神马文学网INFORMIX IDS11.5 动态存储过程（DYNAMIC SPL） - INFORM...
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INFORMIX IDS11支持 动态存储过程。本文通过举例的方法演示如何在INFORMIX中创建动态存储过程。EXAMPLE 1 说明 EXECUTE IMMEDIATE 语句可以通过参数名来动态执行不同的表DATABASE stores_demo;
CREATE PROCEDURE create_tab (table_name CHAR(128), column_list CHAR(512)) DEFINE l_crtstmt CHAR(1024); LET l_crtstmt = "CREATE TABLE " || table_name ||"("|| column_list || " )"; --动态语句，存放到一个变量中 EXECUTE IMMEDIATE l_crtstmt; --动态执行SQLEND PROCEDURE;执行存储过程EXECUTE PROCEDURE create_tab ("tmp_cust","cust_num INTEGER,cust_fname CHAR(30)");
--------------------------------------------------------------------------------EXAMPLE 2说明在SPL中如何利用游标和动态语句DATABASE stores_demo;-- Procedure to dynamically constructs query `cust_qry' using supplied
-- table_name and returns all rows whose first name is the supplied
-- first_nameCREATE PROCEDURE customer_details(table_name CHAR(30),first_name CHAR(30))
RETURNING INTEGER, CHAR(30), CHAR(30), CHAR(30); DEFINE cust_qry VARCHAR(250);
DEFINE l_cust_num INTEGER; DEFINE l_fname CHAR(30);
DEFINE l_lname CHAR(30);
DEFINE l_state CHAR(30); -- Construct a Dynamic query using SPL argument table_name LET cust_qry = "select customer_num, fname, lname, state from "
||table_name || " where fname = ?"; -- Prepare the above constructed query
-- Get the statement handle "statement_id" PREPARE stmt_id FROM cust_qry;-- Declare the cursor for the prepared "statement_id"
-- get the cursor handle "cust_cur"DECLARE cust_cur cursor FOR stmt_id; -- Open the declared cursor using handle "cust_cur"
-- Supply the first_name as an input. This will be
-- substituted in the place of "?" in the query 本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/ibminformix/archive/2009/11/19/4833481.aspx
CREATE PROCEDURE create_tab (table_name CHAR(128), column_list CHAR(512)) DEFINE l_crtstmt CHAR(1024); LET l_crtstmt = "CREATE TABLE " || table_name ||"("|| column_list || " )"; --动态语句，存放到一个变量中 EXECUTE IMMEDIATE l_crtstmt; --动态执行SQLEND PROCEDURE;执行存储过程EXECUTE PROCEDURE create_tab ("tmp_cust","cust_num INTEGER,cust_fname CHAR(30)");
--------------------------------------------------------------------------------EXAMPLE 2说明在SPL中如何利用游标和动态语句DATABASE stores_demo;-- Procedure to dynamically constructs query `cust_qry' using supplied
-- table_name and returns all rows whose first name is the supplied
-- first_nameCREATE PROCEDURE customer_details(table_name CHAR(30),first_name CHAR(30))
RETURNING INTEGER, CHAR(30), CHAR(30), CHAR(30); DEFINE cust_qry VARCHAR(250);
DEFINE l_cust_num INTEGER; DEFINE l_fname CHAR(30);
DEFINE l_lname CHAR(30);
DEFINE l_state CHAR(30); -- Construct a Dynamic query using SPL argument table_name LET cust_qry = "select customer_num, fname, lname, state from "
||table_name || " where fname = ?"; -- Prepare the above constructed query
-- Get the statement handle "statement_id" PREPARE stmt_id FROM cust_qry;-- Declare the cursor for the prepared "statement_id"
-- get the cursor handle "cust_cur"DECLARE cust_cur cursor FOR stmt_id; -- Open the declared cursor using handle "cust_cur"
-- Supply the first_name as an input. This will be
-- substituted in the place of "?" in the query 本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/ibminformix/archive/2009/11/19/4833481.aspx
INFORMIX IDS11.5 动态存储过程（DYNAMIC SPL） - INFORM...
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