Add collation and charset support for mariadb and mysql5

Author: kzajaczkowski

dbt/adapters/mariadb/connections.py

@@ -26,6 +26,7 @@ class MariaDBCredentials(Credentials):
     password: Optional[str] = None
     charset: Optional[str] = None
     ssl_disabled: Optional[bool] = None
+    collation: Optional[str] = None
 
     _ALIASES = {
         "UID": "username",
@@ -98,6 +99,12 @@ def open(cls, connection):
         if credentials.port:
             kwargs["port"] = credentials.port
 
+        if credentials.charset:
+            kwargs["charset"] = credentials.charset
+
+        if credentials.collation:
+            kwargs["collation"] = credentials.collation
+
         try:
             connection.handle = mysql.connector.connect(**kwargs)
             connection.state = "open"

dbt/adapters/mysql5/connections.py

@@ -26,6 +26,7 @@ class MySQLCredentials(Credentials):
     password: Optional[str] = None
     charset: Optional[str] = None
     ssl_disabled: Optional[bool] = None
+    collation: Optional[str] = None
 
     _ALIASES = {
         "UID": "username",
@@ -98,6 +99,12 @@ def open(cls, connection):
         if credentials.port:
             kwargs["port"] = credentials.port
 
+        if credentials.charset:
+            kwargs["charset"] = credentials.charset
+
+        if credentials.collation:
+            kwargs["collation"] = credentials.collation
+
         try:
             connection.handle = mysql.connector.connect(**kwargs)
             connection.state = "open"