Search results
11 lis 2015 · You could use the SQL%ROWCOUNT Oracle variable: UPDATE table1 SET field2 = value2, field3 = value3 WHERE field1 = value1; IF (SQL%ROWCOUNT = 0) THEN INSERT INTO table (field1, field2, field3) VALUES (value1, value2, value3); END IF;
19 lip 2022 · You can use MERGE with bind variables. To do this, use DUAL as the source table and join a primary or unique key on the target table to a variable. Supply the bind variables as the inputs for the INSERT & UPDATE sections. All the PL/SQL variables in this MERGE statement are bind variables.
29 kwi 2015 · IF EXISTS (select * from users where username = 'something') THEN. update users set id= 'some' where username = 'something'; ELSE. insert into users (username) values ('something'); END IF; end $$. delimiter ; and call it like this: call select_or_insert();
17 paź 2024 · MySQL provides two ways to insert a row into a table or update the row if it already exists. We can use the INSERT INTO … ON DUPLICATE KEY UPDATE syntax or the REPLACE statement.
5 gru 2019 · update table if ( sql%rowcount = 0 ) then insert end if; the exists just wastes time. the update will do the "read" and if it finds something -- the update, if not the insert will happen. this would be true in sqlserver as well!
An UPDATE statement can start with a WITH clause to define common table expressions accessible within the UPDATE. See Section 13.2.15, “WITH (Common Table Expressions)”. Single-table syntax: UPDATE [LOW_PRIORITY] [IGNORE] table_reference . SET assignment_list . [WHERE where_condition] [ORDER BY ...] [LIMIT row_count] value: {expr | DEFAULT}
11 cze 2020 · Update table Set column1 = :new_column1, column2 = :new_column2, .... Where primary_key = :primary_key And column1 = :old_column1 And column2 = :old_column2 and check sql%rowcount (in plsql - or use whatever your API provides to tell you how many rows were updated) to see if you actually succeeded. to read about this update in context:
