我是 SAP HANA 的新手,我正在尝试生成一个查询并在存储过程中执行它。
我遇到了一个错误,我不确定 HANA 可以做这样的事情。
这是我的代码
CREATE PROCEDURE "PROCEDURE_IBA_TESTCSV"(
IN SCHEMA_NAME VARCHAR(100))
LANGUAGE SQLSCRIPT SQL SECURITY INVOKER AS
BEGIN
DECLARE T VARCHAR(1000);
DECLARE TA VARCHAR(1000);
SELECT
' SELECT ' || MAX(C_1) || IFNULL(MAX(C_2),'')|| IFNULL(MAX(C_3),'') ||' AS STATEMENT FROM ' || SCHEMA_NAME || '.' || TABLE_NAME || ' ' INTO T
FROM (
SELECT POSITION, DATA_TYPE_ID, COLUMN_NAME ,SCHEMA_NAME, TABLE_NAME ,
CASE WHEN POSITION = 1 THEN
' CASE WHEN ( '|| COLUMN_NAME ||' IS NULL ) THEN '''' ELSE REPLACE(TO_CHAR(' || COLUMN_NAME || '),''.'','','') END' END AS C_1,
CASE WHEN POSITION = 2 THEN '||''#''|| CASE WHEN ( '|| COLUMN_NAME ||' IS NULL ) THEN '''' ELSE TO_NVARCHAR('||COLUMN_NAME||') END' END AS C_2,
CASE WHEN POSITION = 3 THEN '||''#''|| CASE WHEN ( '|| COLUMN_NAME ||' IS NULL ) THEN '''' ELSE TO_NVARCHAR('||COLUMN_NAME||') END' END AS C_3
FROM (
select SCALE,SCHEMA_NAME,position,TABLE_NAME,column_name, data_type_id from TABLE_COLUMNS where
schema_name ='IMPORT_KT_STAMM_IK_348BA_20160706' AND TABLE_NAME='CLS_220_KTHISTORIE')) group by SCHEMA_NAME,TABLE_NAME;
execute immediate :T ;
INSERT INTO Test SELECT :T from DUMMY;
END;
我想将此输出的 SUM(length) 存储到同一过程中的变量中。
那可能吗 ?有什么帮助吗?
提前致谢