What is Tbspaceid?

Qualified name of the table, view, or alias. Internal table identifier. TBSPACEID. SMALLINT. Internal identifier of primary table space for this table.

What is Syscat tables in DB2?

TABLES. Contains one row for each table, view, or alias that is created. All of the catalog tables and views have entries in the SYSCAT. TABLES catalog view.

What is Sysibm SYSDUMMY1?

As the name implies, SYSIBM.SYSDUMMY1 is a dummy table. It contains one row and one column, which is named IBMREQD and contains a value of ‘Y’. SYSIBM.SYSDUMMY1 is used extensively in SQL examples on the web and in the Knowledge Center.

How do I view tables in tablespace?

To get the tablespace for a particular Oracle table: SQL> select tablespace_name from all_tables where owner = ‘USR00’ and table_name = ‘Z303’; To get the tablespaces for all Oracle tables in a particular library: SQL> select table_name, tablespace_name from all_tables where owner = ‘USR00’;

What are catalog tables in DB2?

The catalog tables describe such things as table spaces, tables, columns, indexes, privileges, application plans, and packages. Authorized users can query the catalog; however, it is primarily intended for use by Db2 and is therefore subject to change. All catalog tables are qualified by SYSIBM.

What is Sysibm in DB2?

The SYSIBM. SYSCOLUMNS is a DB2 system table which contains one row for every column of each table. It also contains the data related to the views. Below SQL query can be fired in order to find the primary key of a particular table. SELECT NAME FROM SYSIBM.

How do I get the current date in DB2?

To get the current date, time, and timestamp using SQL, reference the appropriate DB2 registers:

1. SELECT current date FROM sysibm.sysdummy1 SELECT current time FROM sysibm.sysdummy1 SELECT current timestamp FROM sysibm.sysdummy1.
2. VALUES current date VALUES current time VALUES current timestamp.

How do you get DDL of a table in DB2?

Right-click the selected tables, and click Generate DDL in the pop-up menu. To open the Generate DDL notebook from a selected schema, from the Control Center, expand the object tree until you find the Schema folder of the database with which you are working.

How many identity columns can be in a table in DB2?

Notice that a table can have one and only one identity column in a table in Db2. Let’s take some examples of using identity columns to get a better understanding. First, create a new table named t1 with the id column as an identity column. The value of the id column will start with 10 and increment by 10.

When a row is inserted into the table DB2 generates a value?

When a row is inserted into the table, Db2 generates a value for the ROWID column unless one is supplied. If a value is supplied, it must be a valid row ID value that was previously generated by Db2 and the column must be defined as GENERATED BY DEFAULT.

What is the rowid column in DB2?

Each value in a ROWID column must be unique. Although the location of the row might change, for example across a table space reorganization, Db2 maintains the internal representation of the row ID value permanently. When a row is inserted into the table, Db2 generates a value for the ROWID column unless one is supplied.

What happens when you add a hidden row in DB2?

If you add a ROWID column to a table that already has an implicitly generated hidden ROWID column, Db2 ensures that the corresponding values in each column are identical. If the ROWID column that you add is defined as GENERATED BY DEFAULT, Db2 changes the attribute of the hidden ROWID column to GENERATED BY DEFAULT.