키워드 추출 최대주 가능 수만틈 추출하도록 변경

src/main/resources/egovframework/mapper/nlib/cmm/MainDAO_SQL.xml

@@ -7,12 +7,17 @@
  	<select id="listKeywords" parameterType="String" resultType="EgovMap">
         <![CDATA[ 	  
 		SELECT T.KEY_NAME, COUNT(KEY_NAME) AS CNT 
-		FROM(
+		FROM (
 		    SELECT          
 		         TRIM(SUBSTRING_INDEX(SUBSTRING_INDEX(RM.KEYWORD, ';', NUMBERS.N), ';', -1)) AS KEY_NAME    
-		    FROM        
-		    (
-		        SELECT 1 N UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5
+		    FROM (WITH RECURSIVE W1 AS (
+                 SELECT 1 AS N
+                 UNION ALL
+                 SELECT 1+W1.N AS N
+                 FROM W1
+                 WHERE W1.N < 500
+	             )
+	             SELECT N FROM W1
 		    ) NUMBERS       
 		    INNER JOIN RG_MASTER RM
 		    ON CHAR_LENGTH(RM.KEYWORD)-CHAR_LENGTH(REPLACE(RM.KEYWORD, ';', '')) >= NUMBERS.N-1