This file contains functions to sort objects that have dependencies among themselves.

* A given type is not guaranteed to have a corresponding array type, so we need * to use array_in() instead of casting to an array.

* This function calls all the functions needed to gather the metadata for a * single table and assembles the metadata into ColumnDef and TableDef structs * for more convenient handling in the PrintCreateTableStatement() function.

* This function constructs the names of implicit indexes created by * unique constraints on tables, so they can be filtered out of the * index list.

This function handles setup that can be done before parsing flags.

This function handles setup that must be done after parsing flags.

* This function separates out functions related to procedural languages from * any other functions, so that language-related functions can be backed up before * the languages themselves and we can avoid sorting languages and functions * together to resolve dependencies.

GenerateTableBatches batches tables to reduce network congestion and resource contention.

This function retrieves both regular views and materialized views.

Remove external/foreign tables from the data backup set.

Potentially expensive query.

This function only returns dependencies that are referenced in the backup set.

* Functions do not have default argument values in GPDB 4.3, so there is no * difference between a function's "arguments" and "identity arguments" and * we can use the same map for both fields.

* In addition to lacking the pg_get_function_* functions, GPDB 4.3 lacks * several columns in pg_proc compared to GPDB 5, so we don't retrieve those.

* The functions pg_get_function_arguments, pg_getfunction_identity_arguments, * and pg_get_function_result were introduced in GPDB 5, so we can use those * functions to retrieve arguments, identity arguments, and return values in * 5 or later but in GPDB 4.3 we must query pg_proc directly and construct * those values here.

* GetIndexes queries for all user and implicitly created indexes, since * implicitly created indexes could still have metadata to be backed up.

* Partition tables could have child partitions in schemas different * than the root partition.

Used to contruct root tables for GPDB 7+, because the root partition must be constructed by itself first.

* We convert rolvaliduntil to UTC and then append '-00' so that * we standardize times to UTC but do not lose time zone information * in the timestamp.

* Rules named "_RETURN", "pg_settings_n", and "pg_settings_u" are * built-in rules and we don't want to back them up.

Export synchronized snapshot using connection 0 and return snapshotId value as string.

Acquire AccessShareLock on a table with NOWAIT option.

This function is responsible for getting the necessary access share locks for the target relations.

* There's no built-in function to generate constraint definitions like there is for other types of * metadata, so this function constructs them.

* Operator families are not supported in GPDB 4.3, so this function * is not used in a 4.3 backup.

* This function is largely derived from the dumpSequence() function in pg_dump.c.

* This function prints CREATE TABLE statements in a format very similar to pg_dump.

A view's column names are automatically factored into it's definition.

* This function either prints a path to an executable function (for C and * internal functions) or a function definition (for functions in other languages).

* This function prints additional statements that come after the CREATE TABLE * statement for both regular and external tables.

A list of schemas we don't want to back up, formatted for use in a WHERE clause.

* A list of schemas we don't want to back up, formatted for use in a * WHERE clause.

Set synchronized snapshot for connNum to snapshotId.

It is assumed that the elements in the input slice are already escaped.

* When leafPartitionData is set, for partition tables we want to print metadata * for the parent tables and data for the leaf tables, so we split them into * separate lists.

Table backup state constants */.

Table backup state constants */.

Protocol external table is using.

Table backup state constants */.

Type of external table.

Table backup state constants */.

* Used for synchronizing DoCleanup.

* All queries in the various queries_*.go files come from one of three sources: * - Copied from pg_dump largely unmodified * - Derived from the output of a psql flag like \d+ or \df * - Constructed from scratch * In the former two cases, a reference to the query source is provided for * further reference.