Dropping a table invalidates dependent objects and removes object privileges on the table. It says dropping a table invalidates dependent objects (lets say trigger ).
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Also asked, what happens to trigger when table is dropped?
That's if the table the trigger is against is dropped. Your trigger is weird, it's inserting into the same table. In that case, dropping the backup table would invalidate the trigger on the live table, but would not drop it. Only dropping the live table would drop the trigger on the live table.
does dropping a table drop the index SQL Server? By default, MS Sql Server also drops indexes when a table is dropped. (Observed in version 13.0. 4206.0.) DROP TABLE always removes - 1.
Considering this, is synonym dropped when table is dropped?
2 Answers. Dropping a table invalidates objects which have a dependency on the table: those views, synonyms and procedures are not dropped but cannot be used until we intervene to make them compile (e.g. by editing the source code).
When table is dropped what all is dropped?
Dropping a table removes the table definition from the data dictionary. All rows of the table are no longer accessible. All indexes and triggers associated with a table are dropped. All views and PL/SQL program units dependent on a dropped table remain, yet become invalid (not usable).
Related Question AnswersCan we drop a table which has primary key?
In SQL, you can drop a primary key using the ALTER TABLE statement.Does drop table free up space Oracle?
Unless you specify the PURGE clause, the DROP TABLE statement does not result in space being released back to the tablespace for use by other objects, and the space continues to count toward the user's space quota. For an external table, this statement removes only the table metadata in the database.Do we need to commit after drop table?
CREATE TABLE and DROP TABLE statements do not commit a transaction if the TEMPORARY keyword is used. (This does not apply to other operations on temporary tables such as ALTER TABLE and CREATE INDEX , which do cause a commit.)Can we drop a table with foreign key?
In SQL Server, you cannot drop a table if it is referenced by a FOREIGN KEY constraint. You have to either drop the child tables before removing the parent table, or remove foreign key constraints.Does the view exist if the table is dropped from the database?
Frequently Asked Questions. Question: Does the SQL View exist if the table is dropped from the database? Answer: Yes, in Oracle, the SQL VIEW continues to exist even after one of the tables (that the SQL VIEW is based on) is dropped from the database.What does drop table cascade constraints do?
To empty a table of rows, without destroying the table, use DELETE. DROP TABLE always removes any indexes, rules, triggers, and constraints that exist for the target table. However, to drop a table that is referenced by a view or a foreign-key constraint of another table, CASCADE must be specified.How do I force a table to drop in Oracle?
Oracle DROP TABLE- First, indicate the table and its schema that you want to drop after the DROP TABLE clause.
- Second, specify CASCADE CONSTRAINTS clause to remove all referential integrity constraints which refer to primary and unique keys in the table.
How do I drop a table with constraints?
The SQL syntax to remove a constraint from a table is,- ALTER TABLE "table_name" DROP [CONSTRAINT|INDEX] "CONSTRAINT_NAME";
- ALTER TABLE Customer DROP INDEX Con_First;
- ALTER TABLE Customer DROP CONSTRAINT Con_First;
- ALTER TABLE Customer DROP CONSTRAINT Con_First;
What is the synonym of Oracle?
prophet, prophetess, sibyl, seer, augur, prognosticator, diviner, soothsayer, wise man, wise woman, sage, fortune teller. rare oracler. 2'the Colonial Office's oracle on Africa' SYNONYMS. authority, expert, specialist, pundit, guru, mentor, adviser, mastermind, connoisseur.How do you drop a synonym in SQL?
To drop a private synonym, either the synonym must be in your own schema or you must have the DROP ANY SYNONYM system privilege. To drop a PUBLIC synonym, you must have the DROP PUBLIC SYNONYM system privilege. You must specify PUBLIC to drop a public synonym. You cannot specify schema if you have specified PUBLIC .What does it mean to dash someone?
dash someone's hopes. Destroy someone's plans, disappoint or disillusion. For example, That fall dashed her hopes of a gold medal. This term uses dash in the sense of “destroy,” a usage surviving only in this idiom. [How do you drop synonyms in Oracle?
Introduction to Oracle DROP SYNONYM statement- First, specify the name of the synonym that you want to remove after the DROP SYNONYM keyword. If the synonym belongs to a schema, you must specify its schema name.
- Second, use the FORCE keyword to delete the synonym even if it has dependent tables or user-defined types.
What is drop cascade?
The default drop option is CASCADE, which means any constraint that contains the column being dropped is also dropped. If a primary/unique key involving the column is referenced by other foreign key constraints, all referencing foreign keys are dropped.How do I create a synonym in Oracle?
Oracle CREATE SYNONYM- First, specify the name of the synonym and its schema.
- Second, specify the object for which you want to create the synonym after the FOR keyword.
- Third, use the OR REPLACE option if you want to re-create the synonym if it already exists.
How do I drop a sequence in Oracle?
The syntax to a drop a sequence in Oracle is: DROP SEQUENCE sequence_name; sequence_name. The name of the sequence that you wish to drop.How do I drop multiple tables in SQL Developer?
First Run this query with table names that you want to keep. SELECT CONCAT( 'DROP TABLE ', GROUP_CONCAT(table_name) , ';' ) AS statement FROM information_schema. tables WHERE table_schema = 'mydatabase' AND table_name not in ('table1', 'table2', 'table3'); This query will give you DROP table query.Which statement is true when a drop table command is executed on a table?
| Question ID 1481 | Which statement is true when a DROP TABLE command is executed on a table? |
|---|---|
| Option A | A. Any pending transactions on the table are rolled back. |
| Option B | B. The table structure and its deleted data cannot be rolled back and restored once the DROP TABLE command is executed. |
Why do chiropractors use drop table?
The chiropractor applies a quick thrust at the same time the section drops. The dropping of the table allows for a lighter adjustment without the twisting positions that can accompany other techniques. Instrument adjustments – often the gentlest methods of adjusting the spine.How do you drop a table in SQL if it exists?
SQL Server DROP TABLE- First, specify the name of the table to be removed.
- Second, specify the name of the database in which the table was created and the name of the schema to which the table belongs. The database name is optional.
- Third, use IF EXISTS clause to remove the table only if it exists.
