EXECUTE IMMEDIATE dynamic_string [INTO bind_variables] USING bind_arguments; dynamic_string是一个包含将被执行的SQL语句或PL/SQL代码块的字符串。 INTO子句是可选的,用于将查询结果绑定到变量中。 bind_variables是一个或多个变量,用于存储查询的结果。 USING子句是可选的,用于传递参数到动态SQL语句中。 bind_...
可以通过使用BINDVARIABLES和参数化查询来减少SQL注入等安全问题的风险。使用BINDVARIABLES可以避免将用户输入直接拼接到SQL语句中,从而减少潜在的安全风险。 此外,EXECUTEIMMEDIATE用于动态执行SQL语句的过程是比较耗时的,并且可能导致性能问题。因此,在使用EXECUTEIMMEDIATE时需要谨慎考虑其对性能的影响,并确保正确处理异常和...
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EXECUTE IMMEDIATE 'CREATE TABLE link_emp (idemp1 NUMBER, idemp2 NUMBER)'; EXECUTE IMMEDIATE 'ALTER SESSION SET SQL_TRACE TRUE'; Run an anonymous block with bind variables usingEXECUTE IMMEDIATE. EXECUTE IMMEDIATE 'BEGIN raise_sal (:col_val, :col_name, :amount); END;' US...
EXECUTE IMMEDIATE supports user variables and SP variables as OUT parameters DELIMITER $$ CREATE OR REPLACE PROCEDURE p1(OUT a INT) BEGIN SET a:= 10; END; $$ DELIMITER ; SET @a=2; EXECUTE IMMEDIATE 'CALL p1(?)' USING @a; SELECT @a; ...
You can rundynamic_sql_stmtrepeatedly using different values for the bind variables. You incur some overhead, becauseEXECUTEIMMEDIATEprepares the dynamic string before every execution. Note: Bind variables can be evaluated in any order. If a program determines order of evaluation, then at the point...
Learn how to use the EXECUTE IMMEDIATE syntax of the SQL language in Databricks SQL and Databricks Runtime.
You can execute a dynamic SQL statement repeatedly using new values for the bind arguments. You still incur some overhead, becauseEXECUTEIMMEDIATEre-prepares the dynamic string before every execution. The string argument to theEXECUTE IMMEDIATEcommand cannot be one of the national character types, su...
Execute Immediate代替了以前Oracle8i中DBMS_SQL package包。它解析并马上执行动态的SQL语句或非运行时创建...
The authorization ID of the statement might be affected by the DYNAMICRULES bind option. Syntax EXECUTE IMMEDIATEsql-expressionINTO,variableBULK COLLECT INTO,array-variableUSING,INexpressionIN OUTvariableOUTvariable Description sql-expression An expression returning the statement string to be executed. The...