в 13:45, 26 мая 2010

2010-05-26T13:45:56Z

Admin: 1 версия

2010-05-26T10:14:36Z

1 версия

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==Insert array data to table==



<source lang="sql">

postgres=# CREATE TABLE arr(f1 int[], f2 int[]);
CREATE TABLE
postgres=#
postgres=# INSERT INTO arr VALUES (ARRAY[[1,2],[3,4]], ARRAY[[5,6],[7,8]]);
INSERT 0 1
postgres=#
postgres=# SELECT ARRAY[f1, f2, "{{9,10},{11,12}}"::int[]] FROM arr;
array
------------------------------------------------
{{{1,2},{3,4}},{{5,6},{7,8}},{{9,10},{11,12}}}
(1 row)
postgres=#
postgres=# SELECT ARRAY(SELECT oid FROM pg_proc WHERE proname LIKE "bytea%");
?column?
-----------------------------------------------------------------------
{2011,1954,1948,1952,1951,1244,1950,2005,1949,1953,2006,31,2412,2413}
(1 row)
postgres=#
postgres=# drop table arr;
DROP TABLE
postgres=#

</source>

==Insert data for two dimensional array==



<source lang="sql">

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[10000, 10000, 10000, 10000],
postgres(# ARRAY[["meeting", "lunch"], ["training", "presentation"]]);
INSERT 0 1
postgres=#
postgres=# INSERT INTO sal_emp
postgres-# VALUES ("Carol",
postgres(# ARRAY[20000, 25000, 25000, 25000],
postgres(# ARRAY[["breakfast", "consulting"], ["meeting", "lunch"]]);
INSERT 0 1
postgres=#
postgres=# -- An array slice is denoted by writing lower-bound:upper-bound for one or more array dimensions.
postgres=#
postgres=# SELECT schedule[1:2][2] FROM sal_emp WHERE name = "Bill";
schedule
-------------------------------------------
{{meeting,lunch},{training,presentation}}
(1 row)
postgres=#
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}}
(2 rows)
postgres=#
postgres=#
postgres=# drop table sal_emp;
DROP TABLE
postgres=#

</source>

==Insert data for two dimensional array column==



<source lang="sql">

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[10000, 10000, 10000, 10000],
postgres(# ARRAY[["meeting", "lunch"], ["training", "presentation"]]);
INSERT 0 1
postgres=#
postgres=# INSERT INTO sal_emp
postgres-# VALUES ("Carol",
postgres(# ARRAY[20000, 25000, 25000, 25000],
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}}
(2 rows)
postgres=#
postgres=# SELECT * FROM sal_emp WHERE 10000 = ALL (pay_by_quarter);
name | pay_by_quarter | schedule
------+---------------------------+-------------------------------------------
Bill | {10000,10000,10000,10000} | {{meeting,lunch},{training,presentation}}
(1 row)
postgres=#
postgres=# drop table sal_emp;
DROP TABLE
postgres=#
postgres=#

</source>

==Inserting array constants==



<source lang="sql">

postgres=#
postgres=# -- Inserting array constants
postgres=#
postgres=# CREATE TABLE book (id integer,titles text[]);
CREATE TABLE
postgres=#
postgres=# INSERT INTO book VALUES (102, "{"AAA\"s VVVV"}");
INSERT 0 1
postgres=#
postgres=# INSERT INTO book VALUES (103, "{"AAA", "VVVV"}");
INSERT 0 1
postgres=#
postgres=# select * from book;
id | titles
-----+----------------
102 | {"AAA"s VVVV"}
103 | {AAA,VVVV}
(2 rows)
postgres=#
postgres=# drop table book;
DROP TABLE
postgres=#
postgres=#

</source>

==Inserting values into multidimensional arrays==



<source lang="sql">

postgres=#
postgres=# -- Inserting values into multidimensional arrays
postgres=# CREATE TABLE authors (id integer,titles text[][]);
CREATE TABLE
postgres=#
postgres=# INSERT INTO authors
postgres-# VALUES (102,
postgres(# "{{"J T", "T S"},
postgres"# {"C D", "G E"},
postgres"# {"A D", "A L"}}");
INSERT 0 1
postgres=#
postgres=# select * from authors;
id | titles
-----+---------------------------------------------
102 | {{"J T","T S"},{"C D","G E"},{"A D","A L"}}
(1 row)
postgres=#
postgres=# drop table authors;
DROP TABLE
postgres=#

</source>

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PostgreSQL/Array/Array Column Insert - История изменений

в 13:45, 26 мая 2010

Admin: 1 версия