Updating multiple columns using forall
Type ----------------------------------------- -------- ---------------------------- CUST_ID NOT NULL NUMBER CUST_FIRST_NAME NOT NULL VARCHAR2(20) CUST_LAST_NAME NOT NULL VARCHAR2(40) CUST_GENDER NOT NULL CHAR(1) CUST_YEAR_OF_BIRTH NOT NULL NUMBER(4) CUST_MARITAL_STATUS VARCHAR2(20) CUST_STREET_ADDRESS NOT NULL VARCHAR2(40) CUST_POSTAL_CODE NOT NULL VARCHAR2(10) CUST_CITY NOT NULL VARCHAR2(30) CUST_CITY_ID NOT NULL NUMBER CUST_STATE_PROVINCE NOT NULL VARCHAR2(40) CUST_STATE_PROVINCE_ID NOT NULL NUMBER COUNTRY_ID NOT NULL NUMBER CUST_MAIN_PHONE_NUMBER NOT NULL VARCHAR2(25) CUST_INCOME_LEVEL VARCHAR2(30) CUST_CREDIT_LIMIT NUMBER CUST_EMAIL VARCHAR2(30) CUST_TOTAL NOT NULL VARCHAR2(14) CUST_TOTAL_ID NOT NULL NUMBER CUST_SRC_ID NUMBER CUST_EFF_FROM DATE CUST_EFF_TO DATE CUST_VALID VARCHAR2(1) SQL As you can see, the CUSTOMERS table is action packed with 55,500 scintillating (not really) rows of customer data while the CUSTOMERS2 table has nothing at this time.In order to remedy that problem we’re going to write an anonymous PL/SQL program to bulk collect data from CUSTOMERS into a PL/SQL collection then use FORALL to load the data into CUSTOMERS2. Content Header .feed_item_answer_user.js-wf-loaded . If you update values in multiple columns, you use a comma (,) to separate each pair of column and value.Requirement For any Salesforce Admin or developer, if there is a requirement to mass update multiple field attributes like length, label, Description or Help Text (or any other attribute) for all Custom Fields in a custom object, it would be tedious job to open and update each field one by one using Salesforce Standard process.These type of work requests would take much more effort and time.The old column values are used on the right side of the equal sign.
The column values returned by the subquery are assigned to the columns in the column list in order. WHERE search_condition Chooses which rows to update in the database table.
But like the rest of Oracle, the features have grown over the years and are a great way to pull data into memory via PL/SQL, manipulate it if desired, and perform DML in a single operation with the FORALL command. CUSTOMERS table to perform a FORALL insert and FORALL merge.
The environment for this test is an Oracle 11g R2 Enterprise Edition installation with the default schemas (HR, SH, OE, etc) loaded.
The first value is assigned to the first column in the list, the second value is assigned to the second column in the list, and so on. Only rows that meet the search condition are updated.
If you omit this clause, all rows in the table are updated.