Movatterモバイル変換


[0]ホーム

URL:


Menu
×
See More 
Sign In
+1 Get Certified Upgrade Teachers Spaces Get Certified Upgrade Teachers Spaces
   ❮     
     ❯   

SQL Tutorial

SQL HOMESQL IntroSQL SyntaxSQL SelectSQL Select DistinctSQL WhereSQL Order BySQL AndSQL OrSQL NotSQL Insert IntoSQL Null ValuesSQL UpdateSQL DeleteSQL Select TopSQL Aggregate FunctionsSQL Min and MaxSQL CountSQL SumSQL AvgSQL LikeSQL WildcardsSQL InSQL BetweenSQL AliasesSQL JoinsSQL Inner JoinSQL Left JoinSQL Right JoinSQL Full JoinSQL Self JoinSQL UnionSQL Union AllSQL Group BySQL HavingSQL ExistsSQL Any, AllSQL Select IntoSQL Insert Into SelectSQL CaseSQL Null FunctionsSQL Stored ProceduresSQL CommentsSQL Operators

SQL Database

SQL Create DBSQL Drop DBSQL Backup DBSQL Create TableSQL Drop TableSQL Alter TableSQL ConstraintsSQL Not NullSQL UniqueSQL Primary KeySQL Foreign KeySQL CheckSQL DefaultSQL IndexSQL Auto IncrementSQL DatesSQL ViewsSQL InjectionSQL HostingSQL Data Types

SQL References

SQL KeywordsMySQL Functions
String Functions:ASCIICHAR_LENGTHCHARACTER_LENGTHCONCATCONCAT_WSFIELDFIND_IN_SETFORMATINSERTINSTRLCASELEFTLENGTHLOCATELOWERLPADLTRIMMIDPOSITIONREPEATREPLACEREVERSERIGHTRPADRTRIMSPACESTRCMPSUBSTRSUBSTRINGSUBSTRING_INDEXTRIMUCASEUPPERNumeric Functions:ABSACOSASINATANATAN2AVGCEILCEILINGCOSCOTCOUNTDEGREESDIVEXPFLOORGREATESTLEASTLNLOGLOG10LOG2MAXMINMODPIPOWPOWERRADIANSRANDROUNDSIGNSINSQRTSUMTANTRUNCATEDate Functions:ADDDATEADDTIMECURDATECURRENT_DATECURRENT_TIMECURRENT_TIMESTAMPCURTIMEDATEDATEDIFFDATE_ADDDATE_FORMATDATE_SUBDAYDAYNAMEDAYOFMONTHDAYOFWEEKDAYOFYEAREXTRACTFROM_DAYSHOURLAST_DAYLOCALTIMELOCALTIMESTAMPMAKEDATEMAKETIMEMICROSECONDMINUTEMONTHMONTHNAMENOWPERIOD_ADDPERIOD_DIFFQUARTERSECONDSEC_TO_TIMESTR_TO_DATESUBDATESUBTIMESYSDATETIMETIME_FORMATTIME_TO_SECTIMEDIFFTIMESTAMPTO_DAYSWEEKWEEKDAYWEEKOFYEARYEARYEARWEEKAdvanced Functions:BINBINARYCASECASTCOALESCECONNECTION_IDCONVCONVERTCURRENT_USERDATABASEIFIFNULLISNULLLAST_INSERT_IDNULLIFSESSION_USERSYSTEM_USERUSERVERSION
SQL Server FunctionsMS Access FunctionsSQL Quick Ref

SQL Examples

SQL ExamplesSQL EditorSQL QuizSQL ExercisesSQL ServerSQL SyllabusSQL Study PlanSQL BootcampSQL CertificateSQL Training

SQLOperators


SQL Arithmetic Operators

OperatorDescriptionExample
+AddTry it
-SubtractTry it
*MultiplyTry it
/DivideTry it
%ModuloTry it

SQL Bitwise Operators

OperatorDescription
&Bitwise AND
|Bitwise OR
^Bitwise exclusive OR

SQL Comparison Operators

OperatorDescriptionExample
=Equal toTry it
>Greater thanTry it
<Less thanTry it
>=Greater than or equal toTry it
<=Less than or equal toTry it
<>Not equal toTry it


SQL Compound Operators

OperatorDescription
+=Add equals
-=Subtract equals
*=Multiply equals
/=Divide equals
%=Modulo equals
&=Bitwise AND equals
^=Bitwise exclusive equals
|*=Bitwise OR equals

SQL Logical Operators

OperatorDescriptionExample
ALLTRUE if all of the subquery values meet the conditionTry it
ANDTRUE if all the conditions separated by AND is TRUETry it
ANYTRUE if any of the subquery values meet the conditionTry it
BETWEENTRUE if the operand is within the range of comparisonsTry it
EXISTSTRUE if the subquery returns one or more recordsTry it
INTRUE if the operand is equal to one of a list of expressionsTry it
LIKETRUE if the operand matches a patternTry it
NOTDisplays a record if the condition(s) is NOT TRUETry it
ORTRUE if any of the conditions separated by OR is TRUETry it
SOMETRUE if any of the subquery values meet the conditionTry it




×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
sales@w3schools.com

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
help@w3schools.com

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness
of all content. While using W3Schools, you agree to have read and accepted ourterms of use,cookies andprivacy policy.

Copyright 1999-2025 by Refsnes Data. All Rights Reserved.W3Schools is Powered by W3.CSS.


[8]ページ先頭

©2009-2025 Movatter.jp