ANALYZE for statistics collection in PostgreSQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to update statistics for the table named 'employees'.

PostgreSQL

ANALYZE [1];

Drag options to blanks, or click blank then click option'

Aemps

Bemployee

Cemployee_data

Demployees

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong or misspelled table name.

Forgetting the semicolon at the end.

The ANALYZE command updates statistics for the specified table. Here, the correct table name is employees.

2fill in blank

medium

Complete the code to analyze all tables in the current database.

PostgreSQL

[1];

Drag options to blanks, or click blank then click option'

AANALYZE DATABASE

BANALYZE employees

CANALYZE

DANALYZE ALL

Attempts:

3 left

💡 Hint

Common Mistakes

Using ANALYZE ALL or ANALYZE DATABASE is invalid syntax.

Specifying a table name analyzes only that table.

The ANALYZE command (without a table name) updates statistics for all tables in the current database.

3fill in blank

hard

Fix the error in the code to analyze the table 'sales_data'.

PostgreSQL

ANALYZE [1];

Drag options to blanks, or click blank then click option'

Asales_data

B'sales_data'

Csales-data

Dsalesdata

Attempts:

3 left

💡 Hint

Common Mistakes

Using hyphens instead of underscores in table names.

Putting table names in single quotes.

The correct table name is sales_data. Using quotes or hyphens causes syntax errors.

4fill in blank

hard

Fill both blanks to analyze the table 'orders' with verbose output.

PostgreSQL

ANALYZE [1] [2];

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AVERBOSE

Borders

CVERBOSITY

Dorder

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'order' instead of 'orders' as table name.

Using VERBOSITY instead of VERBOSE.

The correct syntax is ANALYZE VERBOSE orders; to analyze the 'orders' table with detailed output.

5fill in blank

hard

Fill all three blanks to analyze the table 'customers' with verbose output and sample rows.

PostgreSQL

ANALYZE [1] [2] ([3]);

Drag options to blanks, or click blank then click option'

Acustomers

BVERBOSE

CSAMPLE 1000

DSAMPLE 100

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong table name.

Using SAMPLE without a number or wrong number.

Forgetting parentheses around SAMPLE argument.

The command ANALYZE VERBOSE customers (SAMPLE 1000); analyzes the 'customers' table with detailed output and uses 1000 sample rows for statistics.