Update in a slice : Array Column Update « Array « PostgreSQL

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PostgreSQL » Array » Array Column Update 
Update in a slice


postgres=#
postgres=#
postgres=# CREATE TABLE sal_emp (
postgres(#    name            text,
postgres(#    pay_by_quarter  integer[],
postgres(#    schedule        text[][]
postgres();
CREATE TABLE
postgres=#
postgres=# INSERT INTO sal_emp
postgres-#    VALUES ('Bill',
postgres(#    ARRAY[10000100001000010000],
postgres(#    ARRAY[['meeting', 'lunch'], ['training', 'presentation']]);
INSERT 0 1
postgres=#
postgres=# INSERT INTO sal_emp
postgres-#    VALUES ('Carol',
postgres(#    ARRAY[20000250002500025000],
postgres(#    ARRAY[['breakfast', 'consulting'], ['meeting', 'lunch']]);
INSERT 0 1
postgres=#
postgres=# SELECT FROM sal_emp;
 name  |      pay_by_quarter       |                 schedule
-------+---------------------------+-------------------------------------------
 Bill  | {10000,10000,10000,10000{{meeting,lunch},{training,presentation}}
 Carol | {20000,25000,25000,25000{{breakfast,consulting},{meeting,lunch}}
(rows)

postgres=#
postgres=# -- Update in a slice:
postgres=#
postgres=# UPDATE sal_emp SET pay_by_quarter[1:2'{27000,27000}' WHERE name = 'Carol';
UPDATE 1
postgres=#
postgres=# select from sal_emp;
 name  |      pay_by_quarter       |                 schedule
-------+---------------------------+-------------------------------------------
 Bill  | {10000,10000,10000,10000{{meeting,lunch},{training,presentation}}
 Carol | {27000,27000,25000,25000{{breakfast,consulting},{meeting,lunch}}
(rows)

postgres=#
postgres=# drop table sal_emp;
DROP TABLE
postgres=#
           
       
Related examples in the same category
1.Update array value
2.An array value can be replaced completely
3.Using the ARRAY expression syntax
4.An array may also be updated at a single element
5.Modifying an array subscript
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