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What is SQL?Aggregate functionsAVERAGE functionBETWEEN operatorCASE expressionCAST() functionCOALESCE() functionCommentCommon table expressionConstraintsCONVERT functionCursorData typesDate functionsDELETE statementDROP TABLE statementEXISTS operatorHAVING clauseIF statementIndexIS NOT NULL conditionIS NULL conditionJoinsLAG functionLENGTH() functionLIKE operatorMERGE statementNormalizationNot equalOperatorsORDER BY clausePartitionPivot tableRegexREPLACE functionROUND functionSELECT DISTINCT clauseSELECT statementSet operatorsStored procedureString functionsSubquerySubstringTemporary tableTransactionTriggerTRUNCATE TABLEUPDATE statementViewsWHERE clauseWindow functions