1.0+ ,
1.0.0 SQL-parameter-name
1.0.0 SQL-variable-name
1.0.1  = 
1.0.2 expression
1.0.2 NULL
1.0.2 DEFAULT
1.0 (
1.0.1+ ,
1.0.1 SQL-parameter-name
1.0.1 SQL-variable-name
1.0.2 )  = 
1.0.2.1 (
1.0.2.1.1+ ,
1.0.2.1.1 expression
1.0.2.1.1 NULL
1.0.2.1.1 DEFAULT
1.0.2.1.2 )
1.0.2.1 row-fullselect
1 array-variable-name [ subindex ]  = 
1.1 expression
1.1 NULL
1 array-variable-name  = 
1.1 array-constructor
1.1 TRIM_ARRAY function

row-fullselect

1? WITH
1.1? RECURSIVE
1.2+ ,
1.2 common-table-expression
1.2.1 fullselect