非SQL中可见3FUNCTIONalloc_to_dp(p_strINVARCHAR2,4p_display_period_idINNUMBER,5p_user_idINVARCHAR2)RETURNVARCHAR2;6FUNCTIONcreate_ppa_list_from_string(p_strINVARCHAR2)7RETURNppidtabletype;8ENDpanel_period_pkg;
Overview of bind variables With bind variables, you replace literals in SQL statements with placeholders. For example, the following SQL statement uses literals for the inserted values: INSERTINTOt(c1,c2)VALUES(1,'Test string'); The following SQL statement uses placeholders for the inserted values...
PLSQL_性能优化系列07_Oracle Parse Bind Variables解析绑定变量,使用绑定变量的重要性:如果不使用绑定变量而使用常量,会导致大量硬解析。由于硬解析的种种危害,不使用绑定变量往往是影响oracle性能和扩展性的最大问题
3. SESSION_CACHED_CURSORS参数 如果该参数非0,则在sqlplus中,当同一sql进行了三次soft parse,oracle会将cursor 移到cache中,第4次调用时则不需soft parse,但仍会注册为parse, parse count (total)仍会增加,同时session cursor cache hits也会增加。 该参数影响以下工具: 1)Sqlplus 2)Plsql中的native dynamic ...
Whena query uses literals, the optimizer can use theliteral values to find the best plan. However, when a query uses bindvariables, the optimizer must select the best plan without the presence ofliterals in the SQL text. This task can be extremely difficult. By peeking at bind values the ...
V$SQL_BIND_CAPTUREdisplays information on bind variables used by SQL cursors. Each row in the view contains information for one bind variable defined in a cursor. This includes: Reference to the cursor defining the bind variable (hash_value,address) for the parent cursor and (hash_value,child...
As we indicated in Section 9.1.1, creating a statement in DBI is a two-step process: first you create a query, then you create a statement handle from the query. One reason for this division is a complication in SQL called bind variables , which are a kind of placeholder. Instead of ...
Whena query uses literals, the optimizer can use theliteral values to find the best plan. However, when a query uses bindvariables, the optimizer must select the best plan without the presence ofliterals in the SQL text. This task can be extremely difficult. By peeking at bind values the ...
V$SQL_BIND_DATAdescribes information related to bind variables. V$SQL_BIND_DATAdescribes, for each distinct bind variable in each cursor owned by the session querying this view: Actual bind data, if the bind variable is user defined The underlying literal, if theCURSOR_SHARINGparameter is set to...
whenever you are reading variables in SQLScript, you have to use the colon prefix. Try :var_filter. Regards,Marc SAP Customer Solution Adoption (CSA) You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in. Comment Comment...