Teradata SQL statements define and manipulate the data stored in Teradata Database.
Teradata MultiLoad supports a subset of Teradata SQL statements. As a result, other utilities do not have to be invoked to perform routine database maintenance functions before executing Teradata MultiLoad utility tasks. For example, the supported Teradata SQL statements can be used to:
- Create the table to load
- Establish a database as an explicit table name qualifier
- Add checkpoint specifications to a journal table
The following table lists the Teradata SQL statements Teradata MultiLoad supports. To use any other Teradata SQL statements, exit Teradata MultiLoad and enter them from another application, such as Basic Teradata Query (BTEQ).
| Teradata SQL Statement | Function |
|---|---|
| ALTER TABLE | Changes the column configuration or options of an existing table |
| CHECKPOINT | Adds a checkpoint entry to a journal table |
| COLLECT STATISTICS | Collects statistical data for one or more columns of a table |
| COMMENT | Stores or retrieves a comment string associated with a database object |
| CREATE DATABASE | Creates a new database |
| CREATE MACRO | Creates a new macro |
| CREATE TABLE | Creates a new table |
| CREATE VIEW | Creates a new view |
| DATABASE | Specifies a new default database for the current session |
| DELETE | Removes rows from a table |
| DELETE DATABASE | Removes all tables, views, and macros from a database |
| DROP DATABASE | Drops the definition for an empty database from the Data Dictionary |
| DROP TABLE | Removes a table |
| GIVE | Transfers ownership of a database to another user |
| GRANT | Grants privileges to a database object |
| INSERT | Inserts new rows to a table |
| MODIFY DATABASE | Changes the options of an existing database |
| RELEASE MLOAD | Removes the access locks from the target tables in Teradata Database This inhibits any attempts to restart the Teradata MultiLoad job when a Teradata MultiLoad task has been suspended or aborted. A RELEASE MLOAD statement must be entered from another application (e.g., BTEQ). A RELEASE MLOAD statement cannot be entered from Teradata MultiLoad.
|
| RENAME | Changes the name of an existing table, view, or macro |
| REPLACE MACRO REPLACE VIEW | Redefines an existing macro or view |
| REVOKE | Rescinds privileges to a database object |
| SET QUERY_BAND | Identifies type and source of query to determine prioritization of queries Teradata MultiLoad parses and prevents the sending of the “SET QUERY_BAND ... FOR TRANSACTION;” statement to Teradata Database.
|
| SET SESSION COLLATION | Overrides the collation specification for the current session |
| SET SESSION OVERRIDE REPLICATION ON/OFF | Turns replication services on or off |
| UPDATE | Changes the column values of an existing row in a table |
For syntax and a complete description of each Teradata SQL statement, see SQL Data Definition Language (B035-1184) and SQL Data Manipulation Language (B035-1146).