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In Oracle, the SUBSTR function is used to extract a substring from a string.
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To get the year with a fractional part from a date in Oracle, you can use the TO_CHAR function along with the format specifier 'YYYY.FF'. This format specifier allows you to display the year with the fractional part of the year in the date.For example, if you have a date column named "date_column" in a table called "example_table", you can use the following SQL query to get the year with a fractional part from the date:SELECT TO_CHAR(date_column, 'YYYY.
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To convert a date to a datetime in Oracle, you can simply cast the date as a timestamp using the TO_TIMESTAMP function. This function takes the date as an argument and converts it to a timestamp datatype. For example, if you have a date column named 'date_column' in a table named 'table_name', you can convert it to a datetime by using the following SQL query:SELECT TO_TIMESTAMP(date_column) FROM table_name;This will convert the date to a datetime format in Oracle.
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To create a regular expression for querying Oracle, you can use the REGEXP_LIKE function available in Oracle SQL. This function allows you to search for patterns within a text column using regular expressions.To use REGEXP_LIKE, you need to specify the column you want to search, the regular expression pattern you are looking for, and any additional parameters such as case sensitivity or matching options.
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To join two tables using Oracle SQL query, you can use the JOIN keyword. For example, you can use INNER JOIN to return only the rows where there is a match between the columns in both tables. You can also use LEFT JOIN or RIGHT JOIN to return all rows from one table and the matching rows from the other table. Additionally, you can use FULL JOIN to return rows when there is a match in either table.
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To get the maximum value of a sum in Oracle, you can use the MAX() function along with the SUM() function in your query. First, you would calculate the sum of the values you want to find the maximum for using the SUM() function. Then, you can use the MAX() function to return the highest value from the calculated sum. This can be done in a single query by nesting the SUM() function inside the MAX() function, or by using a subquery to first calculate the sum and then find the maximum value.
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To get a fixed-length number from a string in Oracle, you can use the REGEXP_REPLACE function along with regular expressions. First, you need to identify a pattern in the string that represents the fixed-length number you want to extract. Then, you can use a regular expression to match that pattern and replace all other characters with an empty string. This will leave you with only the fixed-length number in the string.
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To upload an XML document to Oracle from Delphi, you can use the Oracle Data Access Components (ODAC) provided by Oracle. First, establish a connection to your Oracle database using the ODAC components in your Delphi application. Then, use the XMLType data type provided by Oracle to handle XML data.You can read the XML document from a file or a string in your Delphi application and then insert it into a table in your Oracle database using SQL commands.
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To import a SQL Server Compact database into Oracle, you can use a tool or a script that can convert the database schema and data into Oracle-compatible format. One common approach is to first export the SQL Server Compact database into a readable format, such as a SQL script or a CSV file. Then, you can use Oracle's data import tools to import the data into an Oracle database.
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To update a blob column in Oracle 12c, you can use the standard SQL UPDATE statement along with the TO_BLOB or EMPTY_BLOB functions.First, you need to select the current blob value from the table using a SELECT statement. Then, you can update the blob column with a new value by using the UPDATE statement.