to combine, compare, or exclude data from multiple tables or result sets. The common set operations in SQL are:
