Résultats de recherche
11 nov. 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;
18 mars 2011 · WHEN MATCHED THEN UPDATE SET {col1}='{val1}', {col2}={val2} WHEN NOT MATCHED THEN INSERT ({id}, {col1}, {col2}) VALUES ('{id}', '{val1}', {val2}) 2). Update different values with case: UPDATE SIGNALVALUE. SET. SIGNUMVALUE = CASE SIGID.
19 juil. 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.
8 déc. 2016 · by update/insert i mean we should either update the two columns where match is found and replace them with entries from table A(3rd and 4th column) or else Insert an additional row in table B with 3rd and 4th column from A without replacing the row. Example: Table A Currency_old Currency_indicator_old Currency_New Currency_indicator_new
This statement compares the contents of the people_target and people_source tables by using the person_id column and conditionally inserts and updates data in the people_target table. For each matching row in the people_source table, the values in the people_target table are set to those from the people_source table.
19 mars 2012 · If exists update else insert. A frequent occurrence when writing database procedures is to handle a scenario where given a set of fields, for example a new employee record, update the existing employee record if it exists otherwise create it.
13 févr. 2012 · I have stuck how to write down the update code for this column . The easy ones : ALTER TABLE class. ADD ( "FULL" VARCHAR (3) , CHECK ( "FULL"='YES' OR "FULL"='NO' ) ) SELECT class.id , COUNT (students.ID) , FROM class, students WHERE. class.id=students.class.id GROUP BY class.id. class.id COUNT (students.ID) P1 10.
