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MSSQLGrammar.py
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MSSQLGrammar.py
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from .BaseGrammar import BaseGrammar
class MSSQLGrammar(BaseGrammar):
"""Microsoft SQL Server grammar class."""
aggregate_options = {
"SUM": "SUM",
"MAX": "MAX",
"MIN": "MIN",
"AVG": "AVG",
"COUNT": "COUNT",
"AVG": "AVG",
}
join_keywords = {
"inner": "INNER JOIN",
"join": "INNER JOIN",
"outer": "OUTER JOIN",
"left": "LEFT JOIN",
"right": "RIGHT JOIN",
"left_inner": "LEFT INNER JOIN",
"right_inner": "RIGHT INNER JOIN",
}
column_strings = {
"select": "{table}.[{column}]{alias}{separator}",
"select_all": "{table}.*{separator}",
"insert": "{table}.[{column}]{separator}",
"update": "{table}.[{column}]{separator}",
"delete": "{table}.[{column}]{separator}",
}
locks = {"share": "WITH(ROWLOCK)", "update": "WITH(ROWLOCK)"}
def select_no_table(self):
return "SELECT {columns}"
def select_format(self):
return "SELECT {limit} {columns} FROM {table} {lock} {joins} {wheres} {group_by} {order_by} {offset} {having}"
def update_format(self):
return "UPDATE {table} SET {key_equals} {wheres}"
def insert_format(self):
return "INSERT INTO {table} ({columns}) VALUES ({values})"
def bulk_insert_format(self):
return "INSERT INTO {table} ({columns}) VALUES {values}"
def delete_format(self):
return "DELETE FROM {table} {wheres}"
def create_column_string(self):
return "{column} {data_type}{length}{nullable}, "
def create_start(self):
return "CREATE TABLE {table} "
def having_string(self):
return "HAVING {column}"
def where_exists_string(self):
return "{keyword} EXISTS {value}"
def where_like_string(self):
return "{keyword} {column} LIKE {value}"
def where_not_like_string(self):
return "{keyword} {column} NOT LIKE {value}"
def having_equality_string(self):
return "HAVING {column} {equality} {value}"
def aggregate_string_without_alias(self):
return "{aggregate_function}({column})"
def create_column_length(self):
return "({length})"
def limit_string(self, offset=False):
if offset:
return ""
return "TOP {limit}"
def first_where_string(self):
return "WHERE"
def additional_where_string(self):
return "AND"
def join_string(self):
return "{keyword} {foreign_table}{alias} {on}"
def aggregate_string(self):
return "{aggregate_function}({column}) AS {alias}"
def subquery_string(self):
return "({query})"
def where_group_string(self):
return "{keyword} {value}"
def or_where_string(self):
return "OR"
def raw_query_string(self):
return "{keyword} {query}"
def where_in_string(self):
return "WHERE IN ({values})"
def value_equal_string(self):
return "{keyword} {value1} = {value2}"
def where_null_string(self):
return " {keyword} {column} IS NULL"
def between_string(self):
return "{keyword} {column} BETWEEN {low} AND {high}"
def not_between_string(self):
return "{keyword} {column} NOT BETWEEN {low} AND {high}"
def where_not_null_string(self):
return " {keyword} {column} IS NOT NULL"
def where_string(self):
return " {keyword} {column} {equality} {value}"
def offset_string(self):
return "OFFSET {offset} ROWS FETCH NEXT {limit} ROWS ONLY"
def increment_string(self):
return "{column} = {column} + '{value}'"
def decrement_string(self):
return "{column} = {column} - '{value}'"
def aggregate_string_with_alias(self):
return "{aggregate_function}({column}) AS {alias}"
def key_value_string(self):
return "{column} = '{value}'{separator}"
def column_value_string(self):
return "{column} = {value}{separator}"
def table_string(self):
return "[{table}]"
def order_by_format(self):
return "{column} {direction}"
def order_by_string(self):
return "ORDER BY {order_columns}"
def column_string(self):
return "[{column}]{separator}"
def table_column_string(self):
return "[{table}].[{column}]{separator}"
def table_update_column_string(self):
return "[{table}].[{column}]{separator}"
def table_insert_column_string(self):
return "[{table}].[{column}]{separator}"
def value_string(self):
return "'{value}'{separator}"
def wrap_table(self, table_name):
return self.table_string().format(table=table_name)
def truncate_table(self, table, foreign_keys=False):
return f"TRUNCATE TABLE {self.wrap_table(table)}"