Updates related to SQL and limit and offset

app/db_sql.py

@@ -520,8 +520,8 @@ def sql_insert_or_update(
 
 # ### BEGIN ### Core Help CRUD ### sql_select() ###
 # The catch all SQL SELECT function - STI 2021-02-17
-# This one does it all for SQL SELECT queries
-# Updated 2021-09-07
+# This one does it all for SQL SELECT queries. It now works with limit and offset! - STI 2023-06-29
+# Updated 2023-06-29
 @logger_reset
 def sql_select(
         table_name: str|None = None,
@@ -529,6 +529,8 @@ def sql_select(
         record_id_random: str|None = None,
         field_name: str|None = None,
         field_value = None,
+        limit: int = 9999999,
+        offset: int = 0,
         sql: str|None = None,
         data: dict|None = None,
         rm_id_random: bool = False,
@@ -539,6 +541,12 @@ def sql_select(
         ) -> None|bool|dict|list:
     log.setLevel(log_lvl)
 
+    if limit >= 0 and offset >= 0:
+        log.info(f'Creating partial SQL string for LIMIT and OFFSET. Limit: {limit}; Offset: {offset}')
+        sql_limit_offset = f'LIMIT {limit} OFFSET {offset}'
+    else:
+        sql_limit_offset = ''
+
     if table_name and not (record_id or record_id_random or field_name or field_value or sql or data):
         # Select all records from a table
         log.info('Select all records from a table')
@@ -546,6 +554,7 @@ def sql_select(
             f"""
             SELECT *
             FROM `{table_name}`
+            {sql_limit_offset}
             ;
             """
         )
@@ -561,6 +570,7 @@ def sql_select(
                 SELECT *
                 FROM `{table_name}`
                 WHERE `{table_name}`.id = :record_id
+                {sql_limit_offset}
                 ;
                 """
             )
@@ -572,12 +582,14 @@ def sql_select(
                 SELECT *
                 FROM `{table_name}`
                 WHERE `{table_name}`.id_random = :record_id_random
+                {sql_limit_offset}
                 ;
                 """
             )
     elif table_name and field_name and field_value and not (record_id or record_id_random or sql or data):
         # Select all records from a table with a specific field and field value
         log.info('Select all records from a table with a specific field and field value')
+
         data = {}
         data[field_name] = field_value
 
@@ -586,6 +598,7 @@ def sql_select(
             SELECT *
             FROM `{table_name}`
             WHERE `{table_name}`.{field_name} = :{field_name}
+            {sql_limit_offset}
             ;
             """
         )
@@ -611,6 +624,7 @@ def sql_select(
             SELECT *
             FROM `{table_name}`
             WHERE {sql_where_string}
+            {sql_limit_offset}
             ;
             """
         )