This tutorial explains how to insert or add rows in the same table. It can be easily done with INSERT INTO statement of PROC SQL.
Create a dataset
3. Insert Rows with a Query
We can also add rows with a query. In the example below, we are appending rows to the table by extracting data from the other table.
The DATALINES statement with an INPUT statement in DATA STEP is used to read data that you enter directly in the program. In PROC SQL, you can do the same with CREATE TABLE and INSERT INTO statement.
6. Create a blank table
Related Article : How to Alter Table and Update Column
Create a dataset
data temp;
set sashelp.class;
run;
1. Insert Rows based on Column Position
With the VALUES clause and INSERT statement, we can assign values to columns by their positions. In the example below, "Sam" would be added to the first column, "M" added to the second column, "28" added to the third column and so on. Multiple VALUES clauses implies multiple rows to be added into the table.
PROC SQL;See the log shown in the image below -
INSERT INTO temp
VALUES ("Sam","M",28,75,100)
VALUES ("Sam2","M",58,55,70);
QUIT;
 |
| Log : Inserting Rows |
2. Insert Rows based on Column Name
We can also define columns and values assigned to them only. Values of all the columns that are not defined would be assigned missing.
PROC SQL;
INSERT INTO temp (name,sex)
VALUES ("Sam","M");
QUIT;
 |
| Insert Rows based on Column Name |
3. Insert Rows with a Query
We can also add rows with a query. In the example below, we are appending rows to the table by extracting data from the other table.
proc sql;4. Create Sample Data with PROC SQL
insert into newclass
select * from class
where score > 150;
quit;
The DATALINES statement with an INPUT statement in DATA STEP is used to read data that you enter directly in the program. In PROC SQL, you can do the same with CREATE TABLE and INSERT INTO statement.
proc sql;
create table list
(ID num(10), Gender char(1),Salary num,
DateOfBirth num informat=date7. format=date7.);
insert into list
values(12345,'F',42260,'21JAN01'd)
values(23456,'M',61090,'26JAN54'd);
quit;
 |
| DATALINES in PROC SQL |
5. Add Constraints in the Table
We are adding constraints that values of ID variable should be unique (Primary Key), "area" variable contain only two values - USA and India, samplesize should be greater than 0.
proc sql;Let's insert two rows
create table example
(ID num(15),
samplesize num,
area char(15) NOT NULL,
constraint prim_key primary key(ID),
constraint samplesize check(samplesize gt 0),
constraint area check(area in ('USA', 'India')));
quit;
proc sql;It returns error due to duplicate values in a variable that have a constraint of primary key.
insert into example
values(12345,42260,'India')
values(12345,61090,'USA');
quit;
 |
| Error Due to Duplicate Values |
6. Create a blank table
We can create a blank table by copying the structure of existing table
PROC SQL;
CREATE TABLE EXAMPLE2 LIKE TEMP;
QUIT;
7. See the structure of table
The DESCRIBE table is an alternative to PROC CONTENTS. It displays the structure of table - how table was created and format of variables.
PROC SQL;
DESCRIBE TABLE EXAMPLE2;
QUIT;
Related Article : How to Alter Table and Update Column