diff --git a/src/python/DataEraHistory.py b/src/python/DataEraHistory.py
index 09adf5c..d29adf2 100644
--- a/src/python/DataEraHistory.py
+++ b/src/python/DataEraHistory.py
@@ -21,7 +21,7 @@ def get(self, era):
     sql_with_era = """
             SELECT acq_era, MAX(run) max_run, MIN(run) min_run
             FROM run_config
-            WHERE acq_era LIKE :acq_era
+            WHERE acq_era LIKE :acq_era 
             GROUP BY acq_era
             ORDER BY max_run DESC, min_run DESC
             """
@@ -35,8 +35,7 @@ def get(self, era):
     
 
     if era is not None:
-       acq_era = "{}%".format(era)
-       c, _ = self.api.execute(sql_with_era, acq_era)
+       c, _ = self.api.execute(sql_with_era, acq_era = '%' + str(era) + '%')
     else:
        c, _ = self.api.execute(sql_no_era)
 
diff --git a/src/python/DataGlobalTagHistory.py b/src/python/DataGlobalTagHistory.py
index 310bd3b..8631894 100644
--- a/src/python/DataGlobalTagHistory.py
+++ b/src/python/DataGlobalTagHistory.py
@@ -19,52 +19,42 @@ def get(self, express_global_tag, prompt_global_tag):
     :arg str era: the acquisition era
     :returns: global tags, minimum run, and maximum run"""
 
+    sql = """
+            SELECT express_config.global_tag gt_express, reco_config.global_tag gt_prompt, MAX(run_config.run) AS max_run, MIN(run_config.run) AS min_run
+            FROM run_config
+            JOIN express_config ON express_config.run = run_config.run
+            JOIN reco_config ON reco_config.run = run_config.run
+            """
     sql_express = """
-            SELECT global_tag gt_express, MAX(run) max_run, MIN(run) min_run
-            FROM express_config
-            WHERE global_tag LIKE :gt_express
-            GROUP BY global_tag
+            WHERE express_config.global_tag LIKE :gt_express
+            """
+    sql_ = """
+            GROUP BY express_config.global_tag, reco_config.global_tag
             ORDER BY max_run DESC, min_run DESC
             """
 
     sql_prompt = """
-            SELECT global_tag gt_prompt, MAX(run) max_run, MIN(run) min_run
-            FROM reco_config
-            WHERE global_tag LIKE :gt_prompt
-            GROUP BY global_tag
-            ORDER BY max_run DESC, min_run DESC
+            WHERE reco_config.global_tag LIKE :gt_prompt
             """
     sql_both = """
-            SELECT reco_config.global_tag gt_prompt, express_config.global_tag gt_express, MAX(run_config.run) AS max_run, MIN(run_config.run) AS min_run
-            FROM run_config
-            JOIN express_config ON express_config.run = run_config.run
-            JOIN reco_config ON reco_config.run = run_config.run
-            WHERE global_tag LIKE :gt_express AND global_tag LIKE :gt_prompt
-            GROUP BY reco_config.global_tag, express_config.global_tag
-            ORDER BY max_run DESC, min_run DESC
-            """
-    sql_none = """
-            SELECT reco_config.global_tag gt_prompt, express_config.global_tag gt_express, MAX(run_config.run) AS max_run, MIN(run_config.run) AS min_run
-            FROM run_config
-            JOIN express_config ON express_config.run = run_config.run
-            JOIN reco_config ON reco_config.run = run_config.run
-            GROUP BY reco_config.global_tag, express_config.global_tag
-            ORDER BY max_run DESC, min_run DESC
+            WHERE reco_config.global_tag LIKE :gt_prompt AND express_config.global_tag LIKE :gt_express
             """
     
+    
 
     if express_global_tag is not None and prompt_global_tag is not None:
-       gt_express = '{}%'.format(express_global_tag)
-       gt_prompt = '{}%'.format(prompt_global_tag)
-       c, _ = self.api.execute(sql_both, gt_express, gt_prompt)
+       sq = sql + sql_both + sql_
+       c, _ = self.api.execute(sq, gt_express = '%' + str(express_global_tag) + '%', gt_prompt = '%' + str(prompt_global_tag) + '%')
     elif express_global_tag is not None and prompt_global_tag is None:
-       gt_express = '{}%'.format(express_global_tag)
-       c, _ = self.api.execute(sql_express, gt_express)
+       sq = sql + sql_express + sql_
+       c, _ = self.api.execute(sq, gt_express = '%' + str(express_global_tag) + '%')
     elif express_global_tag is None and prompt_global_tag is not None:
-       gt_prompt = '{}%'.format(prompt_global_tag)
-       c, _ = self.api.execute(sql_prompt, gt_prompt)
+       sq = sql + sql_prompt + sql_
+       c, _ = self.api.execute(sq, gt_prompt = '%' + str(prompt_global_tag) + '%')
     else:
-       c, _ = self.api.execute(sql_none)
+       sq = sql + sql_
+       c, _ = self.api.execute(sq)
+
        
     configs = []
     for result in c.fetchall():
diff --git a/src/python/Regexps.py b/src/python/Regexps.py
index 0adf1fc..dd5cae1 100644
--- a/src/python/Regexps.py
+++ b/src/python/Regexps.py
@@ -6,6 +6,7 @@
 RX_STREAM = re.compile(r"[A-Z][0-9a-zA-Z]+")
 RX_PRIMARY_DATASET = re.compile(r"[A-Z][0-9a-zA-Z]+")
 RX_SCENARIO = re.compile(r"[a-zA-Z][0-9a-zA-Z]+")
-RX_ERA = re.compile(r"[a-zA-Z][0-9a-zA-Z]+")
-RX_EXPRESS_GLOBAL_TAG = re.compile(r"[1-9][0-9a-zA-Z]+")
-RX_PROMPT_GLOBAL_TAG = re.compile(r"[1-9][0-9a-zA-Z]+")
+RX_ERA = re.compile(r"[0-9_a-zA-Z]+")
+RX_EXPRESS_GLOBAL_TAG = re.compile(r"[0-9_a-zA-Z]+")
+RX_PROMPT_GLOBAL_TAG = re.compile(r"[0-9_a-zA-Z]+")
+