榜单
讯飞星火
服务器优惠
IT文库
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UPPER
upper description Syntax example keywords upper description Syntax VARCHAR upper(VARCHAR str) 将参数中所有的字符串都转换成大写，此函数的另一个别名为ucase 。 example mysql > SELECT upper ( "aBc12... -
UPPER
upper description Syntax example keywords upper description Syntax VARCHAR upper(VARCHAR str) Convert all strings in parameters to uppercase. Another alias for this func... -
LOWER
lower Description Syntax example keywords lower Description Syntax VARCHAR lower (VARCHAR str) Convert all strings in parameters to lowercase. Another alias for this fun... -
lower
lower description Syntax example keywords lower description Syntax INT lower(VARCHAR str) 将参数中所有的字符串都转换成小写 example mysql > SELECT lower ( "AbC123" ); +-------------... -
lower
lower description Syntax example keyword lower description Syntax INT lower(VARCHAR str) 将参数中所有的字符串都转换成小写 example mysql > SELECT lower ( "AbC123" ); +--------------... -
Data model flexibility
Data model Comparing wide-table and narrow-table models Narrow-table model note When to choose a narrow-table model Wide-table model note JOINs with relational data Data ... -
$inc
$inc Definition Behavior Example $inc Definition $inc The $inc operator increments a field by a specified value andhas the following form: { $inc : { <field1> :... -
lower
lower Description Syntax example keyword lower Description Syntax ‘INT lower (VARCHAR str)’ Convert all strings in parameters to lowercase example mysql > SELECT lower... -
lower
lower Description Syntax example keyword lower Description Syntax ‘INT lower (WARCHAR str)’ Convert all strings in parameters to lowercase example mysql > SELECT l... -
UPPER
upper description Syntax example keywords upper description Syntax VARCHAR upper(VARCHAR str) Convert all strings in parameters to uppercase. Another alias for this func...