Update SQL.java

Author: intisy

src/main/java/io/github/intisy/utils/custom/SQL.java

@@ -476,7 +476,7 @@ private String buildCreateTableStatement(String tableName, String[] constraints,
             return buildCreateTableStatement(tableName, columns);
 
         StringBuilder sb = new StringBuilder();
-        sb.append("CREATE TABLE ").append(tableName).append(" (");
+        sb.append("CREATE TABLE IF NOT EXISTS ").append(tableName).append(" (");
         for (String column : columns) {
             sb.append(column);
             sb.append(", ");