Let us insert the rows in the table sales. Sold_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP Product_id INT GENERATED BY DEFAULT AS IDENTITY NOT NULL, Let us consider the table named Sales is created by using the following query statement – The syntax of the INSERT statement as provided by the IBM for DB2 RDBMS is as shown in the below image – In case, if the column name list is not specified the default order is the order in which the columns are defined in the definition of the table and same order is referred while inserting the column values too. However, if mentioned then the order should match with the order in which we have specified the values to be inserted. It is optional to specify the list of the column names of the table. In the above syntax, the list of column names of the table is the comma-separated names of the columns of table which are enclosed in simple round parenthesis which can be specified in any order while list of column values are the values that are comma-separated and enclosed in parenthesis that are specified in the same order in which the column names are written and which are to be inserted in the database. VALUES (list of the column values of that table) The following is the syntax for using the INSERT statement in DB2 to insert the row values into a particular table – Also, note that it is necessary to specify all the columns of the table in the INSERT statement’s column list place or else it will throw an error. The order in which we specify the names of the columns in the insert statement should match and correspond to the list of the values that we are trying to insert in the table by using our INSERT statement. When the data is inserted in the view automatically the corresponding tables from which the view is created are also updated and rows are inserted there too. We can add NULL values, host variables, constants, or default values too into columns while inserting the data using INSERT statement. Using the INSERT FOR n (number of rows) ROWS statement can be done for mass insertion of records into the table which can be further accompanied by using host variable arrays. The bulk insertion of the data into the database can also be done by using the LOAD utility of DB2, creating an application program which can insert the values into DB2 database, copying the data of one table to another. We can insert the data for a single row value using a single INSERT statement and also multiple rows using a single query of INSERT statement accompanied with SELECT statement which gets the data of some other table and inserts in the current table. If it is a generated column, then the computed value is inserted if a value is not specified while inserting the row using INSERT statement.If the column has the NULLABLE attribute set to true then NULL value is inserted for unspecified value of that column.If default value is specified in the definition of that column of the table then the default value is inserted when not specified in INSERT statement.If the unspecified value column is an identity column then an auto-incremented value is stored in it.If none of the rule is applicable, then an error is thrown in the output – If we try to insert the row without specifying the value for a certain column, then DB2 will directly internally follow the following rules to give the value to the unspecified columns. In order to insert the values into a particular table, it is necessary that the user should have the insert privileges for that particular table. Hadoop, Data Science, Statistics & others Working
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