a
    xd>                     @   sX   d dl Z d dlmZ d dlmZ d dlmZ d dlmZ d dl	m
Z
 G dd deZdS )	    N)settings)BaseDatabaseOperations)timezoneduration_microseconds)	force_strc                       s  e Zd ZdZi ejddddZdddddd	dddd
d
d
dZd	ZdZdd Z	dd Z
dd Zdd Zdd Zdd Zdd Zdd Zdd Zdd  Zd!d" Zd#d$ Zd%d& Zd'd( Zd)d* Zd+d, Zd-d. Zd/d0 Zd1d1d2d3d4Zd5d6 Zd7d8 Zd9d: Zd;d< Zd=d> Z d?d@ Z! fdAdBZ" fdCdDZ#dEdF Z$dGdH Z%dIdJ Z&dKdL Z'dMdN Z(dX fdPdQ	Z)dRdS Z*dY fdTdU	Z+dZdVdWZ,  Z-S )[DatabaseOperationsz!django.db.backends.mysql.compiler)r   i  )r   l    )r       )PositiveSmallIntegerFieldPositiveIntegerFieldPositiveBigIntegerFieldzsigned integerzchar(%(max_length)s)z+decimal(%(max_digits)s, %(decimal_places)s)charzunsigned integer)Z	AutoFieldZBigAutoFieldZSmallAutoFieldZ	CharFieldZDecimalFieldZ	TextFieldZIntegerFieldZBigIntegerFieldZSmallIntegerFieldr   r   r
   ZEXPLAINc                 C   sT   |dkrd| S |dkr d| S |dkr0d| S |dkr@d| S d	|  |f S d S )
NZweek_dayzDAYOFWEEK(%s)Ziso_week_dayzWEEKDAY(%s) + 1weekzWEEK(%s, 3)Ziso_yearz#TRUNCATE(YEARWEEK(%s, 3), -2) / 100zEXTRACT(%s FROM %s))upper)selflookup_type
field_name r   [/var/www/html/Ranjet/env/lib/python3.9/site-packages/django/db/backends/mysql/operations.pydate_extract_sql%   s    z#DatabaseOperations.date_extract_sqlc                 C   sZ   ddd}||v r&|| }d||f S |dkr:d||f S |dkrNd||f S d	| S d S )
Nz	%%Y-01-01z
%%Y-%%m-01)yearmonthz#CAST(DATE_FORMAT(%s, '%s') AS DATE)quarterzIMAKEDATE(YEAR(%s), 1) + INTERVAL QUARTER(%s) QUARTER - INTERVAL 1 QUARTERr   z&DATE_SUB(%s, INTERVAL WEEKDAY(%s) DAY)DATE(%s)r   r   r   r   fields
format_strr   r   r   date_trunc_sql:   s    z!DatabaseOperations.date_trunc_sqlc                 C   s8   d|v r|| dd  S d|v r4|| dd  S |S )N+-)find)r   tznamer   r   r   _prepare_tzname_deltaM   s
    z(DatabaseOperations._prepare_tzname_deltac                 C   s.   t jr*| jj|kr*d|| jj| |f }|S )NzCONVERT_TZ(%s, '%s', '%s'))r   USE_TZ
connectionZtimezone_namer"   r   r   r!   r   r   r   _convert_field_to_tzT   s    z'DatabaseOperations._convert_field_to_tzc                 C   s   |  ||}d| S )Nr   r&   r%   r   r   r   datetime_cast_date_sql]   s    z)DatabaseOperations.datetime_cast_date_sqlc                 C   s   |  ||}d| S )NTIME(%s)r'   r%   r   r   r   datetime_cast_time_sqla   s    z)DatabaseOperations.datetime_cast_time_sqlc                 C   s   |  ||}| ||S N)r&   r   )r   r   r   r!   r   r   r   datetime_extract_sqle   s    z'DatabaseOperations.datetime_extract_sqlc           
      C   s   |  ||}g d}d}d}|dkr0dj|dS |dkrDdj|dS z||d	 }W n tyl   |}Y n,0 d
|d | ||d   }	d||	f }|S )N)r   r   dayhourminutesecond)z%%Y-z%%mz-%%dz %%H:z%%iz:%%s)z0000-Z01z-01z 00:Z00z:00r   zCAST(DATE_FORMAT(MAKEDATE(YEAR({field_name}), 1) + INTERVAL QUARTER({field_name}) QUARTER - INTERVAL 1 QUARTER, '%%Y-%%m-01 00:00:00') AS DATETIME))r   r   zqCAST(DATE_FORMAT(DATE_SUB({field_name}, INTERVAL WEEKDAY({field_name}) DAY), '%%Y-%%m-%%d 00:00:00') AS DATETIME)    z'CAST(DATE_FORMAT(%s, '%s') AS DATETIME))r&   formatindex
ValueErrorjoin)
r   r   r   r!   r   r3   Z
format_defisqlr   r   r   r   datetime_trunc_sqli   s*    
z%DatabaseOperations.datetime_trunc_sqlc                 C   s4   dddd}||v r(|| }d||f S d| S d S )Nz	%%H:00:00z
%%H:%%i:00z%%H:%%i:%%s)r.   r/   r0   z#CAST(DATE_FORMAT(%s, '%s') AS TIME)r)   r   r   r   r   r   time_trunc_sql   s    z!DatabaseOperations.time_trunc_sqlc                 C   s   dt | S NzINTERVAL %s MICROSECONDr   )r   	timedeltar   r   r   date_interval_sql   s    z$DatabaseOperations.date_interval_sqlc                 C   s   |  S )z
        Given a cursor object that has just performed an INSERT...RETURNING
        statement into a table, return the tuple of returned data.
        )Zfetchall)r   cursorr   r   r   fetch_returned_insert_rows   s    z-DatabaseOperations.fetch_returned_insert_rowsc                 C   s   d| S r;   r   )r   r8   r   r   r   format_for_duration_arithmetic   s    z1DatabaseOperations.format_for_duration_arithmeticc                 C   s   ddg dffgS )z
        "ORDER BY NULL" prevents MySQL from implicitly ordering by grouped
        columns. If no ordering would otherwise be applied, we don't want any
        implicit sorting going on.
        NZNULLFr   r   r   r   r   force_no_ordering   s    z$DatabaseOperations.force_no_orderingc                 C   s   t t|dd ddS )NZ	_executedreplace)errors)r   getattr)r   r>   r8   paramsr   r   r   last_executed_query   s    z&DatabaseOperations.last_executed_queryc                 C   s   dS )Nr	   r   rA   r   r   r   no_limit_value   s    z!DatabaseOperations.no_limit_valuec                 C   s    | dr|dr|S d| S )N`z`%s`)
startswithendswith)r   namer   r   r   
quote_name   s    zDatabaseOperations.quote_namec                 C   s   dS )NzRAND()r   rA   r   r   r   random_function_sql   s    z&DatabaseOperations.random_function_sqlc                    s,   |sdS  fdd|D }dd | dfS )N)r2   r   c                    s,   g | ]$}d   |jjj  |jf qS )z%s.%s)rM   modelZ_metaZdb_tablecolumn).0fieldrA   r   r   
<listcomp>   s
   
z<DatabaseOperations.return_insert_columns.<locals>.<listcomp>zRETURNING %s, r   r6   )r   r   columnsr   rA   r   return_insert_columns   s    
z(DatabaseOperations.return_insert_columnsF)reset_sequencesallow_cascadec                   sV   |sg S dg}|r.|  fdd|D  n|  fdd|D  |d |S )NzSET FOREIGN_KEY_CHECKS = 0;c                 3   s,   | ]$}d  d |f V  qdS )z%s %s;ZTRUNCATENZSQL_KEYWORDZ	SQL_FIELDrM   rQ   Z
table_namer   styler   r   	<genexpr>   s
   z/DatabaseOperations.sql_flush.<locals>.<genexpr>c              	   3   s4   | ],}d  d d |f V  qdS )z	%s %s %s;DELETEZFROMNrZ   r[   r\   r   r   r^      s   zSET FOREIGN_KEY_CHECKS = 1;)extendappend)r   r]   ZtablesrX   rY   r8   r   r\   r   	sql_flush   s    
	
zDatabaseOperations.sql_flushc                    s    fdd|D S )Nc                    s>   g | ]6}d  d d |d df qS )z%s %s %s %s = 1;ZALTERZTABLEtableZAUTO_INCREMENTrZ   )rQ   Zsequence_infor\   r   r   rS      s   zADatabaseOperations.sequence_reset_by_name_sql.<locals>.<listcomp>r   )r   r]   	sequencesr   r\   r   sequence_reset_by_name_sql   s    z-DatabaseOperations.sequence_reset_by_name_sqlc                 C   s   |dkrt d|S )Nr   z@The database backend does not accept 0 as a value for AutoField.)r5   r   valuer   r   r   validate_autopk_value   s    z(DatabaseOperations.validate_autopk_valuec                 C   sL   |d u rd S t |dr|S t|rDtjr<t|| jj}ntdt|S )Nresolve_expressionzMMySQL backend does not support timezone-aware datetimes when USE_TZ is False.)	hasattrr   is_awarer   r#   Z
make_naiver$   r5   strrf   r   r   r   adapt_datetimefield_value   s    

z,DatabaseOperations.adapt_datetimefield_valuec                 C   s4   |d u rd S t |dr|S t|r,tdt|S )Nri   z4MySQL backend does not support timezone-aware times.)rj   r   rk   r5   rl   rf   r   r   r   adapt_timefield_value   s    

z(DatabaseOperations.adapt_timefield_valuec                 C   s   dS )N@   r   rA   r   r   r   max_name_length  s    z"DatabaseOperations.max_name_lengthc                 C   s*   dd |D }d dd |D }d| S )Nc                 s   s   | ]}d  |V  qdS )rT   NrU   )rQ   rowr   r   r   r^         z5DatabaseOperations.bulk_insert_sql.<locals>.<genexpr>rT   c                 s   s   | ]}d | V  qdS )z(%s)Nr   )rQ   r8   r   r   r   r^     rr   zVALUES rU   )r   r   Zplaceholder_rowsZplaceholder_rows_sqlZ
values_sqlr   r   r   bulk_insert_sql  s    z"DatabaseOperations.bulk_insert_sqlc                    sh   |dkrdd | S |dv r<|dkr*dn|}d| | S |dkrZ|\}}d||d	 S t ||S )
N^zPOW(%s),)&|z<<#rx   zCONVERT(%s, SIGNED)z>>z FLOOR(%(lhs)s / POW(2, %(rhs)s))lhsrhs)r6   supercombine_expression)r   Z	connectorZsub_expressionsrz   r{   	__class__r   r   r}     s    z%DatabaseOperations.combine_expressionc                    s`   t  |}|j }|dv r,|| j n0|dkrHtjr\|| j n|dkr\|| j	 |S )N)ZBooleanFieldZNullBooleanFieldZDateTimeFieldZ	UUIDField)
r|   get_db_convertersZoutput_fieldZget_internal_typera   convert_booleanfield_valuer   r#   convert_datetimefield_valueconvert_uuidfield_value)r   
expression
convertersinternal_typer~   r   r   r   #  s    
z$DatabaseOperations.get_db_convertersc                 C   s   |dv rt |}|S )N)r   r1   )boolr   rg   r   r$   r   r   r   r   /  s    z-DatabaseOperations.convert_booleanfield_valuec                 C   s   |d urt || jj }|S r+   )r   Z
make_awarer$   r   r   r   r   r   4  s    z.DatabaseOperations.convert_datetimefield_valuec                 C   s   |d urt |}|S r+   )uuidUUIDr   r   r   r   r   9  s    
z*DatabaseOperations.convert_uuidfield_valuec                 C   s   |d urt |dsdS dS )NZas_sqlz
_binary %s%s)rj   rf   r   r   r   binary_placeholder_sql>  s    z)DatabaseOperations.binary_placeholder_sqlc           	      C   s   |\}}|\}}|dkrb| j jr<d||d g ||R fS d||d t|d t|d  fS g ||R }d||f |fS )NZ	TimeFieldzGCAST((TIME_TO_SEC(%(lhs)s) - TIME_TO_SEC(%(rhs)s)) * 1000000 AS SIGNED)ry   zs((TIME_TO_SEC(%(lhs)s) * 1000000 + MICROSECOND(%(lhs)s)) - (TIME_TO_SEC(%(rhs)s) * 1000000 + MICROSECOND(%(rhs)s)))   z"TIMESTAMPDIFF(MICROSECOND, %s, %s))r$   mysql_is_mariadbtuple)	r   r   rz   r{   Zlhs_sqlZ
lhs_paramsZrhs_sqlZ
rhs_paramsrF   r   r   r   subtract_temporalsA  s     z%DatabaseOperations.subtract_temporalsNc                    s   |r|  dkrd}n|s,d| jjjv r,d}|dd}t j|fi |}|rn| jjjrn| jjrfdn|d }|r|r~| jjr|d| 7 }| jjj	r|s|d u r|d	7 }|S )
NZTEXTZTRADITIONALZTREEanalyzeFZANALYZEz ANALYZEz
 FORMAT=%sz	 EXTENDED)
r   r$   featuresZsupported_explain_formatspopr|   explain_query_prefixZsupports_explain_analyzer   Zneeds_explain_extended)r   r3   optionsr   prefixr~   r   r   r   R  s    z'DatabaseOperations.explain_query_prefixc                 C   s<   | j jdk s| j jr$|dkr dS dS |dkr0dnd}d| S )N)   r   r   regexz%s REGEXP BINARY %sz%s REGEXP %scr7   zREGEXP_LIKE(%%s, %%s, '%s'))r$   Zmysql_versionr   )r   r   Zmatch_optionr   r   r   regex_lookupf  s    zDatabaseOperations.regex_lookupc                    s   |rdS t  |S )NzINSERT IGNORE INTO)r|   insert_statement)r   Zignore_conflictsr~   r   r   r   q  s    z#DatabaseOperations.insert_statementc                 C   s$   d}|dkr | j js|dv r d}|S )Nr   Z	JSONField)	ZiexactcontainsZ	icontainsrJ   ZistartswithrK   Z	iendswithr   ZiregexzJSON_UNQUOTE(%s))r$   r   )r   r   r   lookupr   r   r   lookup_castt  s
    zDatabaseOperations.lookup_cast)N)F)N).__name__
__module____qualname__Zcompiler_moduler   Zinteger_field_rangesZcast_data_typesZ"cast_char_field_without_max_lengthZexplain_prefixr   r   r"   r&   r(   r*   r,   r9   r:   r=   r?   r@   rB   rG   rH   rM   rN   rW   rb   re   rh   rm   rn   rp   rs   r}   r   r   r   r   r   r   r   r   r   r   __classcell__r   r   r~   r   r   
   sv   	
r   )r   Zdjango.confr   Z"django.db.backends.base.operationsr   Zdjango.utilsr   Zdjango.utils.durationr   Zdjango.utils.encodingr   r   r   r   r   r   <module>   s   