This section describes the Spark SQL syntax list provided by DLI. For details about the parameters and examples, see the syntax description. Table 1 SQL syntax of batch jobs Classification Database-related Syntax Creating a Database Deleting a Database Checking a Specified Database Checking All ...
ALTER FOREIGN TABLE (SQL on other GaussDB(DWS)) Deleting a foreign table. DROP FOREIGN TABLE Defining a Role A role is used to manage rights. For database security, all management and operation rights can be assigned to different roles. The following table lists the related SQL statements. ...
Be careful, deleting a database would loss all the data stored in the database.Create TableThe CREATE TABLE statement is used for creating a new table. The syntax is −SQL> CREATE TABLE table_name ( column_name column_data_type, column_name column_data_type, column_name column_data_...
Section 1.7.1, “MySQL Extensions to Standard SQL” Section 6.6.9, “mysqlbinlog — Utility for Processing Binary Log Files” Section 6.5.4, “mysqldump — A Database Backup Program” Section 19.1.6.3, “Replica Server Options and Variables” Section 7.1.8, “Server System Variables”ALTER...
Section 6.6.9.2, “mysqlbinlog Row Event Display” Section 6.6.9, “mysqlbinlog — Utility for Processing Binary Log Files” Section 19.3.3.1, “Privileges For The Replication PRIVILEGE_CHECKS_USER Account” Section 8.2.2, “Privileges Provided by MySQL” Section 19.3.3, “Replication Privilege...
Oracle attempts to add the row of data todepartments. If the object is not of the correct type for the statement, then Oracle returns an error. In this example,departmentsmust be a table, view, or a private synonym resolving to a table or view. Ifdepartmentsis a sequence, ...
To check if a correlated subquery yields any results, use the SQL EXISTS condition. The EXISTS condition evaluates to TRUE if the subquery returns at least one row, and to FALSE otherwise. To filter data according to whether specific conditions are met, the EXISTS operator can be used in a...
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After deleting a large part of aMyISAMorARCHIVEtable, or making many changes to aMyISAMorARCHIVEtable with variable-length rows (tables that haveVARCHAR,VARBINARY,BLOB, orTEXTcolumns). Deleted rows are maintained in a linked list and subsequentINSERToperations reuse old row positions. You can us...
In this tutorial, we will be using a test database and we will call it “MyTestDB”. The two simplest ways of creating a database is through the SSMS GUI or by a simple T-SQL script. Below, we will briefly walk through the steps for each option. ...