truncate table
TRUNCATE TABLE table;what is truncate in sql
DELETE -
-DML COMMAND
-Delete Rows from the table one by one
-We can use where clause with Delete to delete single row
-Delete is slower than truncate
-ROLLBACK is possible with DELETE
DROP-
-DDL COMMAND
-Delete the entire structure or schema
-We can't use where clause with drop
-Drop is slower than DELETE & TRUNCATE
-ROLLBACK IS NOT POSSIBLE WITH DROP
TRUNCATE-
-DDL COMMAND
-Truncate deletes rows at a one goal
-We can't use where clause with Truncate
-Truncate faster than both DELETE & DROP
-Rollback is not possible with Truncatetruncate sql server
-- Syntax for SQL Server and Azure SQL Database
TRUNCATE TABLE
{ database_name.schema_name.table_name | schema_name.table_name | table_name }
[ WITH ( PARTITIONS ( { <partition_number_expression> | <range> }
[ , ...n ] ) ) ]
[ ; ]
<range> ::=
<partition_number_expression> TO <partition_number_expression>sql truncate number
-- Truncate number with cast
UPDATE my_table
SET my_column = CAST(my_column AS INT)
WHERE ...;
-- or convert
UPDATE my_table
SET my_column = CONVERT(INT, my_column)
WHERE ...;Copyright © 2021 Codeinu
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