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...
(:I,:i+1,:i*1,:i*2,:i-1);Execute,immediate,sqlstr,using,I,I,I,I,i;Theefficiencyoftheimplementationismuchhigher.Ihavetriedtousebindvariablestoreplacethetablename,procedurename,fieldnames,thestatementiswrong,theconclusionisnottousebindvariablesasembeddingstrings,canonlyberegardedasavariableina...
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...
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图1 EXECUTE IMMEDIATE dynamic_select_clause::= using_clause子句的语法图参见图2。 图2 using_clause::= 对以上语法格式的解释如下: define_variable:用于指定存放单行查询结果的变量。 USING IN bind_argument:用于指定存放传递给动态SQL值的变量,即在dynamic_select_string中存在占位符时使用。 USING OUT bin...
Incidentally, in comments it was mentioned that you could use bind variables via the using clause, and not convert sysdate to a string and back; it's nothing to do with the error you're getting, but that might look like: CREATE PROCEDURE AMEPSA.USP_ETL_BATCH_MASTER_...
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...
' USING @param; 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; +---+ | @a | +---+ |...
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...