DECLARE GLOBAL TEMPORARY TABLE ステートメントは、現行アプリケーション・プロセス用の宣言済み一時表を定義します。 宣言済み一時表は作業ファイル・データベースにあり、その記述はシステム・カタログには存在しません。 この一時表は永続的でなく、他のアプリケ
DECLARE GLOBAL TEMPORARY TABLE ステートメントは、現行アプリケーション・プロセス用の宣言済み一時表を定義します。 宣言済み一時表は作業ファイル・データベースにあり、その記述はシステム・カタログには存在しません。 この一時表は永続的でなく、他のアプリケ
(myvar); 1 1 3 >DROPTEMPORARYVARIABLEmyvar;-- A minimalist variable declaration>DECLAREmyvar =5; >VALUES(myvar); 5-- Using a variable with an IDENTIFIER clause>DECLAREcolnameSTRING; >SETVARcolname ='c1'; >SELECTIDENTIFIER(colname)FROMVALUES(1,2)AST(c1, c2); 1 >SETVARcolname ='c2'; ...
The name of the Transact-SQL server cursor defined. cursor_name must conform to the rules for identifiers. INSENSITIVE Defines a cursor that makes a temporary copy of the data to be used by the cursor. All requests to the cursor are answered from this temporary table in tempdb....
mysql declare 运行sql 1 各种JOIN 2 临时表、文件 AI检测代码解析 CREATE TEMPORARY TABLE tmp_table ( name VARCHAR(10) NOT NULL, value INTEGER NOT NULL ) CREATE TEMPORARY TABLE a (select * FROM sys_user_role); Select * into outfile 'c://outfile.txt' from test;...
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Databricks SQL Databricks Runtime14.1 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. ...
Is the name of the Transact-SQL server cursor defined. cursor_name must conform to the rules for identifiers. For more information about rules for identifiers, seeUsing Identifiers As Object Names. INSENSITIVE Defines a cursor that makes a temporary copy of the data to be used by the cursor....
This page describes usage of cursors at the SQL command level. If you are trying to use cursors inside aPL/pgSQLfunction, the rules are different — seeSection 41.7. Parameters name The name of the cursor to be created. BINARY Causes the cursor to return data in binary rather than in tex...
In PostgreSQL, variables are often declared within functions or anonymous code blocks. They are used to store temporary data during the execution of a function or script. Variable declaration is primarily achieved through the PL/pgSQL procedural language. ...