May 17, 2026, 11:40 PM

inbox/DataBase/PostgreSQL/object_management/index.sql

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+-- Simple create index:
+postgres=# create index tab_idx2 on scott.customer(emp_name);
+CREATE INDEX
+
+-- Create index with tablespace:
+
+postgres#CREATE INDEX tab_idx2 on scott.customer(emp_name) TABLESPACE IND_TS;
+CREATE INDEX
+
+-- Create index without causing blocking:
+
+postgres=# create index concurrently tab_idx2 on scott.customer(emp_name) TABLESPACE IND_TS;
+CREATE INDEX
+
+-- Create unique index:
+
+postgres=# create unique index tab_idx2 on scott.customer(emp_name)
+CREATE INDEX
+
+-- Create functional index:
+
+postgres=# create index fun_idx on scott.customer(lower(emp_name));
+CREATE INDEX
+
+-- Create multi column index:
+
+postgres=# create index multi_idx on scott.customer(emp_name,emp_id);
+CREATE INDEX
+
+-- drop an index:
+
+postgres=# drop index fun_idx;
+DROP INDEX