alter datatype in db2

DB2 Alter Table introduction and use of normal Table modification and creation, you need to consider the following two situations: 1. when data is stored in a table, you can only modify the Data Type of the column to a compatible data type, or keep the original data type unchanged, the length is reduced (cannot be smaller than the maximum length of the stored value), or the table length is increased. 2. mod

I am used to the alter statements of oracle and cannot use these statements in db2. Example Table: createtableemp (idint, namechar (20), salaryd I am used to the alter statements of oracle and cannot use these statements in db2. Example table: create table emp (id int, name char (20), salary d I am used to the

I am used to the alter statements of Oracle and cannot use these statements in db2. The example table is as follows: Create table emp (id int, name char (20), salary decimal (); -- create table emp The alter statement usage of db2 is as follows: (1) Add Columns Alter table e

Label:DB2-alter Append/delete/reset column operation 1. Add field ALTER TABLE name add field name type DEMO:1 ALTER TABLE table_name NBSP;ADD N Bsp;column_test VARCHAR (50); 2. Change the field type ALTER TABLE name ALTER COLUMN field name set data type type DEMO: 1

DB2 alter: Add/delete/Reset Column 1. Add Fields Alter table [table_name] add [column_name] [column_type] 2. Change the field type Alter table [table_name] alter column [column_name] Set Data Type [column_type] Note: There are restrictions on changing the field type. Fo

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