PostgreSQL中的数组与Any-白红宇

建立表：

CREATE TABLE sal_emp (name            text,pay_by_quarter  integer[],schedule        text[][]);

插入数据：

INSERT INTO sal_emp  VALUES ('Bill',  ARRAY[10000, 11000, 9000, 13000],  ARRAY[['meeting', 'lunch'], ['training', 'presentation']]);INSERT INTO sal_emp  VALUES ('Carol',  ARRAY[20000, 25000, 25000, 25000],  ARRAY[['breakfast', 'consulting'], ['meeting', 'lunch']]);INSERT INTO sal_emp  VALUES ('Frank',  ARRAY[10000, 10000, 10000, 10000],  ARRAY[['breakfast', 'training'], ['meeting', 'lunch']]);

查看：

pgsql=# SELECT * FROM sal_emp; name  |      pay_by_quarter       |                 schedule                  -------+---------------------------+------------------------------------------- Bill  | {
   10000,11000,9000,13000}  | {
    {meeting,lunch},{training,presentation}} Carol | {
   20000,25000,25000,25000} | {
    {breakfast,consulting},{meeting,lunch}} Frank | {
   10000,10000,10000,10000} | {
    {breakfast,training},{meeting,lunch}}(3 rows)pgsql=#

用Any来查询：

pgsql=# SELECT * FROM sal_emp WHERE 10000 = ANY (pay_by_quarter); name  |      pay_by_quarter       |                 schedule                  -------+---------------------------+------------------------------------------- Bill  | {
   10000,11000,9000,13000}  | {
    {meeting,lunch},{training,presentation}} Frank | {
   10000,10000,10000,10000} | {
    {breakfast,training},{meeting,lunch}}(2 rows)pgsql=#

用ALL来查询：

pgsql=# SELECT * FROM sal_emp WHERE 10000 = ALL (pay_by_quarter); name  |      pay_by_quarter       |                schedule                -------+---------------------------+---------------------------------------- Frank | {
   10000,10000,10000,10000} | {
    {breakfast,training},{meeting,lunch}}(1 row)pgsql=#

用下标来查询：

pgsql=# SELECT * FROM sal_emp WHERE 9000 = pay_by_quarter[3]; name |      pay_by_quarter      |                 schedule                  ------+--------------------------+------------------------------------------- Bill | {
   10000,11000,9000,13000} | {
    {meeting,lunch},{training,presentation}}(1 row)pgsql=#