榜单
服务器优惠
AI论文
-
Uninitialized variable declaration
Uninitialized variable declaration Uninitialized variable declaration Crystal allows declaring uninitialized variables: x = uninitialized Int32 x # => some random value, ... -
DROP FILE
DROP FILE Description example keyword DROP FILE Description This statement is used to delete an uploaded file. Grammar: DROP FILE “file_name” [FROM database] [properties... -
Variables
Variables Variables Variables exposed by a C library can be declared inside a lib declaration using a global-variable-like declaration: lib C $errno : Int32 end Th... -
SHOW-CONVERT-LIGHT-SCHEMA-CHANGE-PROCESS
SHOW-CONVERT-LIGHT-SCHEMA-CHANGE-PROCESS Name Description Example Keywords Best Practice SHOW-CONVERT-LIGHT-SCHEMA-CHANGE-PROCESS Name SHOW CONVERT LIGHT SCHEMA CHANGE PRO... -
SHOW-CREATE-TABLE
SHOW-CREATE-TABLE Name Description Example Keywords Best Practice SHOW-CREATE-TABLE Name SHOW CREATE TABLE Description This statement is used to display the creation sta... -
CREATE-INDEX
CREATE-INDEX Name Description Example Keywords Best Practice CREATE-INDEX Name CREATE INDEX Description This statement is used to create an index grammar: CREATE INDEX ... -
SHOW-CREATE-DATABASE
SHOW-CREATE-DATABASE Name Description Example Keywords Best Practice SHOW-CREATE-DATABASE Name SHOW CREATE DATABASE Description This statement checks the creation of the... -
ROLLBACK MIGRATION
ROLLBACK MIGRATION Description Syntax Supplement Example Reserved word Related links ROLLBACK MIGRATION Description The ROLLBACK MIGRATION syntax is used to rollback mig... -
DESCRIBE
DESCRIBE Name Description Example Keywords Best Practice DESCRIBE Name DESCRIBE Description This statement is used to display the schema information of the specified tab... -
SHOW-CREATE-DATABASE
SHOW-CREATE-DATABASE Name Description Example Keywords Best Practice SHOW-CREATE-DATABASE Name SHOW CREATE DATABASE Description This statement checks the creation of the...