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Full Discussion: delete string using AWK
Top Forums Shell Programming and Scripting delete string using AWK Post 302493226 by rocking77 on Wednesday 2nd of February 2011 07:21:24 AM
Old 02-02-2011
delete string using AWK

inputfile has 3 columns

Code:
SCHEMA.TAB1  COL1 LENGTH
SCHEMA.TAB2  COL2 LENGTH.


If i use awk on the above inputfile

awk '{print $1}' inputfile.The out put will be

Code:
SCHEMA.TAB1
SCHEMA.TAB2.

But from the above output i need to delete SCHEMA. i.e i don't want the string "SCHEMA." should display in output.Can some body help me how to code that ?
 

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CREATE 
SCHEMA(7) PostgreSQL 9.2.7 Documentation CREATE SCHEMA(7) NAME
CREATE_SCHEMA - define a new schema SYNOPSIS
CREATE SCHEMA schema_name [ AUTHORIZATION user_name ] [ schema_element [ ... ] ] CREATE SCHEMA AUTHORIZATION user_name [ schema_element [ ... ] ] DESCRIPTION
CREATE SCHEMA enters a new schema into the current database. The schema name must be distinct from the name of any existing schema in the current database. A schema is essentially a namespace: it contains named objects (tables, data types, functions, and operators) whose names can duplicate those of other objects existing in other schemas. Named objects are accessed either by "qualifying" their names with the schema name as a prefix, or by setting a search path that includes the desired schema(s). A CREATE command specifying an unqualified object name creates the object in the current schema (the one at the front of the search path, which can be determined with the function current_schema). Optionally, CREATE SCHEMA can include subcommands to create objects within the new schema. The subcommands are treated essentially the same as separate commands issued after creating the schema, except that if the AUTHORIZATION clause is used, all the created objects will be owned by that user. PARAMETERS
schema_name The name of a schema to be created. If this is omitted, the user_name is used as the schema name. The name cannot begin with pg_, as such names are reserved for system schemas. user_name The role name of the user who will own the new schema. If omitted, defaults to the user executing the command. To create a schema owned by another role, you must be a direct or indirect member of that role, or be a superuser. schema_element An SQL statement defining an object to be created within the schema. Currently, only CREATE TABLE, CREATE VIEW, CREATE INDEX, CREATE SEQUENCE, CREATE TRIGGER and GRANT are accepted as clauses within CREATE SCHEMA. Other kinds of objects may be created in separate commands after the schema is created. NOTES
To create a schema, the invoking user must have the CREATE privilege for the current database. (Of course, superusers bypass this check.) EXAMPLES
Create a schema: CREATE SCHEMA myschema; Create a schema for user joe; the schema will also be named joe: CREATE SCHEMA AUTHORIZATION joe; Create a schema and create a table and view within it: CREATE SCHEMA hollywood CREATE TABLE films (title text, release date, awards text[]) CREATE VIEW winners AS SELECT title, release FROM films WHERE awards IS NOT NULL; Notice that the individual subcommands do not end with semicolons. The following is an equivalent way of accomplishing the same result: CREATE SCHEMA hollywood; CREATE TABLE hollywood.films (title text, release date, awards text[]); CREATE VIEW hollywood.winners AS SELECT title, release FROM hollywood.films WHERE awards IS NOT NULL; COMPATIBILITY
The SQL standard allows a DEFAULT CHARACTER SET clause in CREATE SCHEMA, as well as more subcommand types than are presently accepted by PostgreSQL. The SQL standard specifies that the subcommands in CREATE SCHEMA can appear in any order. The present PostgreSQL implementation does not handle all cases of forward references in subcommands; it might sometimes be necessary to reorder the subcommands in order to avoid forward references. According to the SQL standard, the owner of a schema always owns all objects within it. PostgreSQL allows schemas to contain objects owned by users other than the schema owner. This can happen only if the schema owner grants the CREATE privilege on his schema to someone else, or a superuser chooses to create objects in it. SEE ALSO
ALTER SCHEMA (ALTER_SCHEMA(7)), DROP SCHEMA (DROP_SCHEMA(7)) PostgreSQL 9.2.7 2014-02-17 CREATE SCHEMA(7)
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