An expression specifies a value.
array-element-specification. The authorization
to reference an array type. For information about authorization considerations,
see GRANT (Type Privileges).
.-operator---------------------------------. V | >>---+-----+--+-function-invocation---------+-+---------------->< +- + -+ +-(expression)----------------+ '- - -' +-constant--------------------+ +-column-name-----------------+ +-variable--------------------+ +-special-register------------+ +-scalar-fullselect-----------+ +-labeled-duration------------+ +-array-element-specification-+ +-case-expression-------------+ +-cast-specification----------+ +-OLAP-specification----------+ +-row-change-expression-------+ '-sequence-reference----------'
operator:
>>-+-CONCAT-+-------------------------------------------------->< +- ∥ ----+ +- / ----+ +- * ----+ +- ** ---+ +- + ----+ '- - ----'
>>-+-function-----+--+-YEAR---------+-------------------------->< +-(expression)-+ +-YEARS--------+ +-constant-----+ +-MONTH--------+ +-column-name--+ +-MONTHS-------+ '-variable-----' +-DAY----------+ +-DAYS---------+ +-HOUR---------+ +-HOURS--------+ +-MINUTE-------+ +-MINUTES------+ +-SECOND-------+ +-SECONDS------+ +-MICROSECOND--+ '-MICROSECONDS-'