如果表达式包含一个子查询,Azure Databricks 将引发INVALID_DEFAULT_VALUE.SUBQUERY_EXPRESSION错误。 示例 SQL复制 -- Create a variable with a default>DECLAREVARIABLEmyvarINTDEFAULT5; >VALUES(myvar); 5-- Setting a variable>SETVARmyvar = (SELECTsum(c1)FROMVALUES(1), (2)AST(c1); >VALUES(myvar); 3...
Defines the initial value of the variable after creation.default_expression must be castable todata_type. If no default is specified, the variable is initialized withNULL. If expression includes a subqueryDatabricksraises aINVALID_DEFAULT_VALUE.SUBQUERY_EXPRESSIONerror. Examples SQL -- Create a v...
If expression includes a subquery Azure Databricks raises a INVALID_DEFAULT_VALUE.SUBQUERY_EXPRESSION error. Examples SQL Kopiraj -- Create a variable with a default > DECLARE VARIABLE myvar INT DEFAULT 5; > VALUES (myvar); 5 -- Setting a variable > SET VAR myvar = (SELECT sum(c1) FROM...
If expression includes a subquery Azure Databricks raises a INVALID_DEFAULT_VALUE.SUBQUERY_EXPRESSION error. Examples SQL Copy -- Create a variable with a default > DECLARE VARIABLE myvar INT DEFAULT 5; > VALUES (myvar); 5 -- Setting a variable > SET VAR myvar = (SELECT sum(c1) FROM VA...
If expression includes a subquery Azure Databricks raises a INVALID_DEFAULT_VALUE.SUBQUERY_EXPRESSION error. Examples SQL Copy -- Create a variable with a default > DECLARE VARIABLE myvar INT DEFAULT 5; > VALUES (myvar); 5 -- Setting a variable > SET VAR myvar = (SELECT sum(c1) FROM VA...
Databricks SQL と Databricks Runtime で SQL 言語の DECLARE VARIABLE 構文を使う方法について説明します。
如果表達式包含子查詢 Azure Databricks,就會引發INVALID_DEFAULT_VALUE。SUBQUERY_EXPRESSION錯誤。 範例 SQL複製 -- Create a variable with a default>DECLAREVARIABLEmyvarINTDEFAULT5; >VALUES(myvar); 5-- Setting a variable>SETVARmyvar = (SELECTsum(c1)FROMVALUES(1), (2)AST(c1); >VALUES(myvar); 3-...
Learn how to use the DECLARE VARIABLE syntax of the SQL language in Databricks SQL and Databricks Runtime.
Databricks SQL Databricks Runtime 14.1 and above Creates a session private, temporary variable you can reference wherever a constant expression can be used. You can also use variables in combination with theIDENTIFIER clauseto parameterize identifiers in SQL statements. ...
If expression includes a subquery Azure Databricks raises a INVALID_DEFAULT_VALUE.SUBQUERY_EXPRESSION error. Examples SQL Kopéieren -- Create a variable with a default > DECLARE VARIABLE myvar INT DEFAULT 5; > VALUES (myvar); 5 -- Setting a variable > SET VAR myvar = (SELECT sum(c1) FR...