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The USING clause specifies which columns to test for equality when two tables are joined. It can be used instead of an ON clause in the JOIN operations that have an explicit join clause.
- SQL Clauses
USING clause; WHERE clause; WHERE CURRENT OF clause; Parent...
- SQL Clauses
3 maj 2012 · The USING clause: This allows you to specify the join key by name. The ON clause: This syntax allows you to specify the column names for join keys in both tables. The USING clause is used if several columns share the same name but you don’t want to join using all of these common columns.
21 mar 2018 · USING Clause is used to match only one column when more than one column matches. NATURAL JOIN and USING Clause are mutually exclusive. It should not have a qualifier (table name or Alias) in the referenced columns. NATURAL JOIN uses all the columns with matching names and datatypes to join the tables.
Oracle LEFT JOIN with USING clause. The USING clause specifies which column to test for equality when you join tables. The following shows the syntax of the LEFT JOIN with the USING clause: SELECT column_list FROM T1 LEFT JOIN T2 USING (c1,c2,c3, ...); Code language: SQL (Structured Query Language) (sql)
19 sie 2022 · Use the USING clause to match only one column when more than one column matches. The NATURAL JOIN and USING clauses are mutually exclusive. Syntax: SELECT table1.column, table2.column FROM table1 JOIN table2 USING (join_column1, join_column2…); Explanation: table1, table2 are the name of the tables participating in joining.
This chapter shows how PL/SQL supports the SQL commands, functions, and operators that let you manipulate Oracle data. This chapter contains these topics: Overview of SQL Support in PL/SQL. Performing DML Operations from PL/SQL (INSERT, UPDATE, and DELETE) Issuing Queries from PL/SQL. Querying Data with PL/SQL.
Use the EXECUTE IMMEDIATE statement with the BULK COLLECT INTO clause. Use the OPEN FOR, FETCH, and CLOSE statements. The SQL cursor attributes work the same way after native dynamic SQL INSERT, UPDATE, DELETE, MERGE, and single-row SELECT statements as they do for their static SQL counterparts.
