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POCase query is not working
 

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  1. POCase query is not working
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    <p>New to SQL and any help would be welcomed.</p> <p>Can anyone advise on the best approach for the creating the following query.</p> <pre><code> _hs_eb_code1 = 'bf', then set format = _hs_eb_det1 _hs_eb_code# = 'bf', then set format = _hs_eb_det# Repeat until _hs_eb_code# (1-9), </code></pre> <p>However if the character length of <code>_hs_eb_det1</code> exceeds 100 characters, then prefix with <code>'*'</code>. In addition _hs_eb_code1 = 'bf' is one, while _hs_eb_det1 will provide many in terms of results.</p> <p>So far, I can use case query to check for the first part, then build another query. I get lost.</p> <p>The query:</p> <pre><code> SELECT CASE WHEN LEN(FORMAT) &lt; 100 THEN LEFT(FORMAT,100) ELSE '*'+FORMAT END AS FORMAT FROM (SELECT CASE WHEN EXISTS (SELECT _HS_EB_CODE1 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE1 = 'BF') THEN _HS_EB_DET1 WHEN EXISTS (SELECT _HS_EB_CODE2 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE2 = 'BF') THEN _HS_EB_DET2 WHEN EXISTS (SELECT _HS_EB_CODE3 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE3 = 'BF') THEN _HS_EB_DET3 WHEN EXISTS (SELECT _HS_EB_CODE4 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE4 = 'BF') THEN _HS_EB_DET4 WHEN EXISTS (SELECT _HS_EB_CODE5 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE5 = 'BF') THEN _HS_EB_DET5 WHEN EXISTS (SELECT _HS_EB_CODE6 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE6 = 'BF') THEN _HS_EB_DET6 WHEN EXISTS (SELECT _HS_EB_CODE7 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE7 = 'BF') THEN _HS_EB_DET7 WHEN EXISTS (SELECT _HS_EB_CODE8 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE8 = 'BF') THEN _HS_EB_DET8 WHEN EXISTS (SELECT _HS_EB_CODE9 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE9 = 'BF') THEN _HS_EB_DET9 END ) AS FORMAT FROM DBO.SRC_TBM_BILLGRP </code></pre> <p>But I have a problem in that the query has one to many, therefore fails to work. WHEN EXISTS (SELECT _HS_EB_CODE1 FROM DBO.SRC_HBL_CLNT_CAT WHERE _HS_EB_CODE1 = 'BF') THEN _HS_EB_DET1 </p>
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