How to Handle Case Sensitivity Issues When Importing Tables into PostgreSQL?

PostgreSQL case sensitivity and case conversion

Be sure to be aware of differences in case sensitivity when importing tables from other data sources into PostgreSQL. In PostgreSQL, unquoted names are case-insensitive, while quoted names are case-sensitive. This can cause errors if you expect to access a table or view using a case-sensitive name.

To solve the problem mentioned in the question, that tables created in uppercase letters cannot be accessed without using quotes, you have two options:

1. Use quotation marks for table names:

You can enclose the table name in double quotes, which makes it case-sensitive. For example, the following query will access the table "STD_TYPE_CODES" in a case-sensitive manner:

SELECT * FROM "STD_TYPE_CODES"

2. Convert the table name to lowercase:

To make table names match PostgreSQL's default lowercase behavior, you can use the ALTER TABLE statement to rename the table to its lowercase equivalent. For example, the following statement renames the table "STD_TYPE_CODES" to "std_type_codes":

ALTER TABLE "STD_TYPE_CODES" RENAME TO "std_type_codes";

Alternatively, you can edit the dump file before importing to PostgreSQL or use specific options to convert table names to lowercase when retrieving data from the source database.

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