MACHSQL is a tool to dynamically execute SQL queries against Machbase server in the console, and it also allows you to check the results on the screen.
Options and Features
[mach@localhost]$ machsql -h
Table 1. MACHSQL options and description
| Short option | Long option | Description |
|---|---|---|
| -s | --server | It specifies the IP address of the server where machbased is running. (e.g. localhost) |
| -u | --user | It specifies the user ID to login machbased. (e.g. SYS) |
| -p | --password | It specifies the user's password to login machbased. (e.g. MANAGER) |
| -P | --port | It specifies the port number to access machbased. The default value is 5656, and it is set in machbase.conf file. |
| -n | --nls | It specifies the NLS. |
| -f | --script | It designates the external file name to execute. |
| -o | --output | It specifies the external file name to store the execution results. It is stored as a tab delimiter. |
| -i | --silent | It doesn't display copyright statements. |
| -v | --verbose | Run in Verbose mode. |
| -t | --testing | Run in Testing mode. |
| -r | --format | It specifies teh format of the file to be output. (e.g. csv)) |
| -h | --help | Display help message. |
Example:
machsql -s localhost -u sys -p manager machsql --server=localhost --user=sys --password=manager machsql -s localhost -u sys -p manager -f script.sql
SHOW Commands
The commands display information about index, tablespace, and other servers.
List of show options
- SHOW INDEX
- SHOW INDEXES
- SHOW INDEXGAP
- SHOW LSM
- SHOW LICENSE
- SHOW STATEMENTS
- SHOW TABLE
- SHOW TABLES
- SHOW TABLESPACE
- SHOW TABLESPACES
- SHOW USERS
SHOW INDEX
It displays the detailed information about a specified index.
Syntax:
SHOW INDEX index_name
Example:
Mach> CREATE TABLE t1 (c1 INTEGER, c2 VARCHAR(10)); Created successfully. Mach> CREATE VOLATILE TABLE t2 (c1 INTEGER, c2 VARCHAR(10)); Created successfully. Mach> CREATE INDEX t1_idx1 ON t1(c1) INDEX_TYPE LSM; Created successfully. Mach> CREATE INDEX t1_idx2 ON t1(c1) INDEX_TYPE BITMAP; Created successfully. Mach> CREATE INDEX t2_idx1 ON t2(c1) INDEX_TYPE REDBLACK; Created successfully. Mach> CREATE INDEX t2_idx2 ON t2(c2) INDEX_TYPE REDBLACK; Created successfully. Mach> SHOW INDEX t1_idx2; TABLE_NAME COLUMN_NAME INDEX_NAME ---------------------------------------------------------------------------------------------------------------------------------- INDEX_TYPE BLOOM_FILTER KEY_COMPRESS MAX_LEVEL PART_VALUE_COUNT BITMAP_ENCODE -------------------------------------------------------------------------------------------- T1 C1 T1_IDX2 LSM ENABLE COMPRESSED 2 100000 EQUAL [1] row(s) selected. Elapsed time: 0.001
SHOW INDEXES
It displays the list of all indexes.
Syntax:
SHOW INDEXES
Example:
Mach> CREATE TABLE t1 (c1 INTEGER, c2 VARCHAR(10)); Created successfully. Mach> CREATE VOLATILE TABLE t2 (c1 INTEGER, c2 VARCHAR(10)); Created successfully. Mach> CREATE INDEX t1_idx1 ON t1(c1) INDEX_TYPE LSM; Created successfully. Mach> CREATE INDEX t1_idx2 ON t1(c1) INDEX_TYPE BITMAP; Created successfully. Mach> CREATE INDEX t2_idx1 ON t2(c1) INDEX_TYPE REDBLACK; Created successfully. Mach> CREATE INDEX t2_idx2 ON t2(c2) INDEX_TYPE REDBLACK; Created successfully. Mach> SHOW INDEXES; TABLE_NAME COLUMN_NAME INDEX_NAME ---------------------------------------------------------------------------------------------------------------------------------- INDEX_TYPE --------------- T1 C1 T1_IDX1 LSM T1 C1 T1_IDX2 LSM T2 C2 T2_IDX2 REDBLACK T2 C1 T2_IDX1 REDBLACK [4] row(s) selected. Elapsed time: 0.001
SHOW INDEXGAP
It displays information about index gap.
Example:
Mach> SHOW INDEXGAP TABLE_NAME INDEX_NAME GAP ------------------------------------------------------------------------------------------------------------- INDEX_TABLE T1_IDX1 0 INDEX_TABLE T1_IDX2 0
SHOW LSM
It displays information about LSM index.
Example:
Mach> SHOW LSM; TABLE_NAME INDEX_NAME LEVEL COUNT -------------------------------------------------------------------------------------------------------------------------- T1 IDX1 0 0 T1 IDX1 1 100000 T1 IDX1 2 0 T1 IDX1 3 0 T1 IDX2 0 100000 T1 IDX2 1 0 [6] row(s) selected.
SHOW LICENSE
It displays the license information.
Example:
Mach> SHOW LICENSE INSTALL_DATE ISSUE_DATE EXPIRY_DATE TYPE POLICY --------------------------------------------------------------------------------------- 2016-07-01 10:24:37 20160325 20170325 2 0 [1] row(s) selected.
SHOW STATEMENTS
It displays SQL statements used in all sessions.
Example:
Mach> SHOW STATEMENTS USER_ID SESSION_ID QUERY -------------------------------------------------------------------------------------------------------------- 0 2 SELECT ID USER_ID, SESS_ID SESSION_ID, QUERY FROM V$STMT [1] row(s) selected.
SHOW TABLE
It displays information about table info.
Syntax:
SHOW TABLE table_name
Example:
Mach> CREATE TABLE t1 (c1 INTEGER, c2 VARCHAR(10)); Created successfully. Mach> CREATE INDEX t1_idx1 ON t1(c1) INDEX_TYPE LSM; Created successfully. Mach> CREATE INDEX t1_idx2 ON t1(c1) INDEX_TYPE BITMAP; Created successfully. Mach> SHOW TABLE T1 [ COLUMN ] ---------------------------------------------------------------- NAME TYPE LENGTH ---------------------------------------------------------------- C1 integer 11 C2 varchar 10 [ INDEX ] ---------------------------------------------------------------- NAME TYPE COLUMN ---------------------------------------------------------------- T1_IDX1 LSM C1 T1_IDX2 LSM C1
SHOW TABLES
It displays lists of a table.
Example:
Mach> SHOW TABLES NAME -------------------------------------------- BONUS DEPT EMP SALGRADE [4] row(s) selected.
SHOW TABLESPACE
It displays information about tablespace.
Example:
Mach> CREATE TABLE t1 (id integer); Created successfully. Elapsed time: 0.071 Mach> CREATE INDEX t1_idx_id ON t1(id); Created successfully. Elapsed time: 0.081 Mach> SHOW TABLESPACE SYSTEM_TABLESPACE; [TABLE] NAME TYPE ------------------------------------------------------- T1 LOG [1] row(s) selected. Elapsed time: 0.001 [INDEX] TABLE_NAME COLUMN_NAME INDEX_NAME ---------------------------------------------------------------------------------------------------------------------------------- T1 ID T1_IDX_ID [1] row(s) selected. Elapsed time: 0.000
SHOW TABLESPACES
It displays information about tablespaces.
Example:
Mach> CREATE TABLESPACE tbs1 DATADISK disk1 (DISK_PATH="tbs1_disk1"), disk2 (DISK_PATH="tbs1_disk2"), disk3 (DISK_PATH="tbs1_disk3"); Created successfully. Mach> Insert some records... ... ... Mach> SHOW TABLESPACES; NAME DISK_COUNT USAGE ----------------------------------------------------------------------------------------------------------------------- SYSTEM_TABLESPACE 1 0 TBS1 3 25824256 [2] row(s) selected.
SHOW USERS
It displays names of registered users.
Example:
Mach> CREATE USER testuser IDENTIFIED BY 'test1234'; Created successfully. Mach> SHOW USERS; USER_NAME -------------------------------------------- SYS TESTUSER [2] row(s) selected.