U
    8ÄT_Ú>  ã                   @   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ƒZdS )	é    N)Úsettings)ÚBaseDatabaseOperations)Útimezone©Úduration_microseconds)Ú	force_strc                       sŠ  e Zd ZdZejddddœ–Zdddddd	dddd
d
d
dœ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$„ Zd%d&„ Zd'd(„ Zd)d*„ Zd+d,„ Zd-d.„ Zd/d0„ Zd1d1d2œd3d4„Zd5d6„ Zd7d8„ Zd9d:„ Zd;d<„ Zd=d>„ Z d?d@„ Z!‡ fdAdB„Z"‡ fdCdD„Z#dEdF„ Z$dGdH„ Z%dIdJ„ Z&dKdL„ Z'dMdN„ Z(dX‡ fdPdQ„	Z)dRdS„ Z*dY‡ fdTdU„	Z+dZdVdW„Z,‡  Z-S )[ÚDatabaseOperationsz!django.db.backends.mysql.compiler)r   iÿÿ  )r   l   ÿÿ )r   ì   ÿÿÿÿ )ÚPositiveSmallIntegerFieldÚPositiveIntegerFieldÚPositiveBigIntegerFieldzsigned integerzchar(%(max_length)s)z+decimal(%(max_digits)s, %(decimal_places)s)Ú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) + 1ÚweekzWEEK(%s, 3)Ziso_yearz#TRUNCATE(YEARWEEK(%s, 3), -2) / 100zEXTRACT(%s FROM %s))Úupper)ÚselfÚlookup_typeÚ
field_name© r   úG/tmp/pip-unpacked-wheel-dv63caxw/django/db/backends/mysql/operations.pyÚdate_extract_sql%   s    z#DatabaseOperations.date_extract_sqlc                 C   sZ   dddœ}||k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)ÚyearÚmonthz#CAST(DATE_FORMAT(%s, '%s') AS DATE)ÚquarterzIMAKEDATE(YEAR(%s), 1) + INTERVAL QUARTER(%s) QUARTER - INTERVAL 1 QUARTERr   z&DATE_SUB(%s, INTERVAL WEEKDAY(%s) DAY)úDATE(%s)r   ©r   r   r   ÚfieldsÚ
format_strr   r   r   Údate_trunc_sql:   s"    þ ÿ ÿz!DatabaseOperations.date_trunc_sqlc                 C   s8   d|kr||  d¡d … S d|kr4||  d¡d … S |S )Nú+ú-)Úfind)r   Útznamer   r   r   Ú_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   ÚUSE_TZÚ
connectionZtimezone_namer"   ©r   r   r!   r   r   r   Ú_convert_field_to_tzT   s    ýz'DatabaseOperations._convert_field_to_tzc                 C   s   |   ||¡}d| S )Nr   ©r&   r%   r   r   r   Údatetime_cast_date_sql]   s    z)DatabaseOperations.datetime_cast_date_sqlc                 C   s   |   ||¡}d| S )NúTIME(%s)r'   r%   r   r   r   Údatetime_cast_time_sqla   s    z)DatabaseOperations.datetime_cast_time_sqlc                 C   s   |   ||¡}|  ||¡S ©N)r&   r   )r   r   r   r!   r   r   r   Údatetime_extract_sqle   s    z'DatabaseOperations.datetime_extract_sqlc           
      C   s¦   |   ||¡}ddddddg}d}d}|d	kr8d
j|d�S |dkrLdj|d�S z| |¡d }W n tk
rv   |}Y n,X d |d |… ||d …  ¡}	d||	f }|S )Nr   r   ÚdayÚhourÚminuteÚsecond)z%%Y-z%%mz-%%dz %%H:z%%iz:%%s)z0000-Z01z-01z 00:Z00z:00r   z“CAST(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)é   Ú z'CAST(DATE_FORMAT(%s, '%s') AS DATETIME))r&   ÚformatÚindexÚ
ValueErrorÚjoin)
r   r   r   r!   r   r3   Z
format_defÚiÚsqlr   r   r   r   Údatetime_trunc_sqli   s*    ÿüÿü
z%DatabaseOperations.datetime_trunc_sqlc                 C   s4   ddddœ}||k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   Útime_trunc_sqlƒ   s    ýz!DatabaseOperations.time_trunc_sqlc                 C   s   dt |ƒ S ©NzINTERVAL %s MICROSECONDr   )r   Ú	timedeltar   r   r   Údate_interval_sql�   s    z$DatabaseOperations.date_interval_sqlc                 C   s   |  ¡ S )z˜
        Given a cursor object that has just performed an INSERT...RETURNING
        statement into a table, return the tuple of returned data.
        )Zfetchall)r   Úcursorr   r   r   Úfetch_returned_insert_rows’   s    z-DatabaseOperations.fetch_returned_insert_rowsc                 C   s   d| S r;   r   )r   r8   r   r   r   Úformat_for_duration_arithmetic™   s    z1DatabaseOperations.format_for_duration_arithmeticc                 C   s   ddg dffgS )zÅ
        "ORDER BY NULL" prevents MySQL from implicitly ordering by grouped
        columns. If no ordering would otherwise be applied, we don't want any
        implicit sorting going on.
        NZNULLFr   ©r   r   r   r   Úforce_no_orderingœ   s    z$DatabaseOperations.force_no_orderingc                 C   s   t t|dd ƒdd�S )NZ	_executedÚreplace)Úerrors)r   Úgetattr)r   r>   r8   Úparamsr   r   r   Úlast_executed_query¤   s    z&DatabaseOperations.last_executed_queryc                 C   s   dS )Nr	   r   rA   r   r   r   Úno_limit_value«   s    z!DatabaseOperations.no_limit_valuec                 C   s    |  d¡r| d¡r|S d| S )Nú`z`%s`)Ú
startswithÚendswith)r   Únamer   r   r   Ú
quote_name¯   s    zDatabaseOperations.quote_namec                 C   s   dS )NzRAND()r   rA   r   r   r   Úrandom_function_sql´   s    z&DatabaseOperations.random_function_sqlc                    s,   |sdS ‡ fdd„|D ƒ}dd  |¡ dfS )N)r2   r   c                    s,   g | ]$}d ˆ   |jjj¡ˆ   |j¡f ‘qS )z%s.%s)rM   ÚmodelZ_metaZdb_tableÚcolumn)Ú.0ÚfieldrA   r   r   Ú
<listcomp>¼   s
   ý
þz<DatabaseOperations.return_insert_columns.<locals>.<listcomp>zRETURNING %sú, r   ©r6   )r   r   Úcolumnsr   rA   r   Úreturn_insert_columns·   s    
üz(DatabaseOperations.return_insert_columnsF)Úreset_sequencesÚallow_cascadec                   sV   |sg S dg}|r.|  ‡ ‡fdd„|D ƒ¡ n|  ‡ ‡fdd„|D ƒ¡ | d¡ |S )NzSET FOREIGN_KEY_CHECKS = 0;c                 3   s,   | ]$}d ˆ  d¡ˆ ˆ  |¡¡f V  qdS )z%s %s;ZTRUNCATEN©ZSQL_KEYWORDZ	SQL_FIELDrM   ©rQ   Z
table_name©r   Ústyler   r   Ú	<genexpr>Ì   s
   ýþz/DatabaseOperations.sql_flush.<locals>.<genexpr>c              	   3   s4   | ],}d ˆ  d¡ˆ  d¡ˆ ˆ  |¡¡f V  qdS )z	%s %s %s;ÚDELETEZFROMNrZ   r[   r\   r   r   r^   Õ   s   üýzSET FOREIGN_KEY_CHECKS = 1;)ÚextendÚappend)r   r]   ÚtablesrX   rY   r8   r   r\   r   Ú	sql_flushÄ   s    ü
	û
zDatabaseOperations.sql_flushc                    s   ‡ ‡fdd„|D ƒS )Nc                    s>   g | ]6}d ˆ  d¡ˆ  d¡ˆ ˆ  |d ¡¡ˆ d¡f ‘qS )z%s %s %s %s = 1;ZALTERZTABLEÚtableZAUTO_INCREMENTrZ   )rQ   Zsequence_infor\   r   r   rS   à   s   ûüzADatabaseOperations.sequence_reset_by_name_sql.<locals>.<listcomp>r   )r   r]   Ú	sequencesr   r\   r   Úsequence_reset_by_name_sqlß   s    úz-DatabaseOperations.sequence_reset_by_name_sqlc                 C   s   |dkrt dƒ‚|S )Nr   z@The database backend does not accept 0 as a value for AutoField.)r5   ©r   Úvaluer   r   r   Úvalidate_autopk_valueé   s    z(DatabaseOperations.validate_autopk_valuec                 C   sL   |d krd S t |dƒr|S t |¡rDtjr<t || jj¡}ntdƒ‚t|ƒS )NÚresolve_expressionzMMySQL backend does not support timezone-aware datetimes when USE_TZ is False.)	Úhasattrr   Úis_awarer   r#   Z
make_naiver$   r5   Ústrrg   r   r   r   Úadapt_datetimefield_valueð   s    

z,DatabaseOperations.adapt_datetimefield_valuec                 C   s4   |d krd S t |dƒr|S t |¡r,tdƒ‚t|ƒS )Nrj   z4MySQL backend does not support timezone-aware times.)rk   r   rl   r5   rm   rg   r   r   r   Úadapt_timefield_value   s    

z(DatabaseOperations.adapt_timefield_valuec                 C   s   dS )Né@   r   rA   r   r   r   Úmax_name_length  s    z"DatabaseOperations.max_name_lengthc                 C   s*   dd„ |D ƒ}d  dd„ |D ƒ¡}d| S )Nc                 s   s   | ]}d   |¡V  qdS )rT   NrU   )rQ   Úrowr   r   r   r^     s     z5DatabaseOperations.bulk_insert_sql.<locals>.<genexpr>rT   c                 s   s   | ]}d | V  qdS )z(%s)Nr   )rQ   r8   r   r   r   r^     s     zVALUES rU   )r   r   Zplaceholder_rowsZplaceholder_rows_sqlZ
values_sqlr   r   r   Úbulk_insert_sql  s    z"DatabaseOperations.bulk_insert_sqlc                    sh   |dkrdd  |¡ S |dkr<|dkr*dn|}d|  |¡ S |dkrZ|\}}d||d	œ S tƒ  ||¡S )
Nú^zPOW(%s)ú,)ú&ú|z<<ú#rx   zCONVERT(%s, SIGNED)z>>z FLOOR(%(lhs)s / POW(2, %(rhs)s))©ÚlhsÚrhs)r6   ÚsuperÚcombine_expression)r   Z	connectorZsub_expressionsrz   r{   ©Ú	__class__r   r   r}     s    z%DatabaseOperations.combine_expressionc                    s`   t ƒ  |¡}|j ¡ }|dkr,| | j¡ n0|dkrHtjr\| | j¡ n|dkr\| | j	¡ |S )N)ZBooleanFieldZNullBooleanFieldZDateTimeFieldZ	UUIDField)
r|   Úget_db_convertersZoutput_fieldZget_internal_typera   Úconvert_booleanfield_valuer   r#   Úconvert_datetimefield_valueÚconvert_uuidfield_value)r   Ú
expressionÚ
convertersÚinternal_typer~   r   r   r€   #  s    
z$DatabaseOperations.get_db_convertersc                 C   s   |dkrt |ƒ}|S )N)r   r1   )Úbool©r   rh   r„   r$   r   r   r   r�   /  s    z-DatabaseOperations.convert_booleanfield_valuec                 C   s   |d k	rt  || jj ¡}|S r+   )r   Z
make_awarer$   rˆ   r   r   r   r‚   4  s    z.DatabaseOperations.convert_datetimefield_valuec                 C   s   |d k	rt  |¡}|S r+   )ÚuuidÚUUIDrˆ   r   r   r   rƒ   9  s    
z*DatabaseOperations.convert_uuidfield_valuec                 C   s   |d k	rt |dƒsdS dS )NZas_sqlz
_binary %sú%s)rk   rg   r   r   r   Úbinary_placeholder_sql>  s    z)DatabaseOperations.binary_placeholder_sqlc           	      C   st   |\}}|\}}|dkr\| j jr6d||dœ ||˜fS d||dœ t|ƒd t|ƒd  fS ||˜}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)))é   z"TIMESTAMPDIFF(MICROSECOND, %s, %s))r$   Úmysql_is_mariadbÚtuple)	r   r†   rz   r{   Zlhs_sqlZ
lhs_paramsZrhs_sqlZ
rhs_paramsrF   r   r   r   Úsubtract_temporalsA  s"     ÿþýýz%DatabaseOperations.subtract_temporalsNc                    s¨   |r|  ¡ dkrd}n|s,d| jjjkr,d}| dd¡}tƒ j|f|Ž}|rj| jjjrj| jjrbdn|d }|r†|rz| jjr†|d| 7 }| jjj	r¤|s¤|d kr¤|d	7 }|S )
NZTEXTZTRADITIONALZTREEÚanalyzeFZANALYZEz ANALYZEz
 FORMAT=%sz	 EXTENDED)
r   r$   ÚfeaturesZsupported_explain_formatsÚpopr|   Úexplain_query_prefixZsupports_explain_analyzerŽ   Zneeds_explain_extended)r   r3   Úoptionsr‘   Úprefixr~   r   r   r”   R  s    z'DatabaseOperations.explain_query_prefixc                 C   s<   | j jdk s| j jr$|dkr dS dS |dkr0dnd}d| S )N)é   r   r   Úregexz%s REGEXP BINARY %sz%s REGEXP %sÚcr7   zREGEXP_LIKE(%%s, %%s, '%s'))r$   Zmysql_versionrŽ   )r   r   Zmatch_optionr   r   r   Úregex_lookupf  s    zDatabaseOperations.regex_lookupc                    s   |rdS t ƒ  |¡S )NzINSERT IGNORE INTO)r|   Úinsert_statement)r   Zignore_conflictsr~   r   r   r›   q  s    z#DatabaseOperations.insert_statementc                 C   s$   d}|dkr | j js|dkr d}|S )Nr‹   Z	JSONField)	ZiexactÚcontainsZ	icontainsrJ   ZistartswithrK   Z	iendswithr˜   ZiregexzJSON_UNQUOTE(%s))r$   rŽ   )r   r   r†   Úlookupr   r   r   Úlookup_castt  s
    zDatabaseOperations.lookup_cast)N)F)N).Ú__name__Ú
__module__Ú__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   rc   rf   ri   rn   ro   rq   rs   r}   r€   r�   r‚   rƒ   rŒ   r�   r”   rš   r›   rž   Ú__classcell__r   r   r~   r   r   
   sr   üô	
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   Ú<module>   s   