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84 lines
2.6 KiB
Plaintext
84 lines
2.6 KiB
Plaintext
drop table if exists t1;
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## Creating new table ##
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CREATE TABLE t1
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(
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id INT NOT NULL auto_increment,
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PRIMARY KEY (id),
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name VARCHAR(30),
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salary INT
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);
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'#--------------------FN_DYNVARS_027_01-------------------------#'
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## Setting initial session value of variable to 3 ##
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SET @@session.div_precision_increment = 3;
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## Inserting some rows in table ##
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INSERT into t1(name, salary) values('Record_1', 100011);
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INSERT into t1(name, salary) values('Record_2', 501);
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INSERT into t1(name, salary) values('Record_3', 210);
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SELECT name, salary, ((salary * 2.5)/1000) AS INCOME from t1;
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name salary INCOME
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Record_1 100011 250.0275
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Record_2 501 1.2525
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Record_3 210 0.5250
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## Verifying variable's behavior with direct division ##
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SELECT 1/7;
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1/7
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0.143
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'#--------------------FN_DYNVARS_027_02-------------------------#'
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drop table if exists t1;
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## Creating new table ##
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CREATE TABLE t1
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(
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id INT NOT NULL auto_increment,
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PRIMARY KEY (id),
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name VARCHAR(30),
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salary INT,
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income_tax FLOAT
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);
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connect test_con1, localhost, root,,;
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connection test_con1;
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## Setting global & session scope value of variable ##
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SET @@global.div_precision_increment = 2;
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SET @@session.div_precision_increment = 1;
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SELECT @@global.div_precision_increment;
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@@global.div_precision_increment
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2
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SELECT @@session.div_precision_increment;
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@@session.div_precision_increment
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1
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## Inserting some data and verifying behavior of variable ##
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INSERT into t1(name, salary, income_tax) values('Record_1', 100011, 100011*2.5/1000);
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INSERT into t1(name, salary, income_tax) values('Record_2', 501, 501*2.5/1000);
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INSERT into t1(name, salary, income_tax) values('Record_3', 210, 210*2.5/1000);
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SELECT * from t1;
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id name salary income_tax
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1 Record_1 100011 250.027
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2 Record_2 501 1.2525
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3 Record_3 210 0.525
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connect test_con2, localhost, root,,;
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connection test_con2;
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## Verifying session & global value of variable ##
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SELECT @@global.div_precision_increment = 2;
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@@global.div_precision_increment = 2
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1
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SELECT @@session.div_precision_increment = 2;
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@@session.div_precision_increment = 2
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1
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## Verifying behavior of variable by inserting some rows in table ##
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INSERT into t1(name, salary, income_tax) values('Record_4', 100011, 100011*2.5/1000);
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INSERT into t1(name, salary, income_tax) values('Record_5', 501, 501*2.5/1000);
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INSERT into t1(name, salary, income_tax) values('Record_6', 210, 210*2.5/1000);
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SELECT * from t1;
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id name salary income_tax
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1 Record_1 100011 250.027
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2 Record_2 501 1.2525
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3 Record_3 210 0.525
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4 Record_4 100011 250.027
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5 Record_5 501 1.2525
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6 Record_6 210 0.525
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## Dropping table t1 ##
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drop table t1;
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disconnect test_con1;
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disconnect test_con2;
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connection default;
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SET @@global.div_precision_increment = 4;
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