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Functions
Concatenate strings
Extracting substrings
lower case
Finding Substring
Formatting numbers
Replace NULL
Conditional values
Time now
Format dates

SQL関数

標準SQL関数といくつかの非標準関数。MS SQL、Oracle、MySQLとPostgreSQLで提供されているか代替がある。 代替えがある場合は可能ならここに示す。

ABSCURRENT_TIMESTAMPLENGTH+ INTERVALSUBSTRING(ansi)
AVGDATEPARTMAX+ (string)SUBSTRING
StringsDAYMINPOSITIONSUM
CASEDIVMINUTEQUARTERTAN
CASTEXTRACTMODRANKTO_CHAR(dates)
CEILFLOORMONTHREPLACETRIM
COALESCEHOURNULLIFRIGHTYEAR
CONCATIFNULLNVLROUND
COSINSTRPATINDEXSECOND
COUNTLEFT% MODULOSIN
CURRENT_DATELEN+(dates)SUBSTR
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